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Dall'Osto, M. (author), Beddows, D.C.S. (author), Asmi, A. (author), Poulain, L. (author), Hao, L. (author), Freney, E. (author), Allan, J.D. (author), Canagaratna, M. (author), Crippa, M. (author), Bianchi, F. (author), De Leeuw, G. (author), Eriksson, A. (author), Swietlicki, E. (author), Hansson, H.C. (author), Henzing, J.S. (author), Granier, C. (author), Zemankova, K. (author), Laj, P. (author), Onasch, T. (author), Prevot, A. (author), Putaud, J.P. (author), Sellegri, K. (author), Vidal, M. (author), Virtanen, A. (author), Simo, R. (author), Worsnop, D. (author), O'Dowd, C. (author), Kulmala, M. (author), Harrison, R.M. (author)The formation of new atmospheric particles involves an initial step forming stable clusters less than a nanometre in size (<~1 nm), followed by growth into quasi-stable aerosol particles a few nanometres (~1-10 nm) and larger (>~10 nm). Although at times, the same species can be responsible for both processes, it is thought that more generally...article 2018
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Mann, G.W. (author), Carslaw, K.S. (author), Reddington, C.L. (author), Pringle, K.J. (author), Schulz, M. (author), Asmi, A. (author), Spracklen, D.V. (author), Ridley, D.A. (author), Woodhouse, M.T. (author), Lee, L.A. (author), Zhang, K. (author), Ghan, S.J. (author), Easter, R.C. (author), Liu, X. (author), Stier, P. (author), Lee, Y.H. (author), Adams, P.J. (author), Tost, H. (author), Lelieveld, J. (author), Bauer, S.E. (author), Tsigaridis, K. (author), van Noije, T.P.C. (author), Strunk, A. (author), Vignati, E. (author), Bellouin, N. (author), Dalvi, M. (author), Johnson, C.E. (author), Bergman, T. (author), Kokkola, H. (author), Von Salzen, K. (author), Yu, F. (author), Luo, G. (author), Petzold, A. (author), Heintzenberg, J. (author), Clarke, A. (author), Ogren, J.A. (author), Gras, J. (author), Baltensperger, U. (author), Kaminski, U. (author), Jennings, S.G. (author), O'Dowd, C.D. (author), Harrison, R.M. (author), Beddows, D.C.S. (author), Kulmala, M. (author), Viisanen, Y. (author), Ulevicius, V. (author), Mihalopoulos, N. (author), Zdimal, V. (author), Fiebig, M. (author), Hansson, H.C. (author), Swietlicki, E. (author), Henzing, J.S. (author)Many of the next generation of global climate models will include aerosol schemes which explicitly simulate the microphysical processes that determine the particle size distribution. These models enable aerosol optical properties and cloud condensation nuclei (CCN) concentrations to be determined by fundamental aerosol processes, which should...article 2014
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Beddows, D.C.S. (author), Dall'Osto, M. (author), Harrison, R.M. (author), Kulmala, M. (author), Asmi, A. (author), Wiedensohler, A. (author), Laj, P. (author), Fjaeraa, A.M. (author), Sellegri, K. (author), Birmili, W. (author), Bukowiecki, N. (author), Weingartner, E. (author), Baltensperger, U. (author), Zdimal, V. (author), Zikova, N. (author), Putaud, J.P. (author), Marinoni, A. (author), Tunved, P. (author), Hansson, H.C. (author), Fiebig, M. (author), Kivekäs, N. (author), Swietlicki, E. (author), Lihavainen, H. (author), Asmi, E. (author), Ulevicius, V. (author), Aalto, P.P. (author), Mihalopoulos, N. (author), Kalivitis, N. (author), Kalapov, I. (author), Kiss, G. (author), de Leeuw, G. (author), Henzing, B. (author), O'Dowd, C. (author), Jennings, S.G. (author), Flentje, H. (author), Meinhardt, F. (author), Ries, L. (author), van der Gon, H.A.C. (author), Visschedijk, A.J.H. (author)Clusteranalysis of particle number size distributions frombackground sites across Europeis presented. This generated a total of nine clusters of particle size distributions which could be further combined into two main groups, namely: a south-to-north category (four clusters) and a west-to-east category (five clusters). The first group was...article 2014
