Ari Laaksonen

Laaksonen, Ari; Malila, Jussi; Nenes, Athanasios. 2020. Heterogeneous nucleation of water vapor on different types of black carbon particles Atmospheric chemistry and physics 20 21: 13579-13589. 2020

Welti, André; Korhonen, Kimmo; Miettinen, Pasi; Piedehierro, Ana A; Viisanen, Yrjö; Virtanen, Annele; Laaksonen, Ari. 2020. SPIN modification for low-temperature experiments Atmospheric measurement techniques 13 12: 7059-7067. 2020

Toivonen, Erika; Hippi, Marjo; Korhonen, Hannele; Laaksonen, Ari; Kangas, Markku; Pietikäinen, Joni-Pekka. 2019. The road weather model RoadSurf (v6.60b) driven by the regional climate model HCLIM38: evaluation over Finland Geoscientific model development 12 8: 3481-3501. 2019

Joutsensaari, Jorma; Ozon, Matthew; Nieminen, Tuomo; Mikkonen, Santtu; Lähivaara, Timo; Decesari, Stefano; Facchini, M Cristina; Laaksonen, Ari; Lehtinen, Kari EJ. 2018. Identification of new particle formation events with deep learning ATMOSPHERIC CHEMISTRY AND PHYSICS 18 13: 9597-9615. 2018

Nieminen, Tuomo; Kerminen, Veli-Matti; Petäjä, Tuukka; Aalto, Pasi P; Arshinov, Mikhail; Asmi, Eija; Baltensperger, Urs; Beddows, David C S; Beukes, Johan Paul; Collins, Don; Ding, Aijun; Harrison, Roy M; Henzing, Bas; Hooda, Rakesh; Hu, Min; Horrak, Urmas; Kivekäs, Niku; Komsaare, Kaupo; Krejci, Radovan; Kristensson, Adam; et al. [Incl. Laaksonen, Ari; Virtanen Annele]. 2018. Global analysis of continental boundary layer new particle formation based on long-term measurements ATMOSPHERIC CHEMISTRY AND PHYSICS 18 19: 14737-14756. 2018

Baranizadeh Elham, Nieminen Tuomo, Yli-Juuti Taina, Kulmala Markku, Petaja Tuukka, Leskinen Ari, Komppula Mika, Laaksonen Ari, Lehtinen Kari EJ. 2017. Estimation of atmospheric particle formation rates through an analytical formula: validation and application in Hyytiälä and Puijo, Finland. ATMOSPHERIC CHEMISTRY AND PHYSICS 17 21: 13361-13371. 2017

Gregow H, Laaksonen A, Alper ME. 2017. Increasing large scale windstorm damage in Western, Central and Northern European forests, 1951-2010. Scientific Reports 7: 46397. 2017

Kortelainen A, Hao L, Tiitta P, Jaatinen A, Miettinen P, Kulmala M, Smith JN, Laaksonen A, Worsnop DR, Virtanen A. 2017. Sources of particulate organic nitrates in the boreal forest in Finland. BOREAL ENVIRONMENT RESEARCH 22: 13-26. 2017

Ovadnevaite Jurgita, Zuend Andreas, Laaksonen Ari, Sanchez Kevin J, Roberts Greg, Ceburnis Darius, Decesari Stefano, Rinaldi Matteo, Hodas Natasha, Facchini Maria Cristina, Seinfeld John H, O'Dowd Colin. 2017. Surface tension prevails over solute effect in organic-influenced cloud droplet activation. Nature 546: 637-641. 2017

Laaksonen A, Malila J. 2016. An adsorption theory of heterogeneous nucleation of water vapour on nanoparticles. ATMOSPHERIC CHEMISTRY AND PHYSICS 16: 135-143. 2016

Yli-Pirilä Pasi, Copolovici Lucian, Kännaste Astrid, Noe Steffen, Blande James D, Mikkonen Santtu, Klemola Tero, Pulkkinen Juha, Virtanen Annele, Laaksonen Ari, Joutsensaari Jorma, Niinemets Ülo, Holopainen Jarmo K. 2016. Herbivory by an outbreaking moth increases emissions of biogenic volatiles and leads to enhanced secondary organic aerosol formation capacity. ENVIRONMENTAL SCIENCE & TECHNOLOGY 50 21: 11501-11510. 2016

Tröstl Jasmin, Chuang Wayne K, Gordon Hamish, Heinritzi Martin, Yan Chao, Molteni Ugo, Ahlm Lars, Frege Carla, Bianchi Federico, Wagner Robert, Simon Mario, Lehtipalo Katrianne, Williamson Christina, Craven Jill S, Duplissy Jonathan, Adamov Alexey, Almeida Joao, Bernhammer Anne-Kathrin, Breitenlechner Martin, Brilke Sophia et al.. 2016. The role of low-volatility organic compounds in initial particle growth in the atmosphere. Nature 533 7604: 527-531. 2016

Lehtipalo Katrianne, Rondo Linda, Kontkanen Jenni, Schobesberger Siegfried, Jokinen Tuija, Sarnela Nina, Kürten Andreas, Ehrhart Sebastian, Franchin Alessandro, Nieminen Tuomo, Riccobono Francesco, Sipilä Mikko, Yli-Juuti Taina, Duplissy Jonathan, Adamov Alexey, Ahlm Lars, Almeida Joäo, Amorim Antonio, Bianchi Federico, Breitenlechner Martin et al. 2016. The effect of acid-base clustering and ions on the growth of atmospheric nano-particles. Nature Communications 7: 11594. 2016

Laaksonen A, Malila J, Nenes A, Hung HM, Chen, JP. 2016. Surface fractal dimension, water adsorption efficiency, and cloud nucleation activity of insoluble aerosol. Scientific Reports 6: 25504. 2016

Kiendler-Scharr A, Mensah AA, Friese E, Topping D, Nemitz E, Prevot ASH, Äijälä M, Allan J, Canonaco F, Canagaratna M, Carbone S, Crippa M, Dall Osto M, Day DA, De Carlo P, Di Marco CF, Elbern H, Eriksson A, Freney E, Hao L et al. 2016. Ubiquity of organic nitrates from nighttime chemistry in the European submicron aerosol. GEOPHYSICAL RESEARCH LETTERS [epub ahead of print 20 July2016]: 1-10. 2016

Kontkanen Jenni, Järvinen Emma, Manninen Hanna E., Lehtipalo Katrianne, Kangasluoma Juha, Decesari Stefano, Gobbi Gian Paolo, Laaksonen Ari, Petäjä Tuukka, Kulmala Markku. 2016. High concentrations of sub-3nm clusters and frequent new particle formation observed in the Po Valley, Italy, during the PEGASOS 2012 campaign. ATMOSPHERIC CHEMISTRY AND PHYSICS 16: 1919-1935. 2016

Kirkby Jasper, Duplissy Jonathan, Sengupta Kamalika, Frege Carla, Gordon Hamish, Williamson Christina, Heinritzi Martin, Simon Mario, Yan Chao, Almeida Joäo, Tröstl Jasmin, Nieminen Tuomo, Ortega Ismael K, Wagner Robert, Adamov Alexey, Amorim Antonio, Bernhammer Anne-Kathrin, Bianchi Federico, Breitenlechner Martin, Brilke Sophia et al. 2016. Ion-induced nucleation of pure biogenic particles. NATURE (LONDON) 533 7604: 521-526. 2016

Kim J, Ahlm L , Yli-Juuti T, Lawler M, Keskinen H, Tröestl J, Schobesberger S, Duplissy J, Amorim A, Bianchi F, Donahue NM, Flagan RC, Hakala J, Heinritzi M, Jokinen T, Kuerten A, Laaksonen A, Lehtipalo K, Miettinen P, Petäjä T et al. 2016. Hygroscopicity of nanoparticles produced from homogeneous nucleation in the CLOUD experiments. ATMOSPHERIC CHEMISTRY AND PHYSICS 16: 293-304. 2016

Gordon Hamish, Sengupta Kamalika, Rap Alexandru, Duplissy Jonathan, Frege Carla, Williamson Christina, Heinritzi Martin, Simon Mario, Yan Chao, Almeida João, Tröstl Jasmin, Nieminen Tuomo, Ortega Ismael K, Wagner Robert, Dunne Eimear M, Adamov Alexey, Amorim Antonio, Bernhammer Anne-Kathrin, Bianchi Federico, Breitenlechner Martin et al. 2016. Reduced anthropogenic aerosol radiative forcing caused by biogenic new particle formation. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 113 43: 12053-12058. 2016

Baranizadeh Elham, Murphy Benjamin N, Julin Jan, Falahat Saeed, Reddington Carly L, Arola Antti, Ahlm Lars, Mikkonen Santtu, Fountoukis Christos, Patoulias David, Minikin Andreas, Hamburger Thomas, Laaksonen Ari, Pandis Spyros N, Vehkamäki Hanna, Lehtinen Kari EJ, Riipinen Ilona. 2016. Implementation of state-of-the-art ternary new-particle formation scheme to the regional chemical transport model PMCAMx-UF in Europe. Geoscientific Model Development 9: 2741-2754. 2016

Ahlm L, Yli-Juuti T, Schobesberger S, Praplan AP, Kim J, Tikkanen O-P, Lawler MJ, Smith JN, Tröstl J, Acosta Navarro JC, Baltensperger U, Bianchi F, Donahue NM, Duplissy J, Franchin A, Jokinen T, Keskinen H, Kirkby J, Kürten A, Laaksonen A et al. 2016. Modeling the thermodynamics and kinetics of sulfuric acid-dimethylamine-water nanoparticle growth in the CLOUD chamber. AEROSOL SCIENCE AND TECHNOLOGY 50 10: 1017-1032. 2016

Malila Jussi, McGraw Robert, Laaksonen Ari, Lehtinen Kari E J. 2015. Communication: Kinetics of scavenging of small, nucleating clusters: First nucleation theorem and sum rules. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 142 1: 011102. 2015

Schobesberger S, Franchin A, Bianchi F, Rondo L, Duplissy J, Kürten A, Ortega IK, Metzger A, Schnitzhofer R, Almeida J, Amorim A, Dommen J, Dunne EM, Ehn M, Gagné S, Ickes L, Junninen H, Hansel A, Kerminen V-M, Kirkby J et al. 2015. On the composition of ammonia-sulfuric-acid ion clusters during aerosol particle formation. ATMOSPHERIC CHEMISTRY AND PHYSICS 15 1: 55-78. 2015

Pietikäinen J-P, Kupiainen K, Klimont Z, Makkonen R, Korhonen H, Karinkanta R, Hyvärinen A-P, Karvosenoja N, Laaksonen A, Lihavainen H, Kerminen V-M. 2015. Impacts of emission reductions on aerosol radiative effects. ATMOSPHERIC CHEMISTRY AND PHYSICS 15 10: 5501-5519. 2015

Pajunoja Aki, Lambe Andrew T, Hakala Jani, Rastak Narges, Cummings Molly J, Brogan James F, Hao Liqing, Paramonov Mikhail, Hong Juan, Prisle Nonne L, Malila Jussi, Romakkaniemi Sami, Lehtinen Kari EJ, Laaksonen Ari, Kulmala Markku, Massoli Paola, Onasch Timothy B, Donahue Neil M, Riipinen Ilona, Davidovits Paul et al. 2015. Adsorptive uptake of water by semisolid secondary organic aerosols. GEOPHYSICAL RESEARCH LETTERS 42 8: 3063-3068. 2015

Dalirian M, Keskinen H, Ahlm L, Ylisirniö A, Romakkaniemi S, Laaksonen A, Virtanen A, Riipinen I. 2015. CCN activation of fumed silica aerosols mixed with soluble pollutants. ATMOSPHERIC CHEMISTRY AND PHYSICS 15 7: 3815-3829. 2015

Laaksonen Ari. 2015. A unifying model for adsorption and nucleation of vapors on solid surfaces. JOURNAL OF PHYSICAL CHEMISTRY. A 119 16: 3736-3745. 2015

Joutsensaari J, Yli-Pirilä P, Korhonen H, Arola A, Blande JD, Heijari J, Kivimäenpää M, Mikkonen S, Hao L, Miettinen P, Lyytikäinen-Saarenmaa, Faiola CL, Laaksonen A, Holopainen JK. 2015. Biotic stress accelerates formation of climate-relevant aerosols in boreal forests. ATMOSPHERIC CHEMISTRY AND PHYSICS 15: 12139-12157. 2015

Gao Yao, Weiher Stefan, Markkanen Tiina, Pietikäinen Joni-Pekka, Gregow Hilppa, Henttonen Helena M, Jacob Daniela, Laaksonen Ari. 2015. Implementation of the CORINE land use classification in the regional climate model REMO. BOREAL ENVIRONMENT RESEARCH 20 2: 261-282. 2015

Bergman T, Laaksonen A, Korhonen H, Malila J, Dunne EM, Mielonen T, Lehtinen KEJ, Kühn T, Arola A, Kokkola H. 2015. Geographical and diurnal features of amine-enhanced boundary layer nucleation. Journal of Geophysical Research: Atmospheres 120 18: 9606-9624. 2015

Kortelainen Aki, Joutsensaari Jorma, Hao Liqing, Leskinen Jani, Tiitta Petri, Jaatinen Antti, Miettinen Pasi, Sippula Olli, Torvela Tiina, Tissari Jarkko, Jokiniemi Jorma, Worsnop Douglas R., Smith James N., Laaksonen Ari, Virtanen Annele. 2015. Real-Time Chemical Composition Analysis of Particulate Emissions from Woodchip Combustion. ENERGY & FUELS 29 2: 1143-1150. 2015

Portin Harri, Leskinen Ari, Hao Liqing, Kortelainen Aki, Miettinen Pasi, Jaatinen Antti, Laaksonen Ari, Lehtinen Kari E J, Romakkaniemi Sami, Komppula Mika. 2014. The effect of local sources on particle size and chemical composition and their role in aerosol-cloud interactions at Puijo measurement station. ATMOSPHERIC CHEMISTRY AND PHYSICS 14: 6021-6034. 2014

Luomaranta Anna, Ruosteenoja Kimmo, Jylha Kirsti, Gregow Hilppa, Haapala Jari, Laaksonen Ari. 2014. Multimodel estimates of the changes in the Baltic Sea ice cover during the present century. TELLUS SERIES A - DYNAMIC METEOROLOGY AND OCEANOGRAPHY 66: 22617. 2014

Mikkonen Santtu, Laine Marko, Mäkelä Hanna M, Gregow Hilppa, Tuomenvirta Heikki, Lahtinen Matti, and Laaksonen Ari. 2014. Increasing trend in the average temperature in Finland, 1847-2012: European Geosciences Union, Geophysical Research Abstracts.EUROPEAN GEOSCIENCES UNION. Geophysical Research Abstracts 16. -. 2014

Mikkonen Santtu, Laine Marko, Mäkelä Hanna M, Gregow Hilppa, Tuomenvirta Heikki, Lahtinen Matti, Laaksonen Ari. 2014. Trends in the average temperature in Finland, 1847-2013. Stochastic Environmental Research and Risk Assessment 29 6: 1521-1529. 2014

Pietikäinen Joni-Pekka, Mikkonen Santtu, Hamed Amar, Hienola Anca I, Birmili Wolfram, Kulmala Markku, and Laaksonen Ari. 2014. Analysis of nucleation events in the European boundary layer using the regional aerosol-climate model REMO-HAM with a solar radiation-driven OH-proxy. ATMOSPHERIC CHEMISTRY AND PHYSICS 14: 11711-11729. 2014

Romakkaniemi Sami, Jaatinen Antti, Laaksonen Ari, Nenes Athanasios, Raatikainen Tomi. 2014. Ammonium nitrate evaporation and nitric acid condensation in DMT CCN counters. Atmospheric Measurement Techniques 7: 1377-1384. 2014

Raatikainen Tomi, Laaksonen Ari. 2014. Comment on "Changes in Droplet Surface Tension Affect the Observed Hygroscopicity of Photochemically Aged Biomass Burning Aerosol". ENVIRONMENTAL SCIENCE & TECHNOLOGY 48: 2082-2083. 2014

Riccobono Francesco, Schobesberger Siegfried, Scott Catherine E, Dommen Josef, Ortega Ismael K, Rondo Linda, Almeida João, Amorim Antonio, Bianchi Federico, Breitenlechner Martin, David André, Downard Andrew, Dunne Eimear M, Duplissy Jonathan, Ehrhart Sebastian, Flagan Richard C, Franchin Alessandro, Hansel Armin, Junninen Heikki, Kajos Maija, Keskinen Helmi et al. 2014. Oxidation Products of Biogenic Emissions Contribute to Nucleation of Atmospheric Particles. SCIENCE 344 6185: 717-721. 2014

