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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
document
Pandolfi, M. (author), Alados-Arboledas, L. (author), Alastuey, A. (author), Andrade, M. (author), Angelov, C. (author), Artiñano, B. (author), Backman, J. (author), Baltensperger, U. (author), Bonasoni, P. (author), Bukowiecki, N. (author), Collaud Coen, M. (author), Conil, S. (author), Coz, E. (author), Crenn, V. (author), Dudoitis, V. (author), Ealo, M. (author), Eleftheriadis, K. (author), Favez, O. (author), Fetfatzis, P. (author), Fiebig, M. (author), Flentje, H. (author), Ginot, P. (author), Gysel, M. (author), Henzing, B. (author), Hoffer, A. (author), Holubova Smejkalova, A. (author), Kalapov, I. (author), Kalivitis, N. (author), Kouvarakis, G. (author), Kristensson, A. (author), Kulmala, M. (author), Lihavainen, H. (author), Lunder, C. (author), Luoma, K. (author), Lyamani, H. (author), Marinoni, A. (author), Mihalopoulos, N. (author), Moerman, M. (author), Nicolas, J. (author), O'Dowd, C. (author), Petäjä, T. (author), Petit, J.E. (author), Marc Pichon, J. (author), Prokopciuk, N. (author), Putaud, J.P. (author), Rodríguez, S. (author), Sciare, J. (author), Sellegri, K. (author), Swietlicki, E. (author), Titos, G. (author), Tuch, T. (author), Tunved, P. (author), Ulevicius, V. (author), Vaishya, A. (author), Vana, M. (author), Virkkula, A. (author), Vratolis, S. (author), Weingartner, E. (author), Wiedensohler, A. (author), Laj, P. (author)
This paper presents the light-scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, which are located mainly in Europe. The data include particle light scattering (σsp) and hemispheric backscattering (σbsp) coefficients, scattering Ångström exponent (SAE), backscatter fraction (BF) and...
article 2018
document
Schmale, J. (author), Henning, S. (author), Decesari, S. (author), Henzing, B. (author), Keskinen, H. (author), Sellegri, K. (author), Ovadnevaite, J. (author), Pöhlker, M. (author), Brito, J. (author), Bougiatioti, A. (author), Kristensson, A. (author), Kalivitis, N. (author), Stavroulas, I. (author), Carbone, S. (author), Jefferson, A. (author), Park, M. (author), Schlag, P. (author), Iwamoto, Y. (author), Aalto, P. (author), Äijälä, M. (author), Bukowiecki, N. (author), Ehn, M. (author), Fröhlich, R. (author), Frumau, A. (author), Herrmann, E. (author), Herrmann, H. (author), Holzinger, R. (author), Kos, G. (author), Kulmala, M. (author), Mihalopoulos, N. (author), Nenes, A. (author), O'Dowd, C. (author), Petäjä, T. (author), Picard, D. (author), Pöhlker, C. (author), Pöschl, U. (author), Poulain, L. (author), Swietlicki, E. (author), Andreae, M. (author), Artaxo, P. (author), Wiedensohler, A. (author), Ogren, J. (author), Matsuki, A. (author), Soo Yum, S. (author), Stratmann, F. (author), Baltensperger, U. (author), Gysel, M. (author)
Aerosol-cloud interactions (ACI) constitute the single largest uncertainty in anthropogenic radiative forcing. To reduce the uncertainties and gain more confidence in the simulation of ACI, models need to be evaluated against observations, in particular against measurements of cloud condensation nuclei (CCN). Here we present a data set - ready...
article 2018
document
Xausa, F. (author), Paasonen, P. (author), Makkonen, R. (author), Arshinov, M. (author), Ding, A. (author), Denier van der Gon, H. (author), Kerminen, V.M. (author), Kulmala, M. (author)
Climate models are important tools that are used for generating climate change projections, in which aerosol-climate interactions are one of the main sources of uncertainties. In order to quantify aerosol-radiation and aerosol-cloud interactions, detailed input of anthropogenic aerosol number emissions is necessary. However, the anthropogenic...
