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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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Genberg, J. (author), Denier van der Gon, H.A.C. (author), Simpson, D. (author), Swietlicki, E. (author), Areskoug, H. (author), Beddows, D. (author), Ceburnis, D. (author), Fiebig, M. (author), Hansson, H.C. (author), Harrison, R.M. (author), Jennings, S.G. (author), Saarikoski, S. (author), Spindler, G. (author), Visschedijk, A.J.H. (author), Wiedensohler, A. (author), Yttri, K.E. (author), Bergström, R. (author)The atmospheric concentration of elemental carbon (EC) in Europe during the six-year period 2005-2010 has been simulated with the EMEP MSC-W model. The model bias compared to EC measurements was less than 20% for most of the examined sites. The model results suggest that fossil fuel combustion is the dominant source of EC in most of Europe but...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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Wiedensohler, A. (author), Birmili, W. (author), Nowak, A. (author), Sonntag, A. (author), Weinhold, K. (author), Merkel, M. (author), Wehner, B. (author), Tuch, T. (author), Pfeifer, S. (author), Fiebig, M. (author), Fjäraa, A.M. (author), Asmi, E. (author), Sellegri, K. (author), Depuy, R. (author), Venzac, H. (author), Villani, P. (author), Laj, P. (author), Aalto, P. (author), Ogren, J.A. (author), Swietlicki, E. (author), Williams, P. (author), Roldin, P. (author), Quincey, P. (author), Hüglin, C. (author), Fierz-Schmidhauser, R. (author), Gysel, M. (author), Weingartner, E. (author), Riccobono, F. (author), Santos, S. (author), Grüning, C. (author), Faloon, K. (author), Beddows, D. (author), Harrison, R. (author), Monahan, C. (author), Jennings, S.G. (author), O'Dowd, C.D. (author), Marinoni, A. (author), Horn, H.-G. (author), Keck, L. (author), Jiang, J. (author), Scheckman, J. (author), McMurry, P.H. (author), Deng, Z. (author), Zhao, C.S. (author), Moerman, M. (author), Henzing, B. (author), de Leeuw, G. (author), Löschau, G. (author), Bastian, S. (author)Mobility particle size spectrometers often referred to as DMPS (Differential Mobility Particle Sizers) or SMPS (Scanning Mobility Particle Sizers) have found a wide range of applications in atmospheric aerosol research. However, comparability of measurements conducted world-wide is hampered by lack of generally accepted technical standards and...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
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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
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TNO Bouw en Ondergrond (author), Collaud Coen, M. (author), Weingartner, E. (author), Apituley, A. (author), Ceburnis, D. (author), Fierz-Schmidhauser, R. (author), Flentje, H. (author), Henzing, J.S. (author), Jennings, S.G. (author), Moerman, M. (author), Petzold, A. (author), Schmid, O. (author), Baltensperger, U. (author)Obtaining a good description of aerosol optical properties for a physically and chemically complex evolving aerosol is computationally very expensive at present. The goal of this work is to propose a new numerical module computing the optical properties for 5 complex aerosol particles at low numerical cost so that it can be implemented in...article 2010
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- TNO Bouw en Ondergrond (author), Collaud Coen, M. (author), Weingartner, E. (author), Apituley, A. (author), Ceburnis, D. (author), Flentje, H. (author), Henzing, J.S. (author), Jennings, S.G. (author), Moerman, M. (author), Petzold, A. (author), Schmidhauser, R. (author), Schmid, O. (author), Baltensperger, U. (author) article 2009
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TNO Defensie en Veiligheid (author), Heard, D.E. (author), Read, K.A. (author), Methven, J. (author), Al-Haider, S. (author), Bloss, W.J. (author), Johnson, G.P. (author), Pilling, M.J. (author), Seakins, P.W. (author), Smith, S.C. (author), Sommariva, R. (author), Stanton, J.C. (author), Still, T.J. (author), Ingham, T. (author), Brooks, B. (author), de Leeuw, G. (author), Jackson, A.V. (author), McQuaid, J.B. (author), Morgan, R. (author), Smith, M.H. (author), Carpenter, L.J. (author), Carslaw, N. (author), Hamilton, J. (author), Hopkins, J.R. (author), Lee, J.D. (author), Lewis, A.C. (author), Purvis, R.M. (author), Wevill, D.J. (author), Brough, N. (author), Green, T. (author), Mills, G. (author), Penkett, S.A. (author), Plane, J.M.C. (author), Saiz-Lopez, A. (author), Worten, D. (author), Monks, P.S. (author), Fleming, Z. (author), Rickard, A.R. (author), Alfarra, M.R. (author), Allan, J.D. (author), Bower, K. (author), Coe, H. (author), Cubison, M. (author), Flynn, M. (author), McFiggans, G. (author), Gallagher, M. (author), Norton, E.G. (author), O'Dowd, C.D. (author), Shillito, J. (author), Topping, D. (author), Vaughan, G. (author), Williams, P. (author), Bitter, M. (author), Ball, S.M. (author), Jones, R.L. (author), Povey, I.M. (author), O'Doherty, S. (author), Simmonds, P.G. (author), Allen, A. (author), Kinnersley, R.P. (author), Beddows, D.C.S. (author), Dall'Osto, M. (author), Harrison, R.M. (author), Donovan, R.J. (author), Heal, M.R. (author), Jennings, S.G. (author), Noone, C. (author), Spain, G. (author)The North Atlantic Marine Boundary Layer Experiment (NAMBLEX), involving over 50 scientists from 12 institutions, took place at Mace Head, Ireland (53.32° N, 9.90° W), between 23 July and 4 September 2002. A wide range of state-of-the-art instrumentation enabled detailed measurements of the boundary layer structure and atmospheric composition in...article 2006