Räisänen P, Luomaranta A, Järvinen H, Takala M, Jylhä K, Bulygina O N, Luojus K, Riihelä A, Laaksonen Ari, Koskinen J, Pulliainen J. 2014. Evaluation of North Eurasian snow-off dates in the ECHAM5.4 atmospheric general circulation model. Geoscientific Model Development 7: 3037-3057. 2014

Stocker Markus, Baranizadeh Elham, Portin Harri, Komppula Mika, Rönkkö Mauno, Hamed Amar, Virtanen Annele, Lehtinen Kari, Laaksonen Ari, Kolehmainen Mikko. 2014. Representing situational knowledge acquired from sensor data for atmospheric phenomena. ENVIRONMENTAL MODELLING & SOFTWARE 58: 27-47. 2014

Tiitta P, Vakkari V, Croteau P, Beukes JP, van Zyl PG, Josipovic M, Venter AD, Jaars K, Pienaar JJ, Ng NL, Canagaratna MR, Jayne JT, Kerminen V-M, KokkolaH, Kulmala M, Laaksonen A, Worsnop DR, Laakso L. 2014. Chemical composition, main sources and temporal variability of PM 1 aerosols in southern African grassland ATMOSPHERIC CHEMISTRY AND PHYSICS 14: 1909-1927. 2014

Kühn Thomas, Partanen Antti-Ilari, Laakso Anton, Lu Zifeng, Bergman Tommi, Mikkonen Santtu, Kokkola Harri, Korhonen Hannele, Räisänen Petri, Streets David G, Romakkaniemi Sami, and Laaksonen Ari. 2014. Have tropospheric aerosol emissions contributed to the recent climate hiatus?: European Geosciences Union, Geophysical Research Abstracts.EUROPEAN GEOSCIENCES UNION. Geophysical Research Abstracts 16. -. 2014

Kürten Andreas, Jokinen Tuija, Simon Mario, Sipilä Mikko, Sarnela Nina, Junninen Heikki, Adamov Alexey, Almeida João, Amorim Antonio, Bianchi Federico, Breitenlechner Martin, Dommen Josef, Donahue Neil M, Duplissy Jonathan, Ehrhart Sebastian, Flagan Richard C, Franchin Alessandro, Hakala Jani, Hansel Armin, Heinritzi Martin, et al.. 2014. Neutral molecular cluster formation of sulfuric acid-dimethylamine observed in real time under atmospheric conditions. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 111: 15019-15024. 2014

Keskinen Helmi, Kortelainen Aki-Matti, Jaatinen Antti, Yli-Pirilä Pasi, Joutsensaari Jorma, Romakkaniemi Sami, Hao Liqing, Torvela Tiina, Miettinen Pasi, Virtanen Annele, Worsnop Douglas R, Laaksonen Ari, Smith James N. 2014. Increased hygroscopicity of Arizona Test Dust seeds by secondary organic aerosol coating from Increased hygroscopicity of Arizona Test Dust seeds by secondary organic alfa-pinene ozonolysis. BOREAL ENVIRONMENT RESEARCH 19 suppl. B: 182-190. 2014

Kühn Thomas, Partanen Antti-Ilari, Laakso Anton, Lu Z, Bergman Tommi, Mikkonen Santtu, Kokkola Harri, Korhonen Hannele, Räisänen Petri, Streets D G, Romakkaniemi Sami, Laaksonen Ari. 2014. Climate impacts of changing aerosol emissions since 1996. GEOPHYSICAL RESEARCH LETTERS 41: 4711-4718. 2014

Henriksson Svante V, Pietikäinen Joni-Pekka, Hyvärinen Antti-Pekka, Räisänen Petri, Kupiainen K, Tonttila Juha, Hooda R, Lihavainen Heikki, O'Donnell Declan, Backman L, Klimont Z, Laaksonen Ari. 2014. Spatial distributions and seasonal cycles of aerosol climate effects in India seen in a global climate-aerosol model. ATMOSPHERIC CHEMISTRY AND PHYSICS 14: 10177-10192. 2014

Kulmala Markku, Lappalainen Hanna K, Bäck Jaana, Laaksonen Ari, Nikinmaa E, Riekkola M-L, Vesala Timo, Viisanen Yrjö, Aalto T, Boy M, Dal Maso Miikka, Ehn Mikael, Hakola Hannele, Hari P, Hartonen K, Hämeri Kaarle, Hölttä T, Junninen Heikki, Järvi Leena, Kurten Theo, et al.. 2014. Finnish Centre of Excellence in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change: summary and outlook. BOREAL ENVIRONMENT RESEARCH 19 suppl. B: 2-19. 2014

Bialek J, Dall Osto M, Vaattovaara Petri, Decesari S, Ovadnevaite J, Laaksonen Ari, O'Dowd Colin. 2014. Hygroscopic and chemical characterisation of Po Valley aerosol. ATMOSPHERIC CHEMISTRY AND PHYSICS 14: 1557-1570. 2014

Bianchi Federico, Praplan Arnaud P, Sarnela Nina, Dommen Josef, Kürten Andreas, Ortega Ismael K, Schobesberger Siegfried, Junninen Heikki, Simon Mario, Tröstl Jasmin, Jokinen Tuija, Sipilä Mikko, Adamov Alexey, Amorim Antonio, Almeida Joao, Breitenlechner Martin, Duplissy Jonathan, Ehrhart Sebastian, Flagan Richard C, et al.. 2014. Insight into Acid-Base Nucleation Experiments by Comparison of the Chemical Composition of Positive, Negative, and Neutral Clusters. ENVIRONMENTAL SCIENCE & TECHNOLOGY 48 23: 13675-13684. 2014

Gao Y, Markkanen T, Backman L, Henttonen H M, Pietikäinen Joni-Pekka, Mäkelä Hanna M, Laaksonen Ari. 2014. Biogeophysical impacts of peatland forestation on regional climate changes in Finland. BIOGEOSCIENCES 11: 7251-7267. 2014

Hao Liqing, Kortelainen Aki, Romakkaniemi Sami, Portin Harri, Jaatinen Antti, Leskinen Ari, Komppula Mika, Miettinen Pasi, Sueper Donna, Pajunoja Aki, Smith James N, Lehtinen Kari E J, Worsnop Douglas R, Laaksonen Ari, Virtanen Annele. 2014. Atmospheric submicron aerosol composition and particulate organic nitrate formation in a boreal forestland-urban mixed region. ATMOSPHERIC CHEMISTRY AND PHYSICS 14: 13483-13495. 2014

Crippa M, Canonaco F, Lanz V A, Äijälä M, Allan J D, Carbone S, Capes G, Ceburnis D, Dall'Osto M, Day D A, DeCarlo P F, Ehn M, Eriksson A, Freney E, Hildebrandt Ruiz L, Hillamo R, Jimenez J L, Junninen H, Kiendler-Scharr A, Kortelainen Aki-Matti, et. al.. 2014. Organic aerosol components derived from 25 AMS data sets across Europe using a consistent ME-2 based source apportionment approach. ATMOSPHERIC CHEMISTRY AND PHYSICS 14: 6159-6176. 2014

Henriksson Svante V, Räisänen Petri, Silen J, Järvinen Heikki, Laaksonen Ari. 2014. Improved power-law estimates from multiple samples provided by millennium climate simulations. Theoretical and Applied Climatology 119 3-4: 667-677. 2014

Hirsikko Anne, O'Connor E J, Komppula Mika, Korhonen Kimmo, Pfüller Anne, Giannakaki Eleni, Wood C R, Bauer-Pfundstein M, Poikonen A, Karppinen T, Lonka H, Kurri M, Heinonen J, Moisseev D, Asmi Eija, Aaltonen V, Nordbo Annika, Rodriguez E, Lihavainen Heikki, Laaksonen Ari, Lehtinen Kari E J, Laurila T, Petäjä Tuukka, Kulmala Markku, Viisanen Yrjö. 2014. Observing wind, aerosol particles, cloud and precipitation: Finland's new ground-based remote-sensing network. Atmospheric Measurement Techniques 7: 1351-1375. 2014

Hodas Natasha, Sullivan Amy P, Skog Kate, Keutsch Frank N, Collett Jeffrey L Jr, Decesari Stefano, Facchini M Cristina, Carlton Annmarie G, Laaksonen Ari, Turpin Barbara J. 2014. Aerosol Liquid Water Driven by Anthropogenic Nitrate: Implications for Lifetimes of Water-Soluble Organic Gases and Potential for Secondary Organic Aerosol Formation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 48 19: 11127-11136. 2014

Jaatinen Antti, Romakkaniemi Sami, Anttila Tatu, Hyvärinen Antti-Pekka, Hao Liqing, Kortelainen Aki, Miettinen Pasi, Mikkonen Santtu, Smith James N, Virtanen Annele, Laaksonen Ari. 2014. The third Pallas Cloud Experiment: Consistency between the aerosol hygroscopic growth and CCN activity. BOREAL ENVIRONMENT RESEARCH 19 suppl. B: 368-382. 2014

Baranizadeh Elham, Arola Antti, Hamed Amar, Nieminen Tuomo, Mikkonen Santtu, Virtanen Annele, Kulmala Markku, Lehtinen Kari, Laaksonen Ari. 2014. The effect of cloudiness on new-particle formation: investigation of radiation levels. BOREAL ENVIRONMENT RESEARCH 19 suppl. B: 343-354. 2014

Korhola Tapani, Kokkola Harri, Korhonen Hannele, Partanen Antti-Ilari, Laaksonen Ari, Lehtinen Kari E J, Romakkaniemi Sami. 2014. Reallocation in modal aerosol models: impacts on predicting aerosol radiative effects. Geoscientific Model Development 7: 161-174. 2014

L. Q. Hao, S. Romakkaniemi, A. Kortelainen, A. Jaatinen, H. Portin, P. Miettinen, M. Komppula, A. Leskinen, A. Virtanen, J.N. Smith, D. Sueper,D.R. Worsnop, K.E.J. Lehtinen and A. Laaksonen. 2013. Aerosol Chemical Composition in Cloud Events by High Resolution Time-of-Flight Aerosol Mass Spectrometry. ENVIRONMENTAL SCIENCE & TECHNOLOGY 47: 2645-2653. 2013

Westervelt D M, Pierce J R, Riipinen Ilona, Trivitayanurak W, Hamed Amar, Kulmala Markku, Laaksonen Ari, Decesari S, Adams P J. 2013. Formation and growth of nucleated particles into cloud condensation nuclei: model-measurement comparison. ATMOSPHERIC CHEMISTRY AND PHYSICS 13: 7645-7663. 2013

Stocker Markus, Baranizadeh Elham, Hamed Amar, Rönkkö Mauno, Virtanen Annele, Laaksonen Ari, Portin Harri, Komppula Mika, Kolehmainen Mikko. 2013. Acquisition and Representation of Knowledge for Atmospheric New Particle Formation: Hřebíček Jiří, Schimak Gerald, Kubásek Miroslav, Rizzoli Andrea E., Environmental Software Systems. Fostering Information Sharing. IFIP Advances in Information and Communication Technology 413. 98-108. 2013

Schobesberger Siegfried, Junninen Heikki, Bianchi Federico, Lönn Gustaf, Ehn Mikael, Lehtipalo Katrianne, Dommen Josef, Ehrhart Sebastian, Ortega Ismael K, Franchin Alessandro, Nieminen Tuomo, Riccobono Francesco, Hutterli Manuel, Duplissy Jonathan, Almeida João, Amorim Antonio, Breitenlechner Martin, Downard Andrew J, Dunne Eimear M, Flagan Richard C, et al.. 2013. Molecular understanding of atmospheric particle formation from sulfuric acid and large oxidized organic molecules. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 110 43: 17223-17228. 2013

Paasonen Pauli, Asmi Ari, Petäjä Tuukka, Kajos Maija K, Äijälä Mikko, Junninen Heikki, Holst Thomas, Abbatt Jonathan P D, Arneth Almut, Birmili Wolfram, van der Gon Hugo Denier, Hamed Amar, Hoffer András, Laakso Lauri, Laaksonen Ari, Leaitch W Richard, Plass-Dülmer Christian, Pryor Sara C, Räisänen Petri, Swietlicki Erik, Wiedensohler Alfred, Worsnop Douglas R, Kerminen Veli-Matti, Kulmala Markku. 2013. Warming-induced increase in aerosol number concentration likely to moderate climate change. NATURE GEOSCIENCE 6: 438-442. 2013

Malila Jussi, McGraw R, Laaksonen Ari, Lehtinen Kari EJ. 2013. Repairing the first nucleation theorem: Precritical cluster losses: DeMott, Paul J and O'Dowd, Colin D, NUCLEATION AND ATMOSPHERIC AEROSOLS: 19th International Conference.American Institute of Physics. AIP conference proceedings 1527. 31-34. 2013

Lindfors Anders V, Kouremeti N, Arola Antti, Kazadzis S, Bais A F, Laaksonen, Ari. 2013. Effective aerosol optical depth from pyranometer measurements of surface solar radiation (global radiation) at Thessaloniki, Greece. ATMOSPHERIC CHEMISTRY AND PHYSICS 13: 3733-3741. 2013

Laaksonen Ari. 2013. A combined theory of heterogeneous nucleation and adsorption of vapors on solid surfaces: DeMott, Paul J and O'Dowd, Colin D, NUCLEATION AND ATMOSPHERIC AEROSOLS: 19th International Conference.American Institute of Physics. AIP conference proceedings 1527. 270-273. 2013

Keskinen Helmi, Virtanen Annele, Joutsensaari Jorma, Tsagkogeorgas G, Duplissy J, Schobesberger S, Gysel M, Riccobono F, Slowik JG, Bianchi F, Yli-Juuti T, Lehtipalo K, Rondo L, Breitenlechner M, Kupc A, Almeida J, Amorim A, Dunne EM, Downard A, Ehrhart S, et al.. 2013. Evolution of nanoparticle composition in CLOUD in presence of sulphuric acid, ammonia and organics: DeMott, Paul J and O'Dowd, Colin D, NUCLEATION AND ATMOSPHERIC AEROSOLS: 19th International Conference.American Institute of Physics. AIP conference proceedings 1527. 291-294. 2013

Kulmala Markku, Kontkanen Jenni, Junninen Heikki, Lehtipalo Katrianne, Manninen Hanna E, Nieminen Tuomo, Petäjä Tuukka, Sipilä Mikko, Schobesberger Siegfried, Rantala Pekka, Franchin Alessandro, Jokinen Tuija, Järvinen Emma, Äijälä Mikko, Kangasluoma Juha, Hakala Jani, Aalto Pasi P, Paasonen Pauli, Mikkilä Jyri, Vanhanen Joonas, et. al.. 2013. Direct Observations of Atmospheric Aerosol Nucleation. SCIENCE 22: 943-946. 2013

Keskinen Helmi, Virtanen Annele, Joutsensaari Jorma, Tsagkogeorgas G, Duplissy J, Schobesberger S, Gysel M, Riccobono F, Slowik J G, Bianchi F, Yli-Juuti Taina, Lehtipalo Katrianne, Rondo L, Breitenlechner M, Kupc A, Almeida J, Amorim A, Dunne E M, Downard A J, Ehrhart S, Franchin A, et. al.. 2013. Evolution of particle composition in CLOUD nucleation experiments. ATMOSPHERIC CHEMISTRY AND PHYSICS 13: 5587-5600. 2013

Kannosto Jonna, Yli-Pirilä Pasi, Hao Liqing, Leskinen Jani, Jokiniemi Jorma, Mäkelä Jyrki, Joutsensaari Jorma, Laaksonen Ari, Worsnop Douglas R, Keskinen Jorma, Virtanen Annele. 2013. Bounce characteristics of α-pinene derived SOA particles with implications to physical phase. BOREAL ENVIRONMENT RESEARCH 18: 329-340. 2013

Hyvärinen A-P, Al-Jeelani H, Alghamdi M, Hussein T, Khodeir M, Lihavainen H, Kulmala Markku, Laaksonen Ari. 2013. Particle size distribution measurements at Hada Al Sham, western Saudi Arabia: DeMott, Paul J and O'Dowd, Colin D, NUCLEATION AND ATMOSPHERIC AEROSOLS: 19th International Conference.American Institute of Physics. AIP conference proceedings 1527. 602-605. 2013

Hienola Anca I, Pietikäinen Joni-Pekka, Jacob D, Pozdun R, Petäjä Tuukka, Hyvärinen, Antti-Pekka, Sogacheva Larisa, Kerminen Veli-Matti, Kulmala Markku, Laaksonen, Ari. 2013. Black carbon concentration and deposition estimations in Finland by the regional aerosol-climate model REMO-HAM. ATMOSPHERIC CHEMISTRY AND PHYSICS 13: 4033-4055. 2013