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Paasonen, P. (author), Asmi, A. (author), Petäjä, T. (author), Kajos, M.K. (author), Äijälä, M. (author), Junninen, H. (author), Holst, T. (author), Abbatt, J.P.D. (author), Arneth, A. (author), Birmili, W. (author), Denier van der Gon, H.A.C. (author), Hamed, A. (author), Hoffer, A. (author), Laakso, L. (author), Laaksonen, A. (author), Richard Leaitch, W. (author), Plass-Dülmer, C. (author), Pryor, S.C. (author), Räisänen, P. (author), Swietlicki, E. (author), Wiedensohler, A. (author), Worsnop, D.R. (author), Kerminen, V.-M. (author), Kulmala, M. (author)Atmospheric aerosol particles influence the climate system directly by scattering and absorbing solar radiation, and indirectly by acting as cloud condensation nuclei. Apart from black carbon aerosol, aerosols cause a negative radiative forcing at the top of the atmosphere and substantially mitigate the warming caused by greenhouse gases. In the...article 2013
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Mann, G.W. (author), Carslaw, K.S. (author), Reddington, C.L. (author), Pringle, K.J. (author), Schulz, M. (author), Asmi, A. (author), Spracklen, D.V. (author), Ridley, D.A. (author), Woodhouse, M.T. (author), Lee, L.A. (author), Zhang, K. (author), Ghan, S.J. (author), Easter, R.C. (author), Liu, X. (author), Stier, P. (author), Lee, Y.H. (author), Adams, P.J. (author), Tost, H. (author), Lelieveld, J. (author), Bauer, S.E., (author), Tsigaridis, K. (author), van Noije, T.P.C. (author), Strunk, A. (author), Vignati, E. (author), Bellouin, N. (author), Dalvi, M. (author), Johnson, C.E. (author), Bergman, T. (author), Kokkola, H. (author), von Salzen, K. (author), Yu, F. (author), Luo, G. (author), Petzold, A. (author), Heintzenberg, J. (author), Clarke, A. (author), Ogren, J.A. (author), Gras, J. (author), Baltensperger, U. (author), Kaminski, U. (author), Jennings, S.G. (author), O'Dowd, C.D. (author), Harrison, R.M. (author), Beddows, D.C.S. (author), Kulmala, M. (author), Viisanen, Y. (author), Ulevicius, V. (author), Mihalopoulos, N. (author), Zdimal, V. (author), Fiebig, M. (author), Hansson, H.C. (author), Swietlicki, E. (author), Henzing, J.S. (author)This study examines the global variation in particle size distribution simulated by twelve global aerosol microphysics models to quantify model diversity and to identify any common biases against observations. Evaluation against size distribution measurements from a new European network of aerosol supersites shows that the mean model agrees...article 2013
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Beddows, D.C.S. (author), Dall'Osto, M. (author), Harrison, R.M. (author), Kulmala, M. (author), Asmi, A. (author), Wiedensohler, A. (author), Laj, P. (author), Fjaeraa, A.M. (author), Sellegri, K. (author), Birmili, W. (author), Bukowiecki, N. (author), Weingartner, E. (author), Baltensperger, U. (author), Zdimal, V. (author), Zikova, N. (author), Putaud, J.P. (author), Marinoni, A. (author), Tunved, P. (author), Hansson, H.C. (author), Fiebig, M. (author), Kivekäs, N. (author), Swietlicki, E. (author), Lihavainen, H. (author), Asmi, E. (author), Ulevicius, V. (author), Aalto, P.P. (author), Mihalopoulos, N. (author), Kalivitis, N. (author), Kalapov, I. (author), Kiss, G. (author), de