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TNO Defensie en Veiligheid (author), Sellegri, K. (author), O'Dowd, C.D. (author), Yoon, Y.J. (author), Jennings, S.G. (author), de Leeuw, G. (author)Laboratory experiments have been carried out to elucidate the role of surfactants on the primary marine aerosol production of submicron marine aerosols. A synthetic surfactant SDS was used in conjunction with artificially generated seawater, and the resultant bubble-mediated aerosol produced was observed. At 23°C, the aerosol distribution...article 2006
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TNO Fysisch en Elektronisch Laboratorium (author), O'Dowd, C.D. (author), Haemeri, K. (author), Maekelae, J.M. (author), Pirjola, L. (author), Kulmala, M. (author), Jennings, S.G. (author), Berresheim, H. (author), Hansson, H-C. (author), de Leeuw, G. (author), Kunz, G.J. (author), Allen, A.G. (author), Hewitt, C.N. (author), Jackson, A. (author), Viisanen, Y. (author), Hoffman, T. (author)A dedicated study into the formation of new particles, New Particle Formation and Fate in the Coastal Environment (PARFORCE), was conducted over a period from 1998 to 1999 at the Mace Head Atmospheric Research Station on the western coast of Ireland. Continuous measurements of new particle formation were taken over the 2-year period while two...article 2002
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TNO Fysisch en Elektronisch Laboratorium (author), O'Dowd, C.D. (author), Haemeri, K. (author), Maekelae, J.M. (author), Vaekeva, M. (author), Aalto, P. (author), de Leeuw, G. (author), Kunz, G.J. (author), Becker, E. (author), Hansson, H-C. (author), Allen, A.G. (author), Harrison, R.M. (author), Berresheim, H. (author), Kleefeld, C. (author), Geever, M. (author), Jennings, S.G. (author), Kulmala, M. (author)Nucleation mode aerosol was characterized during coastal nucleation events at Mace Head during intensive New Particle Formation and Fate in the Coastal Environment (PARFORCE) field campaigns in September 1998 and June 1999. Nucleation events were observed almost on a daily basis during the occurrence of low tide and solar irradiation. In...article 2002
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TNO Fysisch en Elektronisch Laboratorium (author), Kleefeld, C. (author), O'Dowd, C.D. (author), O'Reilly, S. (author), Jennings, S.G. (author), Aalto, P. (author), Becker, E. (author), Kunz, G.J. (author), de Leeuw, G. (author)Measurements of the aerosol light scattering coefficient (σsp) at a wavelength of λ - 550 nm were conducted at a coastal atmospheric research station in the east Atlantic Ocean during June 1999. Size distribution measurements between diameters of 3 nm and 40 um (at ambient humidity) were used to derive scattering coefficients from Mie theory....article 2002
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O'Dowd, C.D. (author), Mäkela, J.M. (author), Korhonen, P. (author), Hämeri, K. (author), Väkevä, M. (author), Pirjola, L. (author), Hansson, H-C. (author), Jennings, S.G. (author), de Leeuw, G. (author), Kunz, G.J. (author), Berresheim, H. (author), Harrison, R.M. (author), Allen, A.G. (author), Viisanen, Y. (author), Kulmala, M. (author), TNO Fysisch en Elektronisch Laboratorium (author)Understanding the formation of natural particles in the atmosphere, and their growth to radiatively active sizes, is critical to quantifying the role of anthropogenic emissions on cloud formation, climate change and public health. Only a few regions have been identified as strong natural sources of aerosols in the boundary layer: in particular,...conference paper 2000
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Kleefeld, C. (author), O'Reilly, S. (author), Jennings, S.G. (author), Kunz, G. (author), de Leeuw, G. (author), Aalto, P. (author), Becker, E. (author), O'Dowd, C. (author), TNO Fysisch en Elektronisch Laboratorium (author)In June 1999 an intensive measurement campaign, Particle Formation and Fate in the Coastal Environment (PARFORCE), was conducted at the coastal Global Atmospheric Watch (GAW) research station at Mace Head, Ireland. Reported are the results of the aerosol scattering measurements. Aerosol scattering is dominated by the local sea-salt source and...conference paper 2000
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- O'Dowd, C.D. (author), Becker, E. (author), Hoell, C. (author), Mäkela, J.M. (author), Kulmala, M. (author), Hämeri, K. (author), Väkevä, M. (author), Pirjola, L. (author), Aalto, P. (author), Hansson, H-C. (author), Strom, J. (author), Jennings, S.G. (author), Geever, M. (author), de Leeuw, G. (author), Kunz, G.J. (author), Berresheim, H. (author), Hewitt, C.N. (author), Sartin, J. (author), Harrison, R.M. (author), Allen, A.G. (author), Viisanen, Y. (author), Korhonen, P. (author), Rapsomanikis, S. (author), Hoffman, T. (author), TNO Fysisch en Elektronisch Laboratorium (author) article 2000