Almeida João, Schobesberger Siegfried, Kürten Andreas, Ortega Ismael K, Kupiainen-Määttä Oona, PraplanArnaud P, Adamov Alexey, Amorim Antonio, Bianchi Federico, Breitenlechner Martin, David André, Dommen Josef, Donahue Neil M, Downard Andrew, Dunne Eimear, Duplissy Jonathan, Ehrhart Sebastian, Flagan Richard C, Franchin Alessandro, Guida Roberto, et. al.. 2013. Molecular understanding of sulphuric acid-amine particle nucleation in the atmosphere. NATURE (LONDON) 502: 359-363. 2013

Ahmad Irshad, Mielonen Tero, Grosvenor Daniel P, Portin Harri J, Arola Antti, Mikkonen Santtu, Kühn Thomas, Leskinen Ari, Joutsensaari Jorma, Komppula Mika, Lehtinen Kari EJ, Laaksonen Ari, Romakkaniemi Sami. 2013. Long-term measurements of cloud droplet concentrations and aerosol-cloud interactions in continental boundary layer clouds. TELLUS. SER B. CHEMICAL AND PHYSICAL METEOROLOGY 65: 20138. 2013

Korhola Tapani, Kokkola Harri, Korhonen Hannele, Partanen Antti-Ilari, Laaksonen Ari, Romakkaniemi Sami. 2013. Effects of modal and sectional aerosol representations on aerosol activation and light extinction: DeMott, Paul J and O'Dowd, Colin D, NUCLEATION AND ATMOSPHERIC AEROSOLS: 19th International Conference.American Institute of Physics. AIP conference proceedings 1527. 655-658. 2013

Pietikäinen Joni-Pekka,. Mikkonen Santtu, Laaksonen Ari. 2012. Nucleation studies with regional aerosol-climate model REMO-HAM. Teoksessa: (toim.), Proceedings of the European Aerosol Conference 2012, Granada, Spain, 2.9. - 7.9.2012. ss. 157. 2012

Petäjä Tuukka, Laakso L, Grönholm T, Launiainen S, Evele-Peltoniemi I, Virkkula A, Leskinen Ari, Backman J, Manninen H E, Sipila M, Haapanala S, Hameri K, Vanhala E, Tuomi T, Paatero J, Aurela M, Hakola H, Makkonen U, Hellen H, Hillamo R, et al.. 2012. In-situ observations of Eyjafjallajökull ash particles by hot-air balloon ATMOSPHERIC ENVIRONMENT 48: 104-112. 2012

Pietikäinen Joni-Pekka, O'Donnell D, Teichmann C, Karstens U, Pfeifer S, Kazil J, Podzun R, Fiedler S, Kokkola Harri, Birmili Wolfram, O'Dowd Colin, Baltensperger U, Weingartner E, Gehrig R, Spindler G, Kulmala Markku, Feichter J, Jacob D, Laaksonen Ari. 2012. The regional aerosol-climate model REMO-HAM. Geoscientific Model Development 5: 1323-1339. 2012

Mikkonen Santtu, Portin Harri, Komppula Mika, Laaksonen Ari, Romakkaniemi Sami. 2012. Reducing measurement error of Cloud Droplet Probe with a statistical smoother. Teoksessa: (toim.), Proceedings of the European Aerosol Conference 2012, Granada, Spain, 2.9. - 7.9.2012. ss. 326. 2012

Portin Harri, Mielonen Tero, Leskinen Ari, Arola Antti, Pärjälä E, Romakkaniemi Sami, Laaksonen Ari, Lehtinen Kari E J, Komppula Mika. 2012. Biomass burning aerosols observed in Eastern Finland during the Russian wildfires in summer 2010 - Part 1: In-situ aerosol characterization. ATMOSPHERIC ENVIRONMENT 47: 269-278. 2012

Prisle NL, Asmi, Ari, Topping D, Partanen Antti-Ilari, Romakkaniemi Sami, Dal Maso Miikka, Kulmala Markku, Laaksonen Ari, Lehtinen Kari EJ, McFiggans G, Kokkola H. 2012. Surfactant effects in global simulations of cloud droplet activation. GEOPHYSICAL RESEARCH LETTERS 39: -. 2012

Romakkaniemi Sami, Arola Antti, Kokkola Harri, Birmili W, Tuch T, Kerminen Veli-Matti, Räisänen P, Smith James H, Korhonen Hannele, Laaksonen Ari. 2012. Effect of aerosol size distribution changes on AOD, CCN and cloud droplet concentration: Case studies from Erfurt and Melpitz, Germany. JOURNAL OF GEOPHYSICAL RESEARCH 117: D07202. 2012

Saukko Erkka, Lambe A T, Massoli P, Koop T, Wright J P, Croasdale D R, Pedernera D A, Onasch T B, Laaksonen Ari, Davidovits P, Worsnop Douglas R, Virtanen Annele. 2012. Humidity-dependent phase state of SOA particles from biogenic and anthropogenic precursors ATMOSPHERIC CHEMISTRY AND PHYSICS 12: 7517-7529. 2012

P. Vaattovaara, Z.D. Ristovski, M. Graus, M. Müller, L. Di Liberto, S. Sjögren, M. Karl, D. Orsini, C. Leck, A. Laaksonen. 2012. Radiatively Active Particles Formed on the Ice Melting Arctic Ocean. Teoksessa: (toim.), The abstracts of International Polar Year 2012 conference, Montreal, Canada, 22.4.-27.4.2012. ss. 1. 2012

Paasonen P, Olenius T, Kupiainen O, KurténT, Petäjä T, Birmili W, Hamed A, Hu M, Huey LG, Plass-Duelmer C, Smith JN, Wiedensohler A, Loukonen V, McGrath MJ, Ortega IK, Laaksonen A, Vehkamäki H, Kerminen V-M, Kulmala M. 2012. On the formation of sulphuric acid - amine clusters in varying atmospheric conditions and its influence on atmospheric new particle formation. ATMOSPHERIC CHEMISTRY AND PHYSICS 12: 9113-9133. 2012

Mikkonen Santtu, Portin Harri, Komppula Mika, Laaksonen Ari, Romakkaniemi Sami. 2012. Detecting random error in the cloud droplet probe measurement time series. Teoksessa: Markku Kulmala, Hanna K. Lappalainen, Michael Boy, Magdalena Brus and Tuomo Nieminen (toim.), Proceedings of Finnish Center of Excellence in 'Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change', and Nordic Center of Excellence in 'Cryosphere-Atmosphere Interactions in a Changing Arctic Climate' Annual Meetings 2012. Report Series in Aerosol Science 134. ss. 479-480. 2012

Laakso Anton, Partanen Antti-Ilari, Kokkola Harri, Laaksonen Ari, Lehtinen Kari EJ and Korhonen Hannele. 2012. Stratospheric passenger flights are likely an inefficient geoengineering strategy. Environmental Research Letters 7: 034021. 2012

Finessi E, Decesari S, Paglione M, Giulianelli L, Carbone C, Gilardoni S, Fuzzi S, Saarikoski S, Raatikainen Tomi, Hillamo R, Allan J, Mentel Th F, Tiitta Petri, Laaksonen Ari, Petäjä Tuukka, Kulmala Markku, Worsnop D R, Facchini M C. 2012. Determination of the biogenic secondary organic aerosol fraction in the boreal forest by NMR spectroscopy ATMOSPHERIC CHEMISTRY AND PHYSICS 12: 941-959. 2012

Henriksson Svante V, Räisänen Petri, Silén J, Laaksonen Ari. 2012. Quasiperiodic climate variability with a period of 50-80 years: Fourier analysis of measurements and Earth System Model simulations. Climate Dynamics 2012: 1999-2011. 2012

Kulmala Markku, Petäjä Tuukka, Nieminen Tuomo, Sipilä Mikko, Manninen Hanna E, Lehtipalo Katrianne, Dal Maso Miikka, Aalto Pasi P, Junninen Heikki, Paasonen Pauli, Riipinen Ilona, Lehtinen Kari E J, Laaksonen Ari, Kerminen Veli-Matti. 2012. Measurement of the nucleation of atmospheric aerosol particles NATURE PROTOCOLS 7: 1651-1667. 2012

Meronen H, Henriksson Svante V, Räisänen Petri, Laaksonen Ari. 2012. Climate effects of northern hemisphere volcanic eruptions in an Earth System Model ATMOSPHERIC RESEARCH 114-115: 107-118. 2012

Laaksonen, A, Romakkaniemi, S., Joutsensaari, J,, Hamed, A., Malila, J, Ahmad, I., Baranizadeh, E., Hao, L, Jaatinen, A, Keskinen, H., Korhola, T., Kortelainen, A., Kuhn, T., Maalick, Z., Miettinen, P, Mikkonen, S., Pajuoja, A, Smith, J.N., Vaattovaara, P, Yli-Pirilä, P., Virtanen, A.. 2012. Overview of the studies conducted by the UEF aerosol physics group. Report Series in Aerosol Series 134: 383-385. 2012

Laaksonen, A., S. Romakkaniemi, J. Joutsensaari, A. Hamed, J. Malila, I. Ahmad, E. Baranizadeh, L. Hao, A. Jaatinen, H. Keskinen, T. Korhola, A. Kortelainen, T. Kuhn, Z. Maalick, P. Miettinen, S. Mikkonen, A. Pajuoja, J.N. Smith, P. Vaattovaara, P. Yli-Pirilä, A. Virtanen. 2012. Overview of the studies conducted by the UEF aerosol physics group. Proceedings of Finnish Center of Excellence in 'Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change', and Nordic Center of Excellence in 'Cryosphere-Atmosphere Interactions in a Changing Arctic Climate' Annual Meetings 2012, Editors: Markku Kul. REPORT SERIES IN AEROSOL SCIENCE 134: 83-92. 2012

Leskinen Ari, Arola Antti, Komppula Mika, Portin Harri, Tiitta Petri, Miettinen Pasi, Romakkaniemi Sami, Laaksonen Ari, Lehtinen Kari EJ. 2012. Seasonal cycle and source analyses of aerosol optical properties in a semi-urban environment at Puijo station in Eastern Finland. ATMOSPHERIC CHEMISTRY AND PHYSICS 12: 5647-5659. 2012

Amar Hamed, Mika Komppula, Harri Portin, Ari Leskinen, Sami Romakkaniemi, Kari Lehtinen, James Smith, Jorma Joutsensaari and Ari Laaksonen:. 2012. Cloud Condensation Nucleus Production from Nucleation Events at a Semi-Rural Environment: Puijo station, Eastern Finland. Teoksessa: (toim.), CCN Production from Nucleation Events at Puijo station, Eastern Finland. ss. 1. 2012

Makkonen Risto, Romakkaniemi Sami, Kokkola Harri, Stier P, Räisänen P, Rast S, Feichter J, Kulmala Markku, Laaksonen, Ari. 2012. Brightening of the global cloud field by nitric acid and the associated radiative forcing ATMOSPHERIC CHEMISTRY AND PHYSICS 12: 7625-7633,. 2012

Mikkonen Santtu, Korhonen H,annele Romakkaniemi Sami, Smith James, Joutsensaari Jorma, Lehtinen Kari EJ, Hamed Amar, Breider TJ, Birmili W, Spindler G, Plass-Duelmer C, Facchini MC & Laaksonen Ari. 2011. Meteorological and trace gas factors affecting the number concentration of atmospheric Aitken (Dp = 50 nm) particles in the continental boundary layer: parameterization using a multivariate mixed effects model. Geoscientific Model Development 4: 1-13. 2011

Z. Ristovski, L. Cravigan, P. Vaattovaara, N. Talbot, G. Olivares, C. Law, M. Harvey, and A. Laaksonen. 2011. Sea spray aerosol production via bubble bursting during the Surface Ocean Aerosol Production (SOAP) study. Teoksessa: (toim.), The abstracts of European Aerosol Conference, Manchester, England, 4.9-9.9.2011. ss. 1. 2011

Virtanen Annele, Kannosto Jonna, Kuuluvainen H, Arffman A, Joutsensaari Jorma, Saukko E, Hao L, Yli-Pirilä Pasi, Tiitta Petri, Holopainen JK, Keskinen J, Worsnop DR, Smith JN, Laaksonen Ari. 2011. Bounce behavior of freshly nucleated biogenic secondary organic aerosol particles. ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 8759-8766. 2011

Vakkari Ville, Laakso H, Kulmala Markku, Laaksonen Ari, Mabaso D, Molefe M, Kgabi N & Laakso Lauri. 2011. New particle formation events in semi-clean South African savannah. ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 3333-3346,. 2011

Vaattovaara, J. Zabori, T. Gustafsson, A. Laaksonen, R. Krejci, D. Nilssson. 2011. Ice melting arctic ocean and climate: bubble burst particles. REPORT SERIES IN AEROSOL SCIENCE 128: 184-185. 2011

Raatikainen Tomi & Laaksonen Ari. 2011. A simplified treatment of surfactant effects on cloud drop activation. Geoscientific Model Development 4: 107-116. 2011

P.Vaattovaara, L.Cravigan, N.Talbot, G.Olivares, C.Law, M.Harvey, Z.Ristovski, A.Laaksonen. 2011. Biogenic organic ultrafine marine particles during SOAP. Teoksessa: (toim.), Abstracts of NOSA 2011 Nordic Aerosol Symposium, Tampere, Finland, 9.-11.11.2011. ss. 1-2. 2011

P. Vaattovaara, L. Cravigan, N. Talbot, G. Olivares, C. Law, M. Harvey, Z. Ristovski, A. Laaksonen.. 2011. Surface Southern Pacific Ocean SOA. REPORT SERIES IN AEROSOL SCIENCE 126: 389-391. 2011

P. Vaattovaara, L. Cravigan, N. Talbot, G. Olivares, C. Law, M. Harvey, Z. Ristovski, A. Laaksonen.. 2011. Secondary organic aerosol on southern Pacific Ocean. Teoksessa: (toim.), The abstracts of European Aerosol Conference, Manchester, England, 4.9-9.9.2011. ss. 1. 2011

Mikkonen Santtu, Romakkaniemi Sami, Smith James N, Korhonen Hannele, Petäjä Tuukka, Plass-Duelmer Christian, Boy Michael, McMurry Peter H, Lehtinen Kari EJ, Joutsensaari Jorma, Hamed Amar, Mauldin Lee R, Birmili Wolfram, Arnold Frank, Kulmala Markku, Laaksonen Ari. 2011. Statistical proxy for sulphuric acid concentration: Markku Kulmala, Jaana Bäck, Hanna K. Lappalainen and Tuomo Nieminen, Proceedings of the Finnish Center of Excellence and Graduate School in 'Physics, Chemistry, Biology and Meteorology ofAtmospheric Composition and Climate Change' Annual Workshop 18.¿20.5.2011. Report Series in Aerosol Science 126. 261-264. 2011

Mikkonen Santtu, Romakkaniemi Sami, Smith James N, Korhonen Hannele, Petäjä Tuukka, Plass-Duelmer Christian, Boy Michael, McMurry Peter H, Lehtinen Kari EJ, Joutsensaari Jorma, Hamed Amar, Mauldin III RL, Birmili Wolfram, Spindler Gerald, Arnold Frank, Kulmala Markku, Laaksonen Ari. 2011. A statistical proxy for sulphuric acid concentration ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 11319-11334. 2011

Kulmala Markku, Asmi Ari, Lappalainen H K, Baltensperger U, Brenguier J-L, Facchini M C, Hansson H-C, Hov Ø, O'Dowd C D, Pöschl U, Wiedensohler A, Boers R, Boucher O, de Leeuw G, Denier van der Gon H A C, Feichter J, Krejci R, Laj P, Lihavainen H, Lohmann U, et al.. 2011. European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) ¿ integrating aerosol research from nano to global scales ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 13061-13143. 2011

M. Kulmala, et al., Laaksonen, A., Lehtinen, K.E.J., A. Vaattovaara, P. et al.. 2011. General overview: European Integrated projects on aerosol cloud climate and air quality interactions (EUCAARI) ¿ Integrating aerosols research from nano to global scales. REPORT SERIES IN AEROSOL SCIENCE 126: 192-198. 2011

Hamed Amar, Korhonen Hannele, Sihto Sanna-Liisa, Joutsensaari Jorma, Järvinen Heikki, Petäjä Tuukka, Arnold Frank, Nieminen Tuomo, Kulmala Markku, Smith James, Lehtinen Kari EJ & Laaksonen Ari. 2011. The role of relative humidity in continental new particle formation. JOURNAL OF GEOPHYSICAL RESEARCH 116: D03202, 12 PP. 2011

A. Laaksonen, A. Hamed, M. Kulmala, W. Birmili, F. Arnold, C. Plaß-Dülmer. 2011. Representation of new particle formation in large scale models: Selection criteria for activation and kinetic coefficients.: AMAR HAMED, NUCLEATION MECHNANICS. 1. 2011