article 2018
document
Schmale, J. (author), Henning, S. (author), Henzing, B. (author), Keskinen, H. (author), Sellegri, K. (author), Ovadnevaite, J. (author), Bougiatioti, A. (author), Kalivitis, N. (author), Stavroulas, I. (author), Jefferson, A. (author), Park, M. (author), Schlag, P. (author), Kristensson, A. (author), Iwamoto, Y. (author), Pringle, K. (author), Reddington, C. (author), Aalto, P. (author), Äijälä, M. (author), Baltensperger, U. (author), Bialek, J. (author), Birmili, W. (author), Bukowiecki, N. (author), Ehn, M. (author), Fjæraa, A.M. (author), Fiebig, M. (author), Frank, G. (author), Fröhlich, R. (author), Frumau, A. (author), Furuya, M. (author), Hammer, E. (author), Heikkinen, L. (author), Herrmann, E. (author), Holzinger, R. (author), Hyono, H. (author), Kanakidou, M. (author), Kiendler-Scharr, A. (author), Kinouchi, K. (author), Kos, G. (author), Kulmala, M. (author), Mihalopoulos, N. (author), Motos, G. (author), Nenes, A. (author), O'Dowd, C. (author), Paramonov, M. (author), Petäjä, T. (author), Picard, D. (author), Poulain, L. (author), Prévôt, A.S.H. (author), Slowik, J. (author), Sonntag, A. (author), Swietlicki, E. (author), Svenningsson, B. (author), Tsurumaru, H. (author), Wiedensohler, A. (author), Wittbom, C. (author), Ogren, J.A. (author), Matsuki, A. (author), Yum, S.S. (author), Myhre, C.L. (author), Carslaw, K. (author), Stratmann, F. (author), Gysel, M. (author)
Cloud condensation nuclei (CCN) number concentrations alongside with submicrometer particle number size distributions and particle chemical composition have been measured at atmospheric observatories of the Aerosols, Clouds, and Trace gases Research InfraStructure (ACTRIS) as well as other international sites over multiple years. Here,...
article 2017
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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
document
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
document
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
document
Laakso, L. (author), Vakkari, V. (author), Virkkula, A. (author), Laakso, H. (author), Backman, J. (author), Kulmala, M. (author), Beukes, J.P. (author), van Zyl, P.G. (author), Tiitta, P. (author), Josipovic, M. (author), Pienaar, J.J. (author), Chiloane, K. (author), Gilardoni, S. (author), Vignati, E. (author), Wiedensohler, A. (author), Tuch, T. (author), Birmili, W. (author), Piketh, S. (author), Collett, K. (author), Fourie, G.D. (author), Komppula, M. (author), Lihavainen, H. (author), de Leeuw, G. (author), Kerminen, V.-M. (author)
In this paper we introduce new in situ observations of atmospheric aerosols, especially chemical composition, physical and optical properties, on the eastern brink of the heavily polluted Highveld area in South Africa. During the observation period between 11 February 2009 and 31 January 2011, the mean particle number concentration (size range...
article 2012
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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
document
Reddington, C.L. (author), Carslaw, K.S. (author), Spracklen, D.V. (author), Frontoso, M.G. (author), Collins, L. (author), Merikanto, J. (author), Minikin, A. (author), Hamburger, T. (author), Coe, H. (author), Kulmala, M. (author), Aalto, P. (author), Flentje, H. (author), Plass-Dülmer, C. (author), Birmili, W. (author), Wiedensohler, A. (author), Wehner, B. (author), Tuch, T. (author), Sonntag, A. (author), O'Dowd, C.D. (author), Jennings, S.G. (author), Dupuy, R. (author), Baltensperger, U. (author), Weingartner, E. (author), Hansson, H.-C. (author), Tunved, P. (author), Laj, P. (author), Sellegri, K. (author), Boulon, J. (author), Putaud, J.-P. (author), Gruening, C. (author), Swietlicki, E. (author), Roldin, P. (author), Henzing, J.S. (author), Moerman, M. (author), Mihalopoulos, N. (author), Kouvarakis, G. (author), Ždímal, V. (author), Zíková, N. (author), Marinoni, A. (author), Bonasoni, P. (author), Duchi, R. (author)
It is important to understand the relative contribution of primary and secondary particles to regional and global aerosol so that models can attribute aerosol radiative forcing to different sources. In large-scale models, there is considerable uncertainty associated with treatments of particle formation (nucleation) in the boundary layer (BL)...
article 2011
document
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
document
Laakso, L. (author), Vakkari, V. (author), Laakso, H. (author), Virkkula, A. (author), Kulmala, M. (author), Beukes, J.P. (author), van Zyl, P.G. (author), Pienaar, J.J. (author), Chiloane, K. (author), Gilardoni, S. (author), Vignati, E. (author), Wiedensohler, A. (author), Tuch, T. (author), Birmili, W. (author), Piketh, S. (author), Collett, K. (author), Fourie, G.D. (author), Komppula, M. (author), Lihavainen, H. (author), de Leeuw, G. (author), Kerminen, V.-M. (author), TNO Bouw en Ondergrond (author)
In this paper, new long-term measurements of chemical composition and physical properties of atmospheric aerosols carried out on the eastern brink of the heavily polluted Highveld area in South Africa are introduced. As expected, a high variability of aerosol properties was observed. Optical properties of aerosol particles were found to be...