Leeuw, G. (author), Henzing, J.S. (author), O'Dowd, C. (author), G. Jennings, S. (author), Flentje, H. (author), Meinhardt, F. (author), Ries, L. (author), Denier van der Gon, H.A.C. (author), Visschedijk, A.J.H (author)Cluster analysis of particle number size distributions from background sites across Europe is presented. The clustering analysis greatly simplifies the complex dataset and allows a description of aerosol aging processes, which reflects the longer-term average development of particle number size distributions as air masses advect across Europe....article 2013
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Asmi, A. (author), Wiedensohler, A. (author), Laj, P. (author), Fjaeraa, A.-M. (author), Sellegri, K. (author), Birmili, W. (author), Weingartner, E. (author), Baltensperger, U. (author), Zdimal, V. (author), Zikova, N. (author), Putaud, J.-P. (author), Marinoni, A. (author), Tunved, P. (author), Hansson, H.-C. (author), Fiebig, M. (author), Kivekäs, N. (author), Lihavainen, H. (author), Asmi, E. (author), Ulevicius, V. (author), Aalto, P.P. (author), Swietlicki, E. (author), Kristensson, A. (author), Mihalopoulos, N. (author), Kalivitis, N. (author), Kalapov, I. (author), Kiss, G. (author), de Leeuw, G. (author), Henzing, B. (author), Harrison, R.M. (author), Beddows, D. (author), O'Dowd, C. (author), Jennings, S.G. (author), Flentje, H. (author), Weinhold, K. (author), Meinhardt, F. (author), Ries, L. (author), Kulmala, M. (author)Two years of harmonized aerosol number size distribution data from 24 European field monitoring sites have been analysed. The results give a comprehensive overview of the European near surface aerosol particle number concentrations and number size distributions between 30 and 500 nm of dry particle diameter. Spatial and temporal distribution of...article 2011
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Asmi, A. (author), Wiedensohler, A. (author), Laj, P. (author), Fjaeraa, A.-M. (author), Sellegri, K. (author), Birmili, W. (author), Weingartner, E. (author), Baltensperger, U. (author), Zdimal, V. (author), Zikova, N. (author), Putaud, J.-P. (author), Marinoni, A. (author), Tunved, P. (author), Hansson, H.-C. (author), Fiebig, M. (author), Kivekäs, N. (author), Lihavainen, H. (author), Asmi, E. (author), Ulevicius, V. (author), Aalto, P.P. (author), Swietlicki, E. (author), Kristensson, A. (author), Mihalopoulos, N. (author), Kalivitis, N. (author), Kalapov, I. (author), Kiss, G. (author), de Leeuw, G. (author), Henzing, B. (author), Harrison, R.M. (author), Beddows, D. (author), O'Dowd, C. (author), Jennings, S.G. (author), Flentje, H. (author), Weinhold, K. (author), Meinhardt, F. (author), Ries, L. (author), Kulmala, M. (author)Two years of harmonized aerosol number size distribution data from 24 European field monitoring sites have been analysed. The results give a comprehensive overview of the European near surface aerosol particle number concentrations and number size distributions between 30 and 500 nm of dry particle diameter. Spatial and temporal distribution of...article 2011
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Denier van der Gon, H.A.C. (author), Knote, C. (author), Brunner, D. (author), Vogel, H. (author), Allan, J. (author), Asmi, A. (author), Aijala, M. (author), Carbone, S. (author), Jiminez, J.L. (author), Kiendler-Scharr, A. (author), Mohr, C. (author), Poulain, L. (author), Prevot, A.S.H. (author), Swietlicki, E. (author), Vogel, B. (author)Abstract. The online-coupled, regional chemistry transport model COSMO-ART is evaluated for periods in all seasons against several measurement datasets to assess its ability to represent gaseous pollutants and ambient aerosol characteristics over the European domain. Measurements used in the comparison include long-term station observations,...article 2011