A. Laaksonen, A. Hamed, M. Kulmala, W. Birmili, F. Arnold, C. Plaß-Dülmer. 2011. Representation of new particle formation in large scale models: Selection criteria for activation and kinetic coefficients: EAC 2011, Representation of new particle formation in large scale models: Selection criteria for activation and kinetic coefficients. 1. 2011

Hamed A, Portin H, Leskinen M, Komppula M, Lehtinen KEJ, Romakkaniemi S, Smith JN, Joutsensaari J, Laaksonen A. 2011. Characterization of New Particle Formation Events in Kuopio, Finland Based on a three-year analysis, New Particle Formation. 482. 2011

Cerully K M, Raatikainen Tomi, Lance S, Tkacik D, Tiitta Petri, Petäjä Tuukka, Ehn M, Kulmala Markku, Worsnop D R, Laaksonen Ari, Smith James N, Nenes A. 2011. Aerosol hygroscopicity and CCN activation kinetics in a boreal forest environment during the 2007 EUCAARI campaign ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 12369-12386. 2011

Hao Liqing, Romakkaniemi Sami, Yli-Pirilä Pasi, Joutsensaari Jorma, Kortelainen Aki, Kroll JH, Miettinen, Pasi, Vaattovaara Petri, Tiitta, Petri, Jaatinen Antti, Kajos MK, Holopainen JK, Heijari J, Rinne J, Kulmala Markku, Worsnop DR, Smith James & Laaksonen Ari. 2011. Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions. ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 1367-1378. 2011

Henriksson SV, Laaksonen Ari, Kerminen V-M, Räisänen P, Järvinen H, Sundström A-M & de Leeuw G. 2011. Spatial distributions and seasonal cycles of aerosols in India and China seen in global climate-aerosol model ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 7975-7990. 2011

Hildebrandt L, Kostenidou E, Lanz V A, Prevot A S H, Baltensperger U, Mihalopoulos N, Laaksonen Ari, Donahue N M, Pandis S N. 2011. Sources and atmospheric processing of organic aerosol in the Mediterranean: insights from aerosol mass spectrometer factor analysis ATMOSPHERIC CHEMISTRY AND PHYSICS 11: 12499-12515. 2011

Keskinen Helmi, Romakkaniemi Sami, Jaatinen Antti, Miettinen Pasi, Saukko Erkka, Joutsensaari Jorma, Mäkelä Jyrki M., Virtanen Annele, Smith James N. & Laaksonen Ari. 2011. On-Line Characterization of Morphology and Water Adsorption on Fumed Silica Nanoparticles. AEROSOL SCIENCE AND TECHNOLOGY 45 12: 1441-1447. 2011

Kirkby Jasper, Curtius Joachim, Almeida João, Dunne Eimear, Duplissy Jonathan, Ehrhart Sebastian, Franchin Alessandro, Gagné Stéphanie, Ickes Luisa, Kürten Andreas, Kupc Agnieszka, Metzger Axel, Riccobono Francesco, Rondo Linda, Schobesberger Siegfried, Tsagkogeorgas Georgios, Wimmer Daniela, Amorim Antonio, Bianchi Federico, Breitenlechner Martin, et. al.. 2011. Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation NATURE (LONDON) 476: 429¿433. 2011

P. Vaattovaara, Z.D. Ristovski, M. Graus, M. Müller, E. Asmi, L. Di Liberto, S. Sjögren, D. Orsini, C. Leck, A. Laaksonen. 2010. Ultrafine particle observation on the open water arctic ocean close to ice edge: secondary organic contribution. REPORT SERIES IN AEROSOL SCIENCE 102: 78. 2010

Virtanen A, Joutsensaari J, Koop T, Kannosto J, Yli-Pirilä P, Leskinen J, Mäkelä JM, Holopainen JK, Pöschl U, Kulmala M, Worsnop DR & Laaksonen A. 2010. An amorphous solid state of biogenic secondary organic aerosol particles. NATURE (LONDON) 467: 824-827. 2010

Vaattovaara Petri, Ristovski Zoran, Graus Martin, Muller Marcus, Hansel Armin, di Liberto Luca, Karl Matthias, Asmi Eija, Sjögren Staffan, Orsini Douglas, Leck Caroline, Laaksonen, Ari. 2010. Biogenic SOA formed on biologically active Arctic Ocean close to ice edge. Teoksessa: (toim.), The abstracts of International Aerosol Conference, 28.8-3.9.2010, Helsinki, Finland. ss. 1. 2010

Tiitta P, Miettinen P, Vaattovaara P, Joutsensaari J, Petäjä T, Virtanen A, Raatikainen T, Aalto P, Portin H, Romakkaniemi S, Kokkola H, Lehtinen KEJ, Kulmala M & Laaksonen A. 2010. Roadside aerosol study using hygroscopic, organic and volatility TDMAs: Characterization and mixing state. ATMOSPHERIC ENVIRONMENT 44 7: 976-986. 2010

Spracklen DV, Carslaw KS, Merikanto J, Mann GW, Reddington CL, Pickering S, Ogren JA, Andrews E, Baltensperger U, Weingartner E, Boy M, Kulmala M, Laakso L, Lihavainen H, Kivekäs N, Komppula M, Mihalopoulos N, Kouvarakis G, Jennings SG, O'Dowd C, Birmili W, Wiedensohler A, Weller R, Gras J, Laj P, Sellegri K, Bonn B, Krejci R, Laaksonen A, Hamed A, Minikin A, Harrison RM, Talbot R & Sun J. 2010. Explaining global surface aerosol number concentrations in terms of primary emissions and particle formation. ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 4775-4793. 2010

Raatikainen T, Vaattovaara P, Tiitta P, Miettinen P, Rautiainen J, Ehn M, Kulmala M, Laaksonen A & Worsnop DR. 2010. Physicochemical properties and origin of organic groups detected in boreal forest using an aerosol mass spectrometer. ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 2063-2077. 2010

Petri Vaattovaara, Tuukka Petäjä, Jorma Joutsensaari, Pasi Miettinen, Boris Zaprudin, Aki Kortelainen, Juha Heijari, Pasi Yli-Pirilä, Pasi Aalto, Doug R.Worsnop, Ari Laaksonen. 2010. The Effect of Pollution on Newly-formed Particle Composition in Boreal Forest, Geophysical Research Abstracts, Vol. 12, EGU2010-9467, 2010, EGU General Assembly 2010, Vienna, Austria. 1. 2010

Paasonen P, Nieminen T, Asmi E, Manninen HE, Petäjä T, Plass-Dülmer C, Flentje H, Birmili W, Wiedensohler A, Hõrrak U, Metzger A, Hamed A, Laaksonen A, Facchini MC, Kerminen VM & Kulmala M. 2010. On the roles of sulphuric acid and low-volatility organic vapours in the initial steps of atmospheric new particle formation. ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 11223-11242. 2010

Prisle NL, Raatikainen T, Laaksonen A & Bilde M. 2010. Surfactants in cloud droplet activation: mixed organic-inorganic particles. ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 5663-5683. 2010

P. Vaattovaara, Z. Ristovski, M. Graus, M. Müller, S. Sjögren, D. Orsini, C. Leck, A. Laaksonen. 2010. The role of BVOC for secondary particles formed on Arctic Ocean. Teoksessa: (toim.), The abstracts of Nordic-Baltic BACCI BVOC workshop, Tartu, Estonia, 11-13.10.2010. ss. 1. 2010

Henriksson SV, Arjas E, Laine M, Tamminen J & Laaksonen A. 2010. Comment on "Using multiple observationally-based constraints to estimate climate sensitivity" by J. D. Annan and J. C. Hargreaves, Geophys. Res. Lett., 2006. Climate of the Past 6: 411-414. 2010

Duplissy J, Enghoff MB, Aplin KL, Arnold F, Aufmhoff H, Avngaard M, Baltensperger U, Bondo T, Bingham R, Carslaw K, Curtius J, David A, Fastrup B, Gagné S, Hahn F, Harrison RG, Kellett B, Kirkby J, Kulmala M, Laakso L, Laaksonen A, Lillestol E, Lockwood M, Mäkelä J, Makhmutov V, Marsh ND, Nieminen T, Onnela A, Pedersen E, Pedersen JOP, Polny J, Reichl U, Seinfeld JH, Sipilä M, Stozhkov Y, Stratman. 2010. Results from the CERN pilot CLOUD experiment. ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 1635-1647. 2010

Hamed A, Birmili W, Joutsensaari J, Mikkonen S, Asmi A, Wehner B, Spindler G, Jaatinen A, Wiedensohler A, Korhonen H, Lehtinen, KEJ, & Laaksonen A. 2010. Changes in the production rate of secondary aerosol particles in Central Europe in view of decreasing SO2 emissions between 1996 and 2006. ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 1071-1091. 2010

Mikkonen Santtu, Korhonen Hannele, Romakkaniemi Sami, Smith James N, Joutsensaari Jorma, Lehtinen Kari EJ, Hamed Amar, Breider Tom J, Birmili Wolfram, Spindler Gerald, Plass-Duelmer Christian, Facchini Maria Christina, Laaksonen Ari. 2010. Meteorological and trace gas factors affecting the number concentration of atmospheric aitken (dp = 50 nm) particles in the continental boundary layer: parameterization using a multivariate mixed effects model.. Teoksessa: Markku Kulmala, Hanna K. Lappalainen, Ari Asmi and Tuomo Nieminen (toim.), Proceedings of 2010 EUCAARI Annual Meeting, Helsinki 22.11-26.11.2010. Report Series in Aerosol Science 120. ss. 211-215. 2010

Kerminen VM, Petäjä T, Manninen HE, Paasonen P, Nieminen T, Sipilä M, Junninen H, Ehn M, Gagné S, Laakso L, Riipinen I, Vehkamäki H, Kurten T, Ortega IK, Dal Maso M, Brus D, Hyvärinen A, Lihavainen H, Leppä J, Lehtinen KEJ, Mirme A, Mirme S, Hõrrak U, Berndt T, Stratmann F, Birmili W, Wiedensohler A, Metzger A, Dommen J, Baltensperger U, Kiendler-ScharrA, Mentel TF, Wildt J, Winkler PM, Wagner PE,. 2010. Atmospheric nucleation: highlights of the EUCAARI project and future directions. ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 10829-10848. 2010

Manninen HE, Nieminen T, Asmi E, Gagné S, Häkkinen S, Lehtipalo K, Aalto P, Vana M, Mirme A, Mirme S, Hõrrak U, Plass-Dülmer C, Stange G, Kiss G, Hoffer A, Törő N, Moerman M, Henzing B, de Leeuw G, Brinkenberg M, Kouvarakis GN, Bougiatioti A, Mihalopoulos N, O'Dowd C, Ceburnis D, Arneth A, Svenningsson B, Swietlicki E, Tarozzi L, Decesari S, Facchini MC, Birmili W, Sonntag A, Wiedensohler A, . 2010. EUCAARI ion spectrometer measurements at 12 European sites ¿ analysis of new particle formation events ATMOSPHERIC CHEMISTRY AND PHYSICS 10: 7907-7927. 2010

Massoli P, Lambe AT, Ahern AT, Williams LR, Ehn M, Mikkilä J, Canagaratna MR, Brune WH, Onasch TB, Jayne JT, Petäjä T, Kulmala M, Laaksonen A, Kolb CE, Davidovits P & Worsnop DR. 2010. Relationship between aerosol oxidation level and hygroscopic properties of laboratory generated secondary organic aerosol (SOA) particles Relationship between aerosol oxidation level and hygroscopic properties of laboratory generated secondary organic aerosol (SOA) particles. GEOPHYSICAL RESEARCH LETTERS 37: L24801. 2010

Lohila A, Minkkinen K, Laine J, Savolainen I, Tuovinen JP, Korhonen L, Laurila T, Tietäväinen H & Laaksonen A. 2010. Forestation of boreal peatlands: Impacts of changing albedo and greenhouse gas fluxes on radiative forcing JOURNAL OF GEOPHYSICAL RESEARCH 115: G04011. 2010

Romakkaniemi S, Laaksonen A, Stevens B. 2009. Effect of droplet number concentration on the radiative fog: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 376-378. 2009

Mikkonen S, Lehtinen KEJ, Romakkaniemi S, Joutsensaari J, Hamed A, Laaksonen A. 2009. Statistical analysis of factors affecting to the number concentration of atmospheric aerosols in two polluted areas: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 303-306. 2009

Portin HJ, Komppula M, Leskinen A, Romakkaniemi S, Laaksonen A, Lehtinen K E J. 2009. Aerosol-cloud interactions at Puijo semi-urban measurement station: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 352-355. 2009

Portin HJ, Komppula M, Leskinen A, Romakkaniemi S, Laaksonen A, Lehtinen KEJ. 2009. Observations of aerosol-cloud interactions at Puijo semi-urban measurement station. Teoksessa: (toim.), Nucleation and Atmospheric Aerosols 18th International Conference.ICPF ASCR, v.v.i. and CAS. ss. 383-386. 2009

Portin HJ, Komppula M, Leskinen AP, Romakkaniemi S, Laaksonen A, Lehtinen KEJ. 2009. Observations of aerosol-cloud interactions at the Puijo semi-urban measurement station. BOREAL ENVIRONMENT RESEARCH 14: 641-653. 2009

Raatikainen T, Vaattovaara P, Tiitta P, Miettinen P, Rautiainen J, Ehn M, Kulmala M, Laaksonen A, Worsnop DR. 2009. Aerosol composition and properties of the organic fraction in Hyytiälä, Finland, Nucleation and Atmospheric Aerosols 18th International Conference. 98-101. 2009

Sorjamaa R, Romakkaniemi S, Laaksonen A. 2009. Case studies on satellite based and in situ measured cloud microphysical properties. Teoksessa: Kulmala M, Bäck J, Nieminen T, Lauri A (toim.), Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. ss. 401-403. 2009

Romakkaniemi S, Laaksonen A, Stevens B. 2009. Large eddy simulations of radiative fog, Nucleation and Atmospheric Aerosols 18th International Conference.ICPF ASCR, v.v.i. and CAS. 990-993. 2009

Tiitta P, Miettinen P, Vaattovaara P, Joutsensaari J, Petäjä T, Virtanen A, Aalto P, Portin H, Lehtinen KEJ, Kulmala M, Laaksonen A. 2009. Roadside ufp study using hygroscopic, organic and volatility tdmas: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 410-414. 2009

Tiitta P, Petäjä T, Miettinen P, Vaattovaara P, Joutsensaari J, Virtanen A, Aalto P, Portin H, Lehtinen KEJ, Kulmala M, Laaksonen A. 2009. Roadside aerosol study using hygroscopic, organic and volatility TDMAs, Nucleation and Atmospheric Aerosols 18th International Conference. 849-852. 2009

Malila J, Napari I, Laaksonen A. 2009. Densities of critical nuclei from measurements of the pressure dependence of nucleation rate: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 272-274. 2009

Vaattovaara P, Ristovski ZD, Graus M, Müller M, Asmi E, Di Liberto L, Sjögren S, Orsini D, Leck C, Laaksonen A. 2009. Ultrafine particle observation on the open water arctic ocean close to ice edge: secondary organic contribution. Teoksessa: Kulmala M, Bäck J, Nieminen T, Lauri A (toim.), Proceedings of the Finnish Center of Excellence and Graduate School in "Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change". Annual Workshop. Report Series in Aerosol Science. ss. 433-438. 2009

Vaattovaara P, Ristovski ZD, Graus M, Müller M, Sjögren S, Orsini D, Leck C, Laaksonen A. 2009. Secondary organic contribution to particles formed on the ice melted Arctic ocean, Nucleation and Atmospheric Aerosols 18th International Conference.ICPF ASCR, v.v.i. and CAS. 394-397. 2009

Vaattovaara P, Petäjä T, Joutsensaari J, Miettinen P, Zaprudin B, Kortelainen A, Heijari J, Yli-Pirilä P, Aalto P, Worsnop DR, Laaksonen A. 2009. The evolution of nucleation- and Aitken-mode particle compositions in a boreal forest environment during clean and pollution-affected new-particle formation events. BOREAL ENVIRONMENT RESEARCH 14: 662-682. 2009

Miettinen P, Laaksonen A. 2009. Size resolved aerosol particle flux measurements: sampling methods and quality monitoring: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 295-297. 2009

Malila J, Laaksonen A, Napari I. 2009. Densities of critical clusters from nucleation experiments, Nucleation and Atmospheric Aerosols 18th International Conference.ICPF ASCR, v.v.i. and CAS. 619-622. 2009