article 2010
document
Manninen, H.E. (author), Nieminen, T. (author), Asmi, E. (author), Gagné, S. (author), Häkkinen, S. (author), Lehtipalo, K. (author), Aalto, P. (author), Vana, M. (author), Mirme, A. (author), Mirme, S. (author), Hõrrak, U. (author), Plass-Dülmer, C. (author), Stange, G. (author), Kiss, G. (author), Hoffer, A. (author), Töro, N. (author), Moerman, M. (author), Henzing, B. (author), de Leeuw, G. (author), Brinkenberg, M. (author), Kouvarakis, G.N. (author), Bougiatioti, A. (author), Mihalopoulos, N. (author), O'Dowd, C. (author), Ceburnis, D. (author), Arneth, A. (author), Svenningsson, B. (author), Swietlicki, E. (author), Tarozzi, L. (author), Decesari, S. (author), Facchini, M.C. (author), Birmili, W. (author), Sonntag, A. (author), Wiedensohler, A. (author), Boulon, J. (author), Sellegri, K. (author), Laj, P. (author), Gysel, M. (author), Bukowiecki, N. (author), Weingartner, E. (author), Wehrle, G. (author), Laaksonen, A. (author), Hamed, A. (author), Joutsensaari, J. (author), Petäjä, T. (author), Kerminen, V.-M. (author), Kulmala, M. (author), TNO Bouw en Ondergrond (author)
We present comprehensive results on continuous atmospheric cluster and particle measurements in the size range ∼1-42 nm within the European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) project. We focused on characterizing the spatial and temporal variation of new particle formation events and relevant...
article 2010
document
Verheggen, B. (author), Duplissy, J. (author), Enghoff, M.B. (author), Aplin, K.L. (author), Arnold, F. (author), Aufmhoff, H. (author), Avngaard, M. (author), Baltensperger, U. (author), Bondo, T. (author), Bingham, R. (author), Carslaw, K. (author), Curtius, J. (author), David, A. (author), Fastrup, B. (author), Gagne, S. (author), Hahn, F. (author), Kirkby, J. (author), Onnela, A. (author), Veenhof, R. (author), Wilhelmsson, M. (author), Harrison, R.G. (author), Kellett, B. (author), Lockwood, M. (author), Kulmala, M. (author), Laakso, L. (author), Nieminen, T. (author), Sipila, M. (author), Laaksonen, A. (author), Lillestol, E. (author), Makela, J. (author), Makhmutov, V. (author), Stozhkov, Y. (author), Marsh, N.D. (author), Pedersen, J.O.P. (author), Polny, J. (author), Svensmark, H. (author), Svensmark, J. (author), Pedersen, E. (author), Reichl, U. (author), Seinfeld, J.H. (author), Stratmann, F. (author), Wex, H. (author), Wehrle, G. (author), Weingartner, E. (author), Viisanen, Y. (author), Wagner, P.E. (author), Winkler, P.M. (author)
During a 4-week run in October–November 2006, a pilot experiment was performed at the CERN Proton Synchrotron in preparation for the Cosmics Leaving Outdoor Droplets (CLOUD) experiment, whose aim is to study the possible influence of cosmic rays on clouds. The purpose of the pilot experiment was firstly to carry out exploratory measurements of...
article 2010
document
Verheggen, B. (author), Duplissy, J. (author), Baltensperger, U. (author), Carslaw, K. (author), Kulmala, M. (author), Weingartner, E. (author), Metzger, A. (author), Dommen, J. (author), Prevot, A.S.H. (author), Riipinen, I. (author), Spracklen, D.V. (author)
New particle formation in the atmosphere is an important parameter in governing the radiative forcing of atmospheric aerosols. However, detailed nucleation mechanisms remain ambiguous, as laboratory data have so far not been successful in explaining atmospheric nucleation.We investigated the formation of new particles in a smog chamber...
article 2010
document
Rinaldi, M. (author), Facchini, M.C. (author), Decesari, S. (author), Carbone, C. (author), Finessi, E. (author), Mircea, M. (author), Fuzzi, S. (author), Ceburnis, D. (author), Ehn, M. (author), Kulmala, M. (author), de Leeuw, G. (author), O'Dowd, C.D. (author), TNO Bouw en Ondergrond (author)
A unique opportunity arose during the MAP project to compare open ocean aerosol measurements with those undertaken at the Mace Head Global Atmosphere Watch Station, a station used for decades for aerosol process research and long-term monitoring. The objective of the present study is to demonstrate that the key aerosol features and processes...
article 2009
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