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Kulmala, M. (author), Asmi, A. (author), Lappalainen, H.K. (author), Baltensperger, U. (author), Brenguier, J.-L. (author), Facchini, M.C. (author), Hansson, H.-C. (author), Hov, Ø. (author), O'Dowd, C.D. (author), Pöschl, U. (author), Wiedensohler, A. (author), Boers, R. (author), Boucher, O. (author), de Leeuw, G. (author), Denier van der Gon, H.A.C. (author), Feichter, J. (author), Krejci, R. (author), Laj, P. (author), Lihavainen, H. (author), Lohmann, U. (author), McFiggans, G. (author), Mentel, T. (author), Pilinis, C. (author), Riipinen, I. (author), Schulz, M. (author), Stohl, A. (author), Swietlicki, E. (author), Vignati, E. (author), Alves, C. (author), Amann, M. (author), Ammann, M. (author), Arabas, S. (author), Artaxo, P. (author), Baars, H. (author), Beddows, D.C.S. (author), Bergström, R. (author), Beukes, J.P. (author), Bilde, M. (author), Burkhart, J.F. (author), Canonaco, F. (author), Clegg, S.L. (author), Coe, H. (author), Crumeyrolle, S. (author), D'Anna, B. (author), Decesari, S. (author), Gilardoni, S. (author), Fischer, M. (author), Fjaeraa, A.M. (author), Fountoukis, C. (author), George, C. (author), Gomes, L. (author), Halloran, P. (author), Hamburger, T. (author), Harrison, R.M. (author), Herrmann, H. (author), Hoffmann, T. (author), Hoose, C. (author), Hu, M. (author), Hyvärinen, A. (author), Hõrrak, U. (author), Iinuma, Y. (author), Iversen, T. (author), Josipovic, M. (author), Kanakidou, M. (author), Kiendler-Scharr, A. (author), Kirkevåg, A. (author), Kiss, G. (author), Klimont, Z. (author), Kolmonen, P. (author), Komppula, M. (author), Kristjánsson, J.-E. (author), Laakso, L. (author), Laaksonen, A. (author), Labonnote, L. (author), Lanz, V.A. (author), Lehtinen, K.E.J. (author), Rizzo, L.V. (author), Makkonen, R. (author), Manninen, H.E. (author), McMeeking, G. (author), Merikanto, J. (author), Minikin, A. (author), Mirme, S. (author), Morgan, W.T. (author), Nemitz, E. (author), O'Donnell, D. (author), Panwar, T.S. (author), Pawlowska, H. (author), Petzold, A. (author), Pienaar, J.J. (author), Pio, C. (author), Plass-Duelmer, C. (author), Prévôt, A.S.H. (author), Pryor, S. (author), Reddington, C.L. (author), Roberts, G. (author), Rosenfeld, D. (author), Schwarz, J. (author), Seland, O. (author), Sellegri, K. (author), Shen, X.J. (author), Shiraiwa, M. (author), Siebert, H. (author), Sierau, B. (author), Simpson, D. (author), Sun, J.Y. (author), Topping, D. (author), Tunved, P. (author), Vaattovaara, P. (author), Vakkari, V. (author), Veefkind, J.P. (author), Visschedijk, A. (author), Vuollekoski, H. (author), Vuolo, R. (author), Wehner, B. (author), Wildt, J. (author), Woodward, S. (author), Worsnop, D.R. (author), van Zadelhoff, G.J. (author), Zardini, A.A. (author), Zhang, K. (author), van Zyl, P.G. (author), Kerminen, V.-M. (author), Carslaw, K.S. (author), Pandis, S.N. (author)In this paper we describe and summarize the main achievements of the European Aerosol Cloud Climate and Air Quality Interactions project (EUCAARI). EUCAARI started on 1 January 2007 and ended on 31 December 2010 leaving a rich legacy including: (a) a comprehensive database with a year of observations of the physical, chemical and optical...article 2011