Jaatinen A, Hamed A, Joutsensaari J, Mikkonen S, Birmili W, Wehner B, Spindler G, Wiedensohler A, Decesari S, Mircea M, Facchini MC, Junninen H, Kulmala M, Lehtinen KEJ, Laaksonen A. 2009. A comparison of new particle formation events in the boundary layer at three different sites in Europe. BOREAL ENVIRONMENT RESEARCH 14: 481-498. 2009

Anttila T, Vaattovaara P, Komppula M, Hyvärinen A-P, Lihavainen H, Kerminen V-M, Laaksonen A. 2009. Size-dependent activation of aerosols into cloud droplets at a subarctic background site during the second Pallas Cloud Experiment (2nd PaCE): method development and data evaluation. ATMOSPHERIC CHEMISTRY AND PHYSICS 9: 4841-4854. 2009

Makkonen R, Asmi A, Korhonen H, Kokkola H, Järvenoja S, Räisänen P, Lehtinen KEJ, Laaksonen A, Kerminen V-M, Järvinen H, Lohmann U, Bennartz R, Feichter J, Kulmala M. 2009. Sensitivity of aerosol concentrations and cloud properties to nucleation and secondary organic distripution in ECHAM5-HAM global circulation model. ATMOSPHERIC CHEMISTRY AND PHYSICS 9: 1747-1766. 2009

Hamed A, Joutsensaari J, Mikkonen S, Wehner B, Birmili W, Tuch T, Spindler G, Wiedensohler A, Decesari S, Mircea M, Fuzzi S, Facchini MC, Laaksonen A. 2009. Nucleation events in a polluted continental boundary layers as a source of CCN. Teoksessa: Kulmala M, Bäck J, Nieminen T, Lauri A (toim.), Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. ss. 121-124. 2009

Hamed A, Korhonen H, Sihto S-L, Joutsensaari J, Järvinen H, Lehtinen K, Kulmala M, Laaksonen A. 2009. Increased coagulation scavenging does not explain suppression of nucleation events at high relative humidities?. Teoksessa: (toim.), Nucleation and Atmospheric Aerosols 18th International Conference.ICPF ASCR, v.v.i. and CAS. ss. 464-467. 2009

Hao LQ, Yli-Pirilä P, Tiitta P, Romakkaniemi S, Vaattovaara P, Kajos MK, Rinne J, Heijari J, Kortelainen A, Miettinen P, Kroll JH, Holopainen JK, Smith JN, Joutsensaari J, Kulmala M, Worsnop DR, Laaksonen A. 2009. New particle formation from the oxidation of direct emissions of pine seedlings. ATMOSPHERIC CHEMISTRY AND PHYSICS 9: 8121-8137. 2009

Canagaratna MR, Donahue NM, Prevot ASH, Zhang Q, Kroll JH, Decarlo PF, Allan JD, Coe H, Ng NL, Aiken AC, Docherty KS, Ulbrich IM, Grieshop AP, Robinson AL, Tian J, Laaksonen A, Raatikainen T, Rautiainen J, Vaattovaara P, Ehn M, Kulmala M. 2009. Evolution of organic aerosols in the atmosphere. SCIENCE 326: 1525-1529. 2009

Jaatinen A, Hamed A, Joutsensaari J, Mikkonen S, Birmili W, Wehner B, Spindler G, Wiedensohler A, Decesari S, Mircea M, Facchini MC, Junninen H, Kulmala M, Lehtinen KEJ, Laaksonen A. 2009. The applicability of three different nucleation event day prediction methods at three measurement sites in Europe: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 151-155. 2009

Kivekäs N, Kerminen V-M, Raatikainen T, Vaattovaara P, Laaksonen A, Lihavainen H. 2009. Physical and chemical characteristics of aerosol particles and cloud-droplet activation during the Second Pallas Cloud Experiment (Second PaCE) BOREAL ENVIRONMENT RESEARCH 14: 515-526. 2009

Kortelainen A, Miettinen P, Romakkaniemi S, Laaksonen A. 2009. V-TDMA data from chamber experiments: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 204-207. 2009

Leskinen A, Portin H, Komppula M, Miettinen P, Arola A, Lihavainen H, Hatakka J, Laaksonen A, Lehtinen KEJ. 2009. Overview of the research activities and results at Puijo semi-urban measurement station. BOREAL ENVIRONMENT RESEARCH 14: 576-590. 2009

Leskinen A, Portin H, Komppula M, Miettinen P, Lihavainen H, Hatakka J, Laaksonen A, Lehtinen KEJ. 2009. Recent research activities at the Puijo semi-urban measurement station, Nucleation and Atmospheric Aerosols 18th International Conference. 858-861. 2009

Leskinen A, Portin H, Komppula M, Miettinen P, Lihavainen H, Hatakka J, Laaksonen A, Lehtinen KEJ. 2009. Recent research activities at the Puijo semi-urban measurement station: Kulmala M, Bäck J, Nieminen T, Lauri A, Proceedings of the Finnish Center of Excellence and Graduate School in Physics, Chemistry, Biology and Meteorology of Atmospheric Composition and Climate Change Annual Workshop. Report Series in Aerosol Science. 247-250. 2009

Joutsensaari J, Yli-Pirilä P, Blande JD, Heijari J, Holopainen JK, Worsnop DR, Laaksonen A. 2009. SOA formation by ozonolysis of biogenic VOCs emitted from biotic stressed boreal trees, Nucleation and Atmospheric Aerosols 18th International Conference.ICPF ASCR, v.v.i. and CAS. 309-312. 2009

Raatikainen T, Laaksonen A, Hyvärinen A-P, Vanhanen J, Hautio K, Lihavainen H, Viisanen Y, Napari I. 2008. Surface tensions of multicomponent aqueous electrolyte solutions: predictive models based on binary limits. JOURNAL OF PHYSICAL CHEMISTRY. C 112: 10428-10434. 2008

Mikkonen S, Hamed A, Lehtinen KEJ, Joutsensaari J, Jaatinen A, Sogacheva L, Facchini MC, Laaksonen A. 2008. New particle formation events in Northern Italy based on a three-year analysis: Markku Kulmala, Jaana Bäck, and Martta Salonen, Proceedings of the Nordic Center of Excellence BACCI ( Biosphere-Atmosphere-Cloud-Climate Interactions) and the Finnish Center of Excellence``Research Unit on Physics, Chemistry, and Biology of Atmospheric Composition and Climate Change``. Report Series in Aerosol Science. 158-161. 2008

Mikkonen S, Lehtinen KEJ, Hamed A, Joutsensaari J, Laaksonen A. 2008. Finding factors affecting to the number concentration of atmospheric aerosol with advanced statistical methods, NOSA Aerosol Symposium. 77-78. 2008

Malila J, Hyvärinen A-P, Viisanen Y, Laaksonen A. 2008. Displacement barrier heights from experimental nucleation rate data. ATMOSPHERIC RESEARCH 90: 303-312. 2008

Romakkaniemi S, Kokkola H, Pietikäinen J-P, Hienola J, Kulmala M, Lehtinen KEJ, Laaksonen A. 2008. Microphysics of ice particle and cloud droplet formation: effect of semivolatile gases. REPORT SERIES IN AEROSOL SCIENCE 93: 205-209. 2008

Raatikainen T, Rautiainen J, Tiitta P, Miettinen P, Vaattovaara P, Ehn M, Kulmala M, Laaksonen A, Worsnop D. 2008. Aerosol composition measurements using Q-ams in Hyytiälä, Finland. REPORT SERIES IN AEROSOL SCIENCE 92: 195-199. 2008

Raatikainen T, Sorjamaa R, Kokkola H, Prisle NL, Svenningsson B, Bilde M, Laaksonen A. 2008. The effect of surface active compounds on cloud droplet activation. REPORT SERIES IN AEROSOL SCIENCE 92: 166-170. 2008

Romakkaniemi S, Kokkola H, Laaksonen A. 2008. Extension of Köhler theory for polydisperse aerosol population in the presence of semivolatile gases: applications for droplet growth from radiative fog to stratospheric supercooled ternary solution clouds. REPORT SERIES IN AEROSOL SCIENCE 93: 200-203. 2008

Tiitta P, Miettinen P, Vaattovaara P, Joutsensaari J, Laaksonen A, Aalto P, Kulmala M. 2008. Determination of the characteristics of ultrafine particles and air ions from road-side measurements. REPORT SERIES IN AEROSOL SCIENCE 92: 256-261. 2008

Vaattovaara P, Joutsensaari J, Laaksonen A. 2008. Overview of organic TDMA studies during period 2002-2007 REPORT SERIES IN AEROSOL SCIENCE 92: 262-269. 2008

Malila J, Laaksonen A. 2008. Properties of supercooled water clusters from nucleation rate data with the effect of non-ideal vapour phase, Proceedings of the 15th International Conference on the Properties of Water and Steam [CD].ICPWS, IAPWS. 2008

Prisle NL, Raatikainen T, Sorjamaa R, Svenningsson B, Laaksonen A, Bilde M. 2008. Surfactant partitioning in cloud droplet activation: a study of C8,C10,C12 and C14 normal fatty acid sodium salts. TELLUS. SER B. CHEMICAL AND PHYSICAL METEOROLOGY 60B: 416-431. 2008

Makkonen R, Asmi A, Korhonen H, Kokkola H, Järvenoja S, Räisänen P, Lehtinen KEJ, Laaksonen A, Kerminen V-M, Järvinen H, Lohmann U, Feichter J, Kulmala M. 2008. Sensitivity of aerosol concentrations and cloud properties to nucleation and secondary organic distribution in ECHAM5-HAM global circulation model ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 8: 10955-10998. 2008

Joutsensaari J, Yli-pirilä P, Heijari J, Pinto DM, Loivamäki M, Vuorinen T, Miettinen P, Tiiva P, Nerg A-M, Raatikainen T, Rautiainen J, Kroll J, Kajos M, Ehn M, Worsnop DR, Holopainen JK, Laaksonen A. 2008. Formation of secondary organic aerosols by ozonolysis of plant-released volatiles. REPORT SERIES IN AEROSOL SCIENCE 93: 61-63. 2008

Leskinen A, Portin H, Komppula M, Miettinen P, Pietikäinen N, Hirvonen J, Hyvärinen A-P, Kortelainen A, Raatikainen T, Sorjamaa R, Tiitta P, Vaattovaara P, Laaksonen A, Lehtinen KEJ, Lihavainen H, Viisanen Y. 2008. Activities at the Puijo semi-urban aerosol-cloud interaction measurement station. REPORT SERIES IN AEROSOL SCIENCE 92: 127-130. 2008

Berndt T, Stratmann F, Bräsel S, Heintzenberg J, Laaksonen A, Kulmala M. 2008. SO2 oxidation products other than H2SO4 as a trigger of new particle formation. Part 1: Laboratory investigations ATMOSPHERIC CHEMISTRY AND PHYSICS 8: 6365-6374. 2008

Hamed A, Jaatinen A, Joutsensaari J, Birmili W, Wehner B, Wiedensohler A, Facchini MC, Decesari S, Mircea M, Junninen H, Kulmala M, Lehtinen KEJ, Laaksonen A. 2008. Nucleation events in Italy, Germany and Finland: a comparative study, NOSA Aerosol Symposium. 39-40. 2008

Hamed A, Mikkonen S, Joutsensaari J, Lehtinen KEJ, Jaatinen A, Wehner B, Birmili W, Wiedensohler A, Cavalli F, Decesari S, Mircea M, Fuzzi S, Facchini MC, Laaksonen A. 2008. A comparison of new particle formation events in Eastern Germany and in Northern Italy on a three-year analysis. REPORT SERIES IN AEROSOL SCIENCE 93: 37-39. 2008

Duplissy J, Gysel M, Alfarra MR, Dommen J, Metzger A, Prevot ASH, Weingartner E, Laaksonen A, Raatikainen T, Good N, Turner SF, McFiggans G, Baltensperger U. 2008. Cloud forming potential of secondary organic aerosol under near atmospheric conditions. GEOPHYSICAL RESEARCH LETTERS 35: L03818. 2008

Kokkola H, Korhonen H, Lehtinen KEJ, Makkonen R, Asmi A, Järvenoja S, Anttila T, Partanen A-I, Kulmala M, Järvinen H, Laaksonen A, Kerminen V-M. 2008. SALSA - a sectional aerosol module for large scale applications. ATMOSPHERIC CHEMISTRY AND PHYSICS 8: 2469-2483. 2008

Kokkola H, Vesterinen M, Anttila T, Laaksonen A, Lehtinen KEJ. 2008. Technical note: analytical formulae for the critical supersaturations and droplet diameters of CCN containing insoluble material. ATMOSPHERIC CHEMISTRY AND PHYSICS 8: 1985-1988. 2008

Kulmala M, Kerminen V-M, Laaksonen A, Riipinen I, Sipilä M, Ruuskanen TM, Sogacheva L, Hari P, Bäck J, Lehtinen KEJ, Viisanen Y, Bilde M, Svenningsson B, Lazaridis M, Torseth K, Tunved P, Nilsson ED, Pryor S, Sorensen L-L, Horrak U, Winkler PM, Swietlicki E, Riekkola M-L, Krejci R, Hoyle C, Hov O, Myhre G, Hansson H-C. 2008. Overview of the biosphere-aerosol-cloud-climate interactions (BACCI) studies. TELLUS. SER B. CHEMICAL AND PHYSICAL METEOROLOGY 60B: 300-317. 2008

Laaksonen A, Kulmala M, Berndt T, Stratmann F, Mikkonen S, Ruuskanen A, Lehtinen KEJ, Dal Maso M, Aalto P, Petäjä T, Riipinen I, Sihto S-L, Janson R, Arnold F, Hanke M, Ücker J, Umann B, Sellegri K, O¿Dowd CD, Viisanen Y. 2008. SO2 oxidation products other than H2SO4 as a trigger of new particle formation. Part 2: Comparison of ambient and laboratory measurements, and atmospheric implications. ATMOSPHERIC CHEMISTRY AND PHYSICS 8: 7255-7264, 2008. 2008

Laaksonen A, Kulmala M, O`Dowd CD, Joutsensaari J, Vaattovaara P, Mikkonen S, Lehtinen KEJ, Sogacheva L, Dal Maso M, Aalto P, Petäjä T, Sogachev A, Yoon YJ, Lihavainen H, Nilsson D, Facchini MC. 2008. The role of VOC oxidation products in continental new particle formation. ATMOSPHERIC CHEMISTRY AND PHYSICS 8: 2657-2665. 2008

Laaksonen A, Lehtinen KEJ. 2008. Nucleation. Teoksessa: Colbeck I (toim.), Environmental Chemistry of Aerosols.Blackwell Publishing. ss. 31-46. 2008

Pinto DM, Tiiva P, Miettinen P, Joutsensaari J, Kokkola H, Nerg A-M, Laaksonen A, Holopainen JK. 2007. The effects of increasing atmospheric ozone on biogenic monoterpene profiles and the formation of secondary aerosols. ATMOSPHERIC ENVIRONMENT 41: 4877-4887. 2007

Vesterinen M, Lehtinen KEJ, Kulmala M, Laaksonen A. 2007. Effect of particle phase oligomer formation on aerosol growth. ATMOSPHERIC ENVIRONMENT 41: 1768-1776. 2007

Vaattovaara P, Kortelainen A, Laaksonen A. 2007. Organic fraction in recently formed nucleation event particles in mace head coastal atmosphere during map 2006 summer campaign: O'Dowd CD, Wagner PE, Nucleation and Atmospheric Aerosols, 17th International Conference, ICNAA 2007.Springer Netherlands. 1075-1078. 2007

Vaattovaara P, Huttunen PE, Yoon YJ, Joutsensaari J, Lehtinen KEJ, O'Dowd CD, Laaksonen A. 2007. Significant secondary organic effect of marine biota origin on coastal and open ocean aerosols, Solas Open Science Conference. 202-203. 2007

Tiitta P, Miettinen P, Vaattovaara P, Laaksonen A, Joutsensaari J, Hirsikko A, Aalto P, Kulmala M. 2007. Road-side measurements of air ions, NOSA Aerosol Symposium. Conference proceedings. 102-103. 2007

Tiitta P, Miettinen P, Vaattovaara P, Laaksonen A, Joutsensaari J, Hirsikko A, Aalto P, Kulmala M. 2007. Road-side measurements of aerosol and ion number size distributions:a comparison with remote site measurements. BOREAL ENVIRONMENT RESEARCH 12: 311-321. 2007

Sorjamaa R, Laaksonen A. 2007. The effect of H2O adsorption on cloud drop activation of insoluble particles: a theoretical framework ATMOSPHERIC CHEMISTRY AND PHYSICS 7: 6175-6180. 2007

Sogacheva L, Hamed A, Facchini MC, Kulmala M, Laaksonen A. 2007. Relation of air mass history to nucleation events in Po Valley, Italy, using back trajectories analysis. ATMOSPHERIC CHEMISTRY AND PHYSICS 7: 839-853. 2007

Schultz DM, Mikkonen S, Laaksonen A, Richman MB. 2007. Weekly precipitation cycles? Lack of evidence from United States surface stations GEOPHYSICAL RESEARCH LETTERS 34 L22815: 4 s. 2007

Saarelainen M, Laaksonen A, Hirvonen PE. 2007. Students' initial knowledge of electric and magnetic fields - more profound explanations and reasoning models for undesired conceptions. EUROPEAN JOURNAL OF PHYSICS 28: 51-60. 2007

Riipinen I, Sihto S-L, Kulmala M, Arnold F, Dal Maso M, Birmili W, Saarnio K, Teinilä K, Kerminen V-M, Laaksonen A, Lehtinen KEJ. 2007. Connections between atmospheric sulphuric acid and new particle formation during QUEST lll-IV campaigns in Heidelberg and Hyytiälä. ATMOSPHERIC CHEMISTRY AND PHYSICS 7: 1899-1914. 2007

Pinto DM, Joutsensaari J, Tiiva P, Miettinen P, Blande J, Dong W-X, Nerg AM, Laaksonen A, Holopainen JK. 2007. Effects of atmospheric ozone on biogenic volatile organic compounds: an atmospheric and ecological perspective: Xiang H, Akieh MN, Vuorio A-M, Jokinen T, Sillanpää M, Eighth Finnish Conference of Environmental Sciences. 131-134. 2007

Joutsensaari J, Yli-Pirilä P, Heijari J, Holopainen JK, Miettinen P, Raatikainen T, Rautiainen J, Worsnop DR, Laaksonen A. 2007. Secondary organic aerosol formation by ozonolysis of volatiles emitted from trees, NOSA Aerosol Symposium. Conference proceedings.Nordic Society for Aerosol Research. 38-39. 2007

Ehn M, Petäjä T, Aufmhoff H, Aalto P, Hämeri K, Arnold F, Laaksonen A, Kulmala M. 2007. Hygroscopic properties of ultrafine aerosol particles in the boreal forest: diurnal variation, solubility and the influence of sulfuric acid. ATMOSPHERIC CHEMISTRY AND PHYSICS 7: 211-222. 2007

Hamed A, Jaatinen A, Wehner B, Birmili W, Wiedensohler A, Cavalli F, Decesari S, Mircea M, Fuzzi S, Facchini MC, Dal Maso M, Junninen H, Riipinen I, Kulmala M, Joutsensaari J, Lehtinen KEJ, Laaksonen A. 2007. A comparison of new particle formation at different sites in the European boundary layer. Teoksessa: (toim.), NOSA Aerosol Symoposium. Conference proceedings.Nordic Society for Aerosol Research. ss. 32-33. 2007

Hamed A, Joutsensaari J, Mikkonen S, Sogacheva L, Dal Maso M, Kulmala M, Cavalli F, Fuzzi S, Facchini MC, Decesari S, Mircea M, Lehtinen KEJ, Laaksonen A. 2007. Nucleation and growth of new particles in Po Valley, Italy ATMOSPHERIC CHEMISTRY AND PHYSICS 7: 355-376. 2007

Hamed A, Lehtinen KEJ, Joutsensaari J, Wehner B, Birmili W, Wiedensohler A, Cavalli F, Decesari S, Mircea M, Fuzzi S, Facchini MC, Laaksonen A. 2007. Nucleation events in Melpitz, Germany, and Po Valley, Italy: similarities and differences: O¿Dowd CD, Wagner P, Nucleation and Atmospheric Aerosols. 17th International conference. ICNAA 2007.Springer. 240-244. 2007

Laaksonen A, Kulmala M, O'Dowd CD, Joutsensaari J, Vaattovaara P, Mikkonen S, Lehtinen KEJ, Sogacheva L, Dal Maso M, Aalto P, Petäjä T, Sogachev A, Yoon YJ, Lihavainen H, Nilsson D, Facchini MC, Cavalli F, Fuzzi S, Hoffmann T, Arnold F, Hanke M, Sellegri K, Umann B, Junkermann W, Coe H, Allan JD, Rami Alfarra M, Worsnop DR, Riekkola M-L, Hyötyläinen T, Viisanen Y. 2007. The role of VOC oxidation products in continental new particle formation ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 7: 7819-7841. 2007

Leskinen A, Raatikainen T, Hirvonen J, Hyvärinen A-P, Kortelainen A, Miettinen P, Pietikäinen N, Portin H, Rautiainen J, Sorjamaa R, Tiitta P, Vaattovaara P, Laaksonen A, Lehtinen KEJ, Lihavainen H, Viisanen Y. 2007. On aerosol-cloud studies at the Puijo semiurban measurement station: O'Dowd CD, Wagner PE, Nucleation and Atmospheric Aerosols, 17th International Conference, ICNAA 2007. 561-564. 2007

Mikkonen S, Lehtinen KEJ, Hamed A, Joutsensaari J, Laaksonen A. 2007. Analysing the number concentration of 50 nm particles with multivariate mixed effects model: Colin O'Dowd and Paul Wagner, Nucleation and Atmospheric Aerosols, Proceedings of the 17th international ICNAA Conference.Springer. 1008-1012. 2007

Mikkonen S, Lehtinen KEJ, Hamed A, Joutsensaari J, Laaksonen A. 2007. Multivariate mixed effects regression model in the analysis of number concentration of 50NM particles, NOSA Aerosol Symposium. Conference proceedings.Nordic Society for Aerosol Research. 76-77. 2007

Napari I, Laaksonen A. 2007. Surface tension and scaling of critical nuclei in diatomic and triatomic fluids. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 126 134503: 7 s. 2007

Sorjamaa R, Laaksonen A. 2006. The influence of surfactant properties on critical supersaturations of cloud condensation nuclei. JOURNAL OF AEROSOL SCIENCE 37: 1730-1736. 2006

Romakkaniemi S, Kokkola H, Lehtinen KEJ, Laaksonen A. 2006. The influence of nitric acid on the cloud processing of aerosol particles. ATMOSPHERIC CHEMISTRY AND PHYSICS 6: 1627-1634. 2006

Sihto S-L, Kulmala M, Kerminen V-M, Dal Maso M, Petäjä T, Riipinen I, Korhonen H, Arnold F, Janson R, Boy M, Laaksonen A, Lehtinen KEJ. 2006. Atmospheric sulphuric acid and aerosol formation: implications from atmospheric measurements for nucleation and early growth mechanisms. ATMOSPHERIC CHEMISTRY AND PHYSICS 6: 4079-4091. 2006

Sogacheva L, Hamed A, Facchini MC, Kulmala M, Laaksonen A. 2006. Relation of air mass history to nucleation events in Po Valley, Italy, using back trajectories analysis. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 6: 11209-11246. 2006

Sorjamaa R, Laaksonen A. 2006. The effect of surfactant partitioning on critical supersaturation of cloud drops: a generalized approach. Teoksessa: (toim.), 7th International Aerosol Conference. Abstract book.American Association for Aerosol Research (AAAR). ss. 751-752. 2006

Sorjamaa R, Laaksonen A. 2006. The influence of surface active compounds on critical supersaturation of cloud drops: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M, NOSA 2006 Aerosol symposium, combined with the X Finnish National Aerosol Symposium, Finnish-Czech Aerosol Symposium, and BACCI workshop.Aerosolitutkimusseura R.Y.. Report Series in Aerosol Science. 357-360. 2006

Vaattovaara P, Huttunen PE, Yoon YJ, Joutsensaari J, Lehtinen KEJ, O'Dowd CD, Laaksonen A. 2006. The composition of nucleation and Aitken modes particles during coastal nucleation events: evidence for marine secondary organic contribution. ATMOSPHERIC CHEMISTRY AND PHYSICS 6: 4601-4616. 2006

Tiitta P, Miettinen P, Vaattovaara P, Joutsensaari J, Laaksonen A, Aalto P, Kulmala M. 2006. Determination of the characteristics of ultrafine particles from road-side measurements. REPORT SERIES IN AEROSOL SCIENCE 81B: 609-611. 2006

Tiitta P, Miettinen P, Vaattovaara P, Joutsensaari J, Laaksonen A, Aalto P, Kulmala M. 2006. Determination of the chemical characteristics of particles from road-side measurements, 7th International Aerosol Conference. 1812-1813. 2006

Tiitta P, Miettinen P, Vaattovaara P, Laaksonen A, Joutsensaari J, Hirsikko A, Aalto P, Kulmala M. 2006. Road-side measurements of air ions: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M, NOSA 2006 Aerosol Symposium, combined with the X Finnish National Aerosol Symposium. Report Series in Aerosol Science. 380-381. 2006

Vaattovaara P, Huttunen PE, Yoon YJ, Joutsensaari J, Lehtinen KEJ, O'Dowd CD, Laaksonen A. 2006. Evidence for marine secondary organic contribution to newly-formed nanometer-sized particles formation: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M, NOSA 2006 Aerosol symposium, combined with the X Finnish National Aerosol Symposium. Report Series in Aerosol Science. 394-398. 2006

Vaattovaara P, Huttunen PE, Yoon YJ, Joutsensaari J, Lehtinen KEJ, O'Dowd CD, Laaksonen A. 2006. Marine secondary organic contribution to ultrafine particles. REPORT SERIES IN AEROSOL SCIENCE 81 A: 631-633. 2006

Mikkonen S, Lehtinen KEJ, Hamed A, Joutsensaari J, Laaksonen A. 2006. Modelling the size distribution of 3-50 Nm particles with generalized models: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M, NOSA 2006 Aerosol symposium, combined with the X Finnish National Aerosol Symposium. Report Series in Aerosol Science. 246-48. 2006

Vaattovaara P, Huttunen PE, Yoon YJ, Joutsensaari J, Lehtinen KEJ, O¿Dowd CD, Laaksonen A. 2006. Marine secondary organic contribution to coastal nucleation events, Abstract Book of 7th Interantional Aerosol Conference. 1264. 2006

Riipinen I, Sihto S-L, Kulmala M, Arnold F, Dal Maso, Birmili W, Saario K, Teinilä K, Kerminen V-M, Laaksonen A, Lehtinen K.E.J. 2006. Connections between atmospheric sulphuric acid and new particle formation during QUEST lll-iV campaigns in Heidelberg and Hyytiälä. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 6: 10837-10882. 2006

Raatikainen T, Vaattovaara P, Rautiainen J, Tiitta P, Laaksonen A. 2006. Composition of ambient aerosols during one nucleation and growth event in Hyytiälä, Finland: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M, NOSA 2006 Aerosol symposium, combined with the X Finnish National Aerosol Symposium, Finnish-Czech Aerosol Symposium, and BACCI workshop. Report Series in Aerosol Science. 302-305. 2006

Mikkonen S, Lehtinen KEJ, Hamed A, Joutsensaari J, Facchini MC, Laaksonen A. 2006. Using discriminant analysis as a nucleation event classification method. ATMOSPHERIC CHEMISTRY AND PHYSICS 6: 5549-5557. 2006

Joutsensaari J, Loivamäki M, Vuorinen T, Miettinen P, Pinto DM, Tiiva P, Nerg A-M, Holopainen JK, Laaksonen A. 2006. Formation of secondary organic aerosols by ozonolysis of plant-released volatiles: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M, NOSA 2006 Aerosol symposium, combined with the X Finnish National Aerosol Symposium. Report Series in Aerosol Science. 118-121. 2006

Ehn M, Petäjä T, Aufmhoff H, Hämeri K, Arnold F, Laaksonen A, Kulmala M. 2006. Hydroscopic properties of ultrafine aerosol particles in the boreal forest: diurnal variation, solubility and the influence of sulfuric acid. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 6: 9937-9965. 2006

Hamed A, Joutsensaari J, Cavalli F, Facchini MC, Fuzzi S, Laaksonen A. 2006. Characterization of new particle formation events in highly polluted area, 7th International Aerosol Conference.AAAR. 591-592. 2006

Hamed A, Joutsensaari J, Mikkonen S, Facchini CM, Laaksonen A. 2006. Correlation of nucleation events with environmental variables in highly polutted area, Po Valley, Italy. Teoksessa: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M (toim.), NOSA 2006 Aerosol symposium, combined with the X Finnish National Aerosol Symposium. Report Series in Aerosol Science. ss. 86-89. 2006

Hamed A, Joutsensaari J, Mikkonen S, Sogacheva L, Dal Maso M, Kulmala M, Cavalli F, Fuzzi S, Facchini MC, Decesari S, Mircea M, Lehtinen KEJ, Laaksonen A. 2006. Nucleation and growth of new particles in Po Valley, Italy. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 6: 9603-9653. 2006

Hiltunen LJ, Vaattovaara P, Joutsensaari J, Laaksonen A. 2006. A novel method for measuring vapor adsorption on nanoparticles: Vehkamäki H, Bergman T, Julin J, Salonen M, Kulmala M, NOSA 2006 Aerosol symposium, combined with the X Finnish National Aerosol Symposium. Report Series in Aerosol Science. 95-97. 2006

Hiltunen LJ, Vaattovaara P, Joutsensaari J, Laaksonen A. 2006. An apparatus for studying vapor adsorption on nanoparticles, 7th International Aerosol Conference.AAAR. 389-390. 2006

Hiltunen LJ, Vaattovaara P, Joutsensaari J, Laaksonen A. 2006. A new method for studying vapor adsorption on nanoparticles. REPORT SERIES IN AEROSOL SCIENCE 81A: 173-175. 2006

Kokkola H, Joutsensaari J, Hyppönen N, Lehtinen KEJ, Laaksonen A. 2006. On the hygroscopic growth of ammoniated sulfate particles of non-stoichiometric composition. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 6: 1-16. 2006

Kokkola H, Sorjamaa R, Peräniemi A, Raatikainen T, Laaksonen A. 2006. Cloud formation of particles containing humic-like substances GEOPHYSICAL RESEARCH LETTERS 33 L10816: 5 s.. 2006

Komppula M, Lihavainen H, Hyvärinen AP, Kerminen VM, Aaltonen V, Engler C, Kivekäs N, Leskinen A, Vaattovaara P, Rautiainen J, Miettinen P, Tiitta P, Sorjamaa R, Hillamo R, Makkonen U, Viisanen Y, Laaksonen A. 2006. Physical and chemical properties of aerosol particles and cloud droplets during the second Pallas Cloud experiment (Second PaCE): Biswas P, Chen DR, Hering S, Abstract Book of 7th International Areosol Conference. 1352-1353. 2006

Komppula M, Lihavainen H, Kerminen V-M, Hyvärinen A-P, Aaltonen V, Engler C, Kivekäs N, Leskinen A, Rautiainen J, Miettinen P, Vaattovaara P, Tiitta P, Sorjamaa R, Hillamo R., Viisanen Y, Laaksonen A. 2006. Overview of the second Pallas cloud experiment (second pace): Reissell A, Aarflot A, Integrated land ecosystem - atmosphere processes study. Proceedings of the 1st iLEAPS Science Conference.Aerosolitutkimusseura. Report Series in Aerosol Science. 151-152. 2006

Kulmala M, Lehtinen KEJ, Laaksonen A. 2006. Cluster activation theory as an explanation of the linear dependence between formation rate of 3 nm particles and sulphuric acid concentration. ATMOSPHERIC CHEMISTRY AND PHYSICS 6: 787-793. 2006

McFiggans G, Artaxo P, Baltensperger U, Coe H, Facchini MC, Feingold G, Fuzzi S, Gysel M, Laaksonen A, Lohmann U, Mentel TF, Murphy DM, O¿Dowd CD, Snider JR, Weingartner E. 2006. The effect of physical and chemical aerosol properties on warm cloud droplet activation. ATMOSPHERIC CHEMISTRY AND PHYSICS 6: 2593-2649. 2006

Allan JD, Alfarra MR, Bower KN, Coe H, Jayne JT, Worsnop DR, Aalto PP, Kulmala M, Hyötyläinen T, Cavalli F, Laaksonen A. 2006. Size and composition measurements of background aerosol and new particle growth in a Finnish forest during QUEST 2 using an Aerodyne Aerosol Mass Spectrometer. ATMOSPHERIC CHEMISTRY AND PHYSICS 6: 315-327. 2006

Miettinen P, Holopainen J, Joutsensaari J, Laaksonen A. 2006. Particle formation by ozonolysis of inducible plant volatiles REPORT SERIES IN AEROSOL SCIENCE 81B: 398-399. 2006

Raatikainen T, Laaksonen A. 2005. Application of several activity coefficient models to water-organic electrolyte aerosols of atmospheric interest. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 5: 2475-2495. 2005

Vaattovaara P, Räsänen M, Kühn T, Joutsensaari J, Laaksonen A. 2005. A method for detecting the presence of organic fraction in nucleation mode sized particles. ATMOSPHERIC CHEMISTRY AND PHYSICS 5: 3277-3287. 2005

Tiitta M, Miettinen P, Vaattovaara P, Joutsensaari J, Laaksonen A, Aalto P, Kulmala M. 2005. Monitoring of particles in a real-world driving conditions, 2nd Joint Bacci Meeting.Nordic Center of Excellence, BACCI. Aerosol Research Group. 5 s.. 2005

Sihto S.-L., Kulmala M., Kerminen V-M., Laaksonen A., Lehtinen K.E.J.. 2005. Role of sulphuric acid in particle formation events in Finland, AAAR 2005 Proceedings. 2005

Salonen, Martta, Malila, Jussi, Napari, Ismo, Laaksonen, Ari. 2005. Evaluation of Surface Composition of Surface Active Water¿Alcohol Type Mixtures:¿ A Comparison of Semiempirical Models. JOURNAL OF PHYSICAL CHEMISTRY B. CONDENSEC MATTER, MATERIALS, SURFACES, INTERFACES AND BIOPHYSICAL 109 8: 3472-3479. 2005

Salonen M, Malila J, Napari I, Laaksonen A. 2005. Evaluation of surface composition of surface active water-alcohol type mixtures: a comparison of semiempirical models JOURNAL OF PHYSICAL CHEMISTRY B. CONDENSEC MATTER, MATERIALS, SURFACES, INTERFACES AND BIOPHYSICAL 109: 3472-3479. 2005

Romakkaniemi S, Kokkola H, Lehtinen K, Laaksonen A. 2005. The influence of nitric acid on the cloud processing of aerosol particles. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS: 10197-10216. 2005

Romakkaniemi S, Kokkola H, Laaksonen A. 2005. Soluble trace gas effect on cloud condensation nuclei activation: influence of initial equilibration on cloud model results JOURNAL OF GEOPHYSICAL RESEARCH D. 110: D15202. 2005

Romakkaniemi S, Kokkola H, Laaksonen A. 2005. Parameterization of the nitric acid effect on CCN activation. ATMOSPHERIC CHEMISTRY AND PHYSICS 5: 879-885. 2005

Raatikainen T, Laaksonen A. 2005. Application of several activity coefficient models to water-organic electrolyte aerosols of atmospheric interest. ATMOSPHERIC CHEMISTRY AND PHYSICS 5: 2475-2495. 2005

Petäjä T, Kerminen VM, Hämeri K, Vaattovaara P, Joutsensaari J, Junkermann W, Laaksonen A, Kulmala M. 2005. Effects of SO2 oxidation on ambient aerosol growth in water and ethanol vapours. ATMOSPHERIC CHEMISTRY AND PHYSICS 5: 767-779. 2005

Mcfiggans G, Artaxo P, Baltensperger U, Coe H, Faccihini MC, Feingold G, Fuzzi S, Gysel M, Laaksonen A, Lohmann U, Mentel TF, Murphy DM, O¿Dowd CD, Snider JR, Weingartner E. 2005. The effect of physical and chemical aerosol properties on warm cloud droplet activation. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 5: 8507-8646. 2005

Laaksonen A, Vesala T, Kulmala M, Winkler PM, Wagner PE. 2005. Commentary on cloud modelling and the mass accommodation coefficient of water. ATMOSPHERIC CHEMISTRY AND PHYSICS 5: 461-464. 2005

Laaksonen A, Hamed A, Joutsensaari J, Hiltunen L, Cavalli F, Junkermann W, Asmi A, Fuzzi S, Facchini MC. 2005. Cloud condensation nucleus production from nucleation events at a highly polluted region. GEOPHYSICAL RESEARCH LETTERS 32: L06812. 2005

Kulmala M, Lehtinen KEJ, Laaksonen A. 2005. Why formation rate of 3 nm particles dependes lineary on sulphuric acid concentration ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 5: 11277-11293. 2005

Kulmala M, Hari P, Laaksonen A, Vesala T, Viisanen Y. 2005. Research unit of physics, chemistry and biology of atmospheric composition and climate change: overview of recent results. BOREAL ENVIRONMENT RESEARCH 10: 459-477. 2005

Joutsensaari J, Loivamäki M, Vuorinen T, Miettinen P, Nerg A-M, Holopainen JK, Laaksonen A. 2005. Nanoparticle formation by ozonolysis of inducible plant volatiles. ATMOSPHERIC CHEMISTRY AND PHYSICS 5: 1489-1495. 2005

Hyvärinen A-P, Raatikainen T, Laaksonen A, Viisanen Y, Lihavainen H. 2005. Surface tensions and densities of H2SO4 + NH3 + water solutions GEOPHYSICAL RESEARCH LETTERS 32: L16806. 2005

Sorjamaa R, Svenningsson B, Raatikainen T, Henning S, Bilde M, Laaksonen A. 2004. The role of surfactants in Köhler theory reconsidered. ATMOSPHERIC CHEMISTRY AND PHYSICS 4: 2107-2117. 2004

Romakkaniemi S, Kokkola H, Petzold A, Laaksonen A. 2004. Growth of upper tropospheric aerosols due to uptake of HNO3. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 4: 121-140. 2004

Romakkaniemi S, Kokkola H, Petzold A, Laaksonen A. 2004. Growth of upper tropospheric aerosols due to uptake of HNO3. ATMOSPHERIC CHEMISTRY AND PHYSICS 4: 549-556. 2004

Kulmala M, Kerminen V-M, Anttila T, Laaksonen A, O'Dowd CD. 2004. Organic aerosol formation via sulphate cluster activation. JOURNAL OF GEOPHYSICAL RESEARCH D. 109: D04205. 2004

Joutsensaari J, Toivonen T, Vaattovaara P, Vesterinen M, Vepsäläinen J, Laaksonen A. 2004. Time-resolved growth behavior of acid aerosols in ethanol vapor with a tandem-DMA technique. JOURNAL OF AEROSOL SCIENCE 35: 851-867. 2004

Hyvärinen A-P, Lihavainen H, Hautio K, Raatikainen T, Viisanen Y, Laaksonen A. 2004. Surface tensions and densities of sulfuric acid + dimethylamine + water solutions. JOURNAL OF CHEMICAL AND ENGINEERING DATA 49 4: 917-922. 2004

Gaman AI, Kulmala M, Vehkamäki H, Napari I, Mircea M, Facchini MC, Laaksonen A. 2004. Binary homogeneous nucleation in water-succinic acid and water-glutaric acid systems. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 120 1: 282-291. 2004

Djikaev YS, Napari I, Laaksonen A. 2004. On the closure conjectures for the Gibbsian approximation model of a binary droplet JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 120 20: 9752-9762. 2004

Boy M, Petäjä T, Dal Maso M, Rannik Ü, Rinne J, Aalto P, Laaksonen A, Vaattovaara P, Joutsensaari J, Hoffmann T, Warnke J, Apostolaki M, Stephanou EG, Tsapakis M, Kouvarakis A, Pio C, Carvalho A, Römpp A, Moortgat G, Spirig C, Guenther A, Greenberg J. 2004. Overview of the field measurement campaign in Hyytiälä, August 2001 in the framework of the EU project OSOA. ATMOSPHERIC CHEMISTRY AND PHYSICS 4: 657-678. 2004

Kokkola H, Romakkaniemi S, Laaksonen A. 2003. On the formation of radiation fogs under heavily polluted conditions. ATMOSPHERIC CHEMISTRY AND PHYSICS 3: 581-589. 2003

Wagner PE, Kaller D, Vrtala A, Lauri A, Kulmala M, Laaksonen A. 2003. Nucleation probability in binary heterogeneous nucleation of water-n-propanol vapor mixtures on insoluble and soluble nanoparticles PHYSICAL REVIEW. E. (ONLINE) 67: 021605-1 - 021605-12. 2003

Vaattovaara P, Joutsensaari J, Toivonen T, Laaksonen A. 2003. Otdma study of ultrafine particle composition at mace head, Abstracts of the European Aerosol Conference 2003. S621-S622. 2003

Sorjamaa R, Laaksonen A. 2003. Surfactant partitioning and the raoult effect in Köhler theory, Abstracts of the European aerosol conference 2003. S145-S146. 2003

Romakkaniemi S, Kokkola H, Laaksonen A. 2003. Model studies on the influence of initial equilibration of the soluble trace gases on CCN activation, Abstracts of the European Aerosol Conference 2003. S839-S840. 2003

Napari I, Laaksonen A. 2003. Disjoining pressure of thin films on spherical core particles JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 119 19: 10363-10366. 2003

Nadykto AB, Shchukin ER, Kulmala M, Lehtinen KEJ, Laaksonen A. 2003. Evaporation and condensational growth of liquid droplets in nonisothermal gas mixtures. AEROSOL SCIENCE AND TECHNOLOGY 37: 315-324. 2003

Nadykto AB, Mäkelä JM, Yu F, Kulmala M, Laaksonen A. 2003. Comparison of the experimental mobility equivalent diameter for small cluster ions with theoretical particle diameter corrected by effect of vapour polarity. CHEMICAL PHYSICS LETTERS 382: 6-11. 2003

Laaksonen A, Kulmala M, O'Dowd C, Viisanen Y, Nilsson D, Facchini MC, Hoffmann T, Arnold F, Schell B, Junkermann W. 2003. Preliminary results from the Quest project (quantification of aerosol nucleation in the European boundary layer), Abstracts of the European Aerosol Conference 2003. S1337-S1338. 2003

Kurtén T, Kulmala M, Dal Maso M, Suni T, Reissell A, Vehkamäki H, Hari P, Laaksonen A, Viisanen Y, Vesala T. 2003. Estimation of different forest-related contributions to the radiative balance using observations in southern Finland. BOREAL ENVIRONMENT RESEARCH 8: 275-285. 2003

Kulmala M, Napari I, Merikanto J, Vehkamäki H, Laakso A, Lehtinen KEJ, Noppel M, Laaksonen A. 2003. Homogeneous and ion induced nucleation: kinetic and thermodynamic nucleation regimes, Abstracts of the European Aerosol Conference 2003. S1393-S1394. 2003

Anttila T, Kerminen V-M, Kulmala M, Laaksonen A, O'Dowd C. 2003. Modelling the formation of organic particles in the atmosphere. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 3: 6147-6178. 2003

Kokkola H, Romakkaniemi S, Laaksonen A. 2003. Model simulations of fog formation in polluted air, Abstracts of the European Aerosol Conference 2003. S831-S832. 2003

Ding C-G, Laasonen K, Laaksonen A. 2003. Two sulfuric acids in small water clusters JOURNAL OF PHYSICAL CHEMISTRY. A 107: 8648-8658. 2003

Kokkola H, Romakkaniemi S, Laaksonen A. 2003. Köhler theory for a polydisperse droplet population in the presence of a soluble trace gas, and an application to stratospheric STS droplet growth ATMOSPHERIC CHEMISTRY AND PHYSICS 3: 2139-2146. 2003

Anttila T, Kerminen V-M, Laaksonen A, Kulmala M. 2003. Aerosol formation induced by simultaneous condensation of sulfuric acid and organic vapours. Teoksessa: (toim.), Abstracts of the European Aerosol Conference 2003. ss. S819-S820. 2003

Bodgan A, Kulmala M, MacKenzie AR, Laaksonen A. 2003. Study of finely divided aqueous systems as an aid to understanding the surface chemistry of polar stratospheric clouds: Case of HCl/H2O and HNO3/HCl/H2O systems. JOURNAL OF GEOPHYSICAL RESEARCH D. 108 D10: AAC 2-1 - 2-7. 2003

Boy M, Petäjä T, Dal Maso M, Rannik Ü, Rinne J, Aalto P, Laaksonen A, Vaattovaara P, Joutsensaari J, Hoffmann T, Warnke J, Apostolaki M, Stephanou EG, Tsapakis M, Kouvarakis A, Pio C, Carvalho A, Römpp A, Moortgat G, Spirig C, Guenther A, Greenberg J. 2003. Overview of the field measurement campaign in Hyytiälä, August 2001 in the framework of the EU project OSOA. ATMOSPHERIC CHEMISTRY AND PHYSICS DISCUSSIONS 3: 3769-3831. 2003

Bogdan A, Molina MJ, Kulmala M, MacKenzie AR, Laaksonen A. 2003. Study of finely divided aqueous systems as an aid to understanding the formation mechanism of polar stratospheric clouds: Case of HNO3/H20 and H2SO4/H2O systems. JOURNAL OF GEOPHYSICAL RESEARCH D. 108 D10: AAC 1-1 - 1-10. 2003

Ding C-G, Taskila T, Laasonen K, Laaksonen A. 2003. Reliable potential for small sulfuric acid-water clusters CHEMICAL PHYSICS 287: 7-19. 2003

Gaman AI, Vehkamäki H, Napari I, Laaksonen A, Kulmala M. 2003. On the formation of secondary organic aerosols: binary and ternary nucleation. Teoksessa: (toim.), Abstracts of the European Aerosol Conference 2003. ss. S1073-S1074. 2003

Hienola J, Kulmala M, Laaksonen A. 2003. Model studies on the effect of nitric acid vapour on cirrus cloud activation ATMOSPHERIC RESEARCH 65: 235-250. 2003

Joutsensaari J, Toivonen T, Vesterinen M, Vaattovaara P, Vepsäläinen J, Laaksonen A. 2003. Detection of organic acid and ammonium bisulfate particles with an organic tandem differential mobility analyzer, Abstracts of the European Aerosol Conference 2003. S1447-S1448. 2003

Kokkola H, Romakkaniemi S, Kulmala M, Laaksonen A. 2003. A cloud microphysics model including trace gas condensation and sulfate chemistry. BOREAL ENVIRONMENT RESEARCH 8: 413-424. 2003

Romakkaniemi S, Laaksonen A. 2002. On the effect of nitric acid on equilibrium growth of aerosol population in stratosphere. Teoksessa: Smolik J, Hämeri K (toim.), Czech - Finnish Aerosol Symposium.Aerosolitutkimusseura ry. Report Series in Aerosol Science. ss. 126-128. 2002

Vehkamäki H, Napari I, Lehtinen KEJ, Timmreck C, Noppel M, Laaksonen A, Kulmala M. 2002. Parameterizations for binary water-sulfuric acid and ternary water-sulfuric acid-ammonia nucleation: Smolik J, Hämeri K, Czech - Finnish Aerosol Symposium.Aerosolitutkimusseura ry. Report Series in Aerosol Science. 160-163. 2002

Vehkamäki H, Napari I, Lehtinen KEJ, Timmreck C, Noppel M, Laaksonen A, Kulmala M. 2002. Parameterizations for binary and ternary nucleation: Wang C-S, Sixth International Aerosol Conference, 2002 IAC. Vol 1.Chinese Assosiation for Aerosol Research in Taiwan. 179-180. 2002

Vehkamäki H, Kulmala M, Napari I, Lehtinen KEJ, Timmreck C, Noppel M, Laaksonen A. 2002. An improved parameterization for sulfuric acid-water nucleation rates for tropospheric and stratospheric conditions. JOURNAL OF GEOPHYSICAL RESEARCH D. 107 D22: AAC 3-1 - AAC 3-10. 2002

Vaattovaara P, Joutsensaari J, Laaksonen A. 2002. The composition of secondary organic aerosols: TDMA growth factor analysis using UNIFAC, Program Conference Proceedings NOSA Aerosol Symposium.Nordic Society for Aerosol Research. 81-82. 2002

Vaattovaara P, Joutsensaari J, Laaksonen A. 2002. Study of toluene oxidation products with and without ammonium sulfate seed aerosol using the organic tandem differential mobility analyzer (OTDMA): Wang C-S, Sixth International Aerosol Conference 2002 IAC. Vol. 2.Chinese Association for Aerosol Research in Taiwan. 849-850. 2002

Sorjamaa R, Laaksonen A. 2002. Slightly soluble organic material and Köhler curves: effect of particle size dependence of solubility: Smolik J, Hämeri K, Czech - Finnish Aerosol Symposium.Aerosolitutkimusseura ry. Report Series in Aerosol Science. 146-148. 2002

Nenes A, Charlson RJ, Facchini MC, Kulmala M, Laaksonen A, Seinfeld JH. 2002. Can chemical effects on cloud droplet number rival the first indirect effect? GEOPHYSICAL RESEARCH LETTERS 29 17: 1-4. 2002

Puustinen A, Laaksonen A, Janson R, Kulmala M. 2002. Growth of aerosol particles resulting from condensation of oxidation products of monoterpenes: Wang C-S, Sixth International Aerosol Conference 2002 IAC. Vol 1..Chinese Association for Aerosol Research in Taiwan. 259-260. 2002

Lauri A, Kulmala M, Wagner PE, Kaller D, Vrtala A, Laaksonen A. 2002. Heterogeneous nucleation of n-propanol and water: a new approach to determine the microscopic contact angle: Smolik J, Hämeri K, Czech - Finnish Aerosol Symposium.Aerosolitutkimusseura ry. Report Series in Aerosol Science. 106-110. 2002

Laaksonen A, Kerminen V-M, Anttila T, Kulmala M. 2002. Atmospheric nucleation: activation of thermodynamically stable sulfate clusters by water soluble organic species: Wang C-S, Sixth International Aerosol Conference 2002 IAC. Vol. 2.Chinese Association for Aerosol Research in Taiwan. 1247-1248. 2002

Kokkola H, Laaksonen A. 2002. On the mechanisms of smog formation in polluted air: Smolik J, Hämeri K, Czech - Finnish Aerosol Symposium.Aerosolitutkimusseura ry. Report Series in Aerosol Science. 77-79. 2002

Joutsensaari J, Vaattovaara P, Toivonen T, Vesterinen M, Vepsäläinen J, Laaksonen A. 2002. Detection of organic acid particles with an organic tandem differential mobility analyzer, Program Conference Proceedings NOSA Aerosol Symposium.Nordic Society for Aerosol Research. 33-34. 2002

Gaman A, Kulmala M, Vehkamäki H, Laaksonen A. 2002. On the binary homogeneous nucleation of water-C4-C5 dicarboxylic acids, Program Conference Proceedings NOSA Aerosol Symposium.Nordic Society for Aerosol Research. 21-22. 2002

Gaman A, Kulmala M, Vehkamäki H, Laaksonen A, Mircea M, Facchini MC. 2002. Binary homogenous nucleation of water - succinic acid vapours: model calculations: Smolik J, Hämeri K, Czech - Finnish Aeresol Symposium.Aerosolitutkimusseura ry. Report Series in Aerosol Science. 35-38. 2002

Napari I, Laaksonen A. 2001. The effect of potential truncation on the gas-liquid surface tension of planar interfaces and droplets. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 114 13: 5796-5801. 2001

Nadykto AB, Shchukin ER, Kulmala M, Laaksonen A. 2001. Analytical model of condensational growth of a multicomponent non-spherical particle, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S763-S764. 2001

Nadykto AB, Shchukin ER, Kulmala M, Laaksonen A. 2001. Modification of the fuchs condensation theory to predict transitional condensational growth of non-spherical ice particles, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S1039-S1040. 2001

Vaattovaara P, Joutsensaari J, Laaksonen A. 2001. Determination of the organic content of atmospheric aerosols using a TDMA, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S173-S174. 2001

Petersen D, Ortner R, Vrtala A, Wagner PE, Kulmala M, Laaksonen A. 2001. Soluble-insoluble transition in binary heterogeneous nucleation. PHYSICAL REVIEW LETTERS 87 22: 225703-1-225703-4. 2001

Romakkaniemi S, Hämeri K, Väkevä M, Laaksonen A. 2001. Adsorption of water on 8-15 nm NaCl and (NH4)2SO4 aerosols measured using an ultrafine tandem differential mobility analyzer JOURNAL OF PHYSICAL CHEMISTRY. A 105: 8183-8188. 2001

Sorjamaa R, Laaksonen A, Kulmala M. 2001. On the effect of gaseous ammonia on cloud drop formation. Teoksessa: (toim.), Abstracts of the European Aerosol Conference 2001, AEC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. ss. S761-S762. 2001

Laaksonen A, Napari I. 2001. Breakdown of the capillarity approximation in binary nucleation: a density functional study JOURNAL OF PHYSICAL CHEMISTRY B. CONDENSEC MATTER, MATERIALS, SURFACES, INTERFACES AND BIOPHYSICAL 105: 11678-11682. 2001

Viisanen Y, Pihlajamaa K, Lihavainen H, Laaksonen A. 2001. Surface tensions of water solutions of sulfuric acid and dimethylamine, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S257-S258. 2001

Laaksonen A. 2001. Nucleation theories and atmospheric aerosol formation. Teoksessa: (toim.), Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. ss. S323-S324. 2001

Lauri A, Kulmala M, Laaksonen A, Wagner PE. 2001. Problems in the classical theory of heterogeneous necleation for different binary vapour mixtures, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference. Journal of Aerosol Science. Supplement. S15-S16. 2001

Kulmala M, Lauri A, Vehkamäki H, Laaksonen A, Petersen D, Wagner PE. 2001. Strange predictions by binary heterogeneous nucleation theory compared with a quantitative experiment. JOURNAL OF PHYSICAL CHEMISTRY B. CONDENSEC MATTER, MATERIALS, SURFACES, INTERFACES AND BIOPHYSICAL 105: 11800-11808. 2001

Hoffmann T, Schell B, Hjorth J, Barnes I, Moortgat G, Reviejo M, Ciccioli P, Stephanou E, Kulmala M, Pio C, Laaksonen A, Hayman G, Guenther A, Müller K. 2001. Preliminary results of the OSOA project (origin and formation of secondary organic aerosol), Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S903-S904. 2001

Djikaev YS, Bowles R, Reiss H, Hämeri K, Laaksonen A, Väkevä M. 2001. Theory of size dependent deliquescence of nanoparticles: Relation to heterogeneous nucleation and comparison with experiments. JOURNAL OF PHYSICAL CHEMISTRY B. CONDENSEC MATTER, MATERIALS, SURFACES, INTERFACES AND BIOPHYSICAL 105: 7708-7722. 2001

Hienola J, Kulmala M, Laaksonen A. 2001. Condensation and evaporation of water vapor in mixed aerosols of liquid droplets and ice: numerical comparison of growth rate expressions. JOURNAL OF AEROSOL SCIENCE 32: 351-374. 2001

Hienola J, Kulmala M, Laaksonen A. 2001. Model studies of the effect of nitric acid vapour on cirrus formation. Teoksessa: (toim.), Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. ss. S739-S740. 2001

Charlson RJ, Seinfeld JH, Nenes A, Kulmala M, Laaksonen A, Facchini MC. 2001. Reshaping the theory of cloud formation. SCIENCE 292: 2025-2026. 2001

Hämeri K, Laaksonen A, Väkevä M, Suni T. 2001. Hygroscopic growth of ultrafine sodium chloride particles. JOURNAL OF GEOPHYSICAL RESEARCH D. 106 D18: 20,749-20,757. 2001

Kokkola H, Laaksonen A. 2001. The effect of sulfate production on cloud droplet formation, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S493-S494. 2001

Hämeri K, Väkevä M, Suni T, Laaksonen A, Romakkaniemi S, Hansson H-C. 2001. Deliquescence and hygroscopic properties of ultrafine particles, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S379-S380. 2001

Kulmala M, Hämeri K, Aalto PP, Mäkelä JM, Pirjola L, Douglas Nilsson E, Buzorius G, Rannik Ü, Dal Maso M, Seidl W, Hoffman T, Janson R, Hansson H-C, Viisanen Y, Laaksonen A, O'Dowd CD. 2001. Overview of the international project on biogenic aerosol formation in the boreal forest (BIOFOR). TELLUS. SER B. CHEMICAL AND PHYSICAL METEOROLOGY 53B: 324-343. 2001

Joutsensaari J, Vaattovaara P, Vesterinen M, Hämeri K, Laaksonen A. 2001. A novel tandem differential mobility analyzer with organic vapor treatment of aerosol particles. ATMOSPHERIC CHEMISTRY AND PHYSICS 1: 51-60. 2001

Joutsensaari J, Vaattovaara P, Laaksonen A. 2001. Construction of organic tandem differential mobility analyzer, Abstracts of the European Aerosol Conference 2001, EAC 2001 European Aerosol Conference 2001. Journal of Aerosol Science. Supplement. S911-S912. 2001

Mattila T, Viisanen Y, Kokkola H, Laaksonen A, Kulmala M. 2000. Enhancement of CCN concentration due to aqueous phase sulfate production in polluted air. Teoksessa: (toim.), Abstracts of the 2000 European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. ss. 360-361. 2000

Vehkamäki H, Kulmala M, Timmreck C, Laaksonen A. 2000. Parametrisation of sulphuric acid-water nucleation rates for upper tropospheric and stratospheric conditions, Abstracts of the 2000 European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. 448-449. 2000

Petersen D, Ortner R, Vrtala A, Laaksonen A, Kulmala M, Wagner PE. 2000. The influence of particle solubility on heterogeneous nucleation in binary vapor mixtures: Hale BN, Kulmala M, Nucleation and Atmospheric Aerosols 2000. 15th International Conference.American Institute of Physics. AIP conference proceedings. 135-138. 2000

Napari I, Laaksonen A. 2000. Mutual nucleation enhancement in phase-separating amphiphilic systems. Teoksessa: (toim.), Abstracts of the 2000 European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. ss. 252-253. 2000

Napari I, Laaksonen A, Strey R. 2000. Density-functional studies of amphiphilic binary mixtures: II. Gas-liquid nucleation. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 113 10: 4480-4487. 2000

Napari I, Laaksonen A, Strey R. 2000. Density-functional studies of amphiphilic binary mixtures: I. Phase behavior. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 113 10: 4476-4479. 2000

Nadykto AB, Schukin ER, Kulmala M, Laaksonen A. 2000. On evaporation and condensational growth of a non-spherical particle, Abstracts of the 2000 European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. 803-804. 2000

Nadykto AB, Schukin ER, Kulmala M, Laaksonen A. 2000. Evaporation and condensation rates of a multicomponent droplet in a non-isothermal gas mixture, Abstracts of the 2000 European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. 801-802. 2000

Mäkelä JM, Dal Maso M, Pirjola L, Keronen P, Laakso L, Kulmala M, Laaksonen A. 2000. Characteristics of the atmospheric particle formation events observed at a borel forest site in Southern Finland. BOREAL ENVIRONMENT RESEARCH 5 4: 299-313. 2000

Mäkelä JM, Dal Maso M, Laaksonen A, Pirjola L, Keronen P, Kulmala M. 2000. Characteristics of the three years continuous data on new particle formation events observed at a boreal forest site. Teoksessa: Hale BN, Kulmala M (toim.), Nucleation and Atmospheric Aerosols 2000. 15th International Conference.American Institute of Physics. AIP conference proceedings. ss. 896-899. 2000

Napari I, Laaksonen A. 2000. Surfactant effects and an order-disorder transition in binary gas-liquid nucleation. PHYSICAL REVIEW LETTERS 84 10: 2184-2187. 2000

Laaksonen A. 2000. Application of nucleation theories to atmospheric aerosol formation: Hale BN, Kulmala M, Nucleation and Atmospheric Aerosols 2000. 15th International Conference.American Institute of Physics. AIP conference proceedings. 711-723. 2000

Laasonen K, Wonczak S, Strey R, Laaksonen A. 2000. Molecular dynamics simulations of gas-liquid nucleation of Lennard-Jones fluid JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 113 21: 9741-9747. 2000

Joutsensaari J, Vaattovaara P, Laaksonen A, Väkevä M, Hämeri K. 2000. Organic tandem differential mobility analyzer, Abstracts of the European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. 775-776. 2000

Laaksonen A, Pirjola L, Kulmala M, Wohlfrom K-H, Arnold F, Raes F. 2000. Upper tropospheric SO2 conversion into sulfuric acid aerosols and cloud condensation nuclei. JOURNAL OF GEOPHYSICAL RESEARCH D. 105 1: 1459-1469. 2000

Hämeri K, Mäkelä JM, Aalto PP, Pirjola L, Väkevä M, Koponen IK, Buzorius G, Keronen P, Rannik Ü, Vesala T, Laakso L, Seidl W, Forkel R, Hoffmann T, Spanke J, Nilsson ED, Jansson R, Hansson H-C, O'Dowd C, Becker E, Paatero J, Teinilä K, Hillamo R. 2000. Biogenic aerosol formation in the boreal forest, Abstracts of the 2000 European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. 598-599. 2000

Hämeri K, Väkevä M, Hansson H-C, Laaksonen A. 2000. Hygroscopic growth of ultrafine ammonium sulphate aerosol measured using an ultrafine tandem differential mobility analyzer. JOURNAL OF GEOPHYSICAL RESEARCH D. 105 17: 22,231-22,242. 2000

Hienola J, Kulmala M, Laaksonen A. 2000. Model studies on the effect of nitric acid vapour on cirrus cloud formation: Hale BN, Kulmala M, Nucleation and Atmospheric Aerosols 2000. 15th International Conference.American Institute of Physics. AIP conference proceedings. 654-657. 2000

Kirkby J, Laaksonen A. 2000. Solar variability and clouds: Friis-Christensen E, Fröhlich C, Haigh JD, Schüssler M, von Steiger R, Solar Variability and Climate. Proceedings of an ISSI Workshop.Kluwer. Space Sciences Series of ISSI. 397-409. 2000

Kulmala M, Hämeri K, Mäkelä JM, Aalto PP, Pirjola L, Väkevä M, Nilsson ED, Koponen IK, Buzorius G, Keronen P, Rannik Ü, Laakso L, Vesala T, Bigg K, Seidl W, Forkel R, Hoffmann T, Spanke J, Janson R, Shimmo M, Hansson H-C, O'Dowd C, Becker E. 2000. Biogenic aerosol formation in the boreal forest. BOREAL ENVIRONMENT RESEARCH 5 4: 281-297. 2000

Kulmala M, Korhonen P, Laaksonen A, Viisanen Y, McGraw R, Seinfeld JH. 2000. Ternary nucleation of H2SO4, NH3 and H2O. Teoksessa: Hale BN, Kulmala M (toim.), Nucleation and Atmospheric Aerosols 2000. 15th International Conference.American Institute of Physics. AIP conference proceedings. ss. 111-114. 2000

Kulmala M, Korhonen P, Viisanen Y, Laaksonen A. 2000. The homogeneous heteromolecular nucleation of sulphuric acid, water and ammonia in the coastal environment, Abstracts of the 2000 European Aerosol Conference.Pergamon. Journal of Aerosol Science. Supplement. 652-653. 2000

Kulmala M, Vesala T, Laaksonen A. 2000. Physical chemistry of aerosol formation. Teoksessa: Spurny KR (toim.), Aerosol Chemical Processes in the Environment.Lewis Publishers. ss. 23-46. 2000

Hienola J, Kulmala M, Laaksonen A. 1999. Influence of nitric acid vapor on cloud particle formation at low temperatures in troposphere. JOURNAL OF AEROSOL SCIENCE. SUPPLEMENT 30 1: S23-S24. 1999

Hämeri K, Väkevä M, Laaksonen A. 1999. Hygroscopic properties of ultrafine inorganic salt particles JOURNAL OF AEROSOL SCIENCE. SUPPLEMENT 30 1: S15-S16. 1999

Korhonen P, Kulmala M, Laaksonen A, Viisanen Y, McGraw R, Seinfeld JH. 1999. Ternary nucleation of H2SO4, NH3, and H2O in the atmosphere JOURNAL OF GEOPHYSICAL RESEARCH D. 104 D21: 26,349-26,353. 1999

Laaksonen A, McGraw R, Vehkamäki H. 1999. Liquid-drop formalism and free-energy surfaces in binary homogeneous nucleation theory. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 111 5: 2019-2027. 1999

Napari I, Laaksonen A, Talanquer V, Oxtoby DW. 1999. A density functional study of liquid-liquid interfaces in partially miscible systems. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 110 12: 5906-5912. 1999

Napari I, Laaksonen A. 1999. A density functional approach to nucleation in partially miscible binary mixtures JOURNAL OF AEROSOL SCIENCE. SUPPLEMENT 30 1: S33-S34. 1999

Napari I, Laaksonen A. 1999. Gas-liquid nucleation in partially miscible systems: free-energy surfaces and structures of nuclei from density functional calculations. JOURNAL OF CHEMICAL PHYSICS (NEW YORK) 111 12: 5485-5490. 1999

Petersen D, Ortner R, Vrtala A, Laaksonen A, Kulmala M, Wagner PE. 1999. Applicability and limitations of the capillarity approximation for modeling heterogeneous nucleation in binary vapor mixtures. JOURNAL OF AEROSOL SCIENCE. SUPPLEMENT 30 1: S35-S36. 1999

Pirjola L, Kulmala M, Laaksonen A, Wohlfrom K-H, Arnold F, Raes F. 1999. Potential of upper tropospheric SO2 conversion into sulphuric acid aerosols and cloud condensation nuclei. JOURNAL OF AEROSOL SCIENCE. SUPPLEMENT 30 1: S875-S876. 1999

Kulmala M, Toivonen A, Mäkelä JM, Laaksonen A. 1998. Analysis of the growth of nucleation mode particles observed in Boreal forest. TELLUS. SER B. CHEMICAL AND PHYSICAL METEOROLOGY 50: 449-462. 1998

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