document

A sea spray aerosol flux parameterization encapsulating wave state

Ovadnevaite, J. (author), Manders, A. (author), de Leeuw, G. (author), Ceburnis, D. (author), Monahan, C. (author), Partanen, A.I. (author), Korhonen, H. (author), O'Dowd, C.D. (author)

A new sea spray source function (SSSF), termed Oceanflux Sea Spray Aerosol or OSSA, was derived based on in-situ sea spray aerosol measurements along with meteorological/physical parameters. Submicron sea spray aerosol fluxes derived from particle number concentration measurements at the Mace Head coastal station, on the west coast of Ireland,...

article 2014

document

Intercomparison and evaluation of global aerosol microphysical properties among AeroCom models of a range of complexity

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

document

Intercomparison and evaluation of aerosol microphysical properties among AeroCom global models of a range of complexity

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

Mobility particle size spectrometers: Harmonization of technical standards and data structure to facilitate high quality long-term observations of atmospheric particle number size distributions

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

document

Primary versus secondary contributions to particle number concentrations in the European boundary layer

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

General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI)-integrating aerosol research from nano to global scales

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

On the representativeness of coastal aerosol studies to open ocean studies: Mace Head-a case study

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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Coastal and open ocean aerosol characteristics: Investigating the representativeness of coastal aerosol sampling over the North-East Atlantic Ocean

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 Kwaliteit van Leven (author)

In order to achieve a better understanding of the modifications of the physical and chemical properties of marine aerosol particles during transport from offshore to the coast, size distribution and chemical composition were measured concurrently in clean air masses over the open North Atlantic Ocean and at an Irish coastal site. Open ocean...

article 2008

document

Relationship of oceanic whitecap coverage to wind speed and wind history

TNO Bouw en Ondergrond (author), Callaghan, A. (author), de Leeuw, G. (author), Cohen, L. (author), O'Dowd, C.D. (author)

Sea surface images obtained during the 2006 Marine Aerosol Production (MAP) campaign in the North East Atlantic were analysed for values of percentage whitecap coverage (W). Values of W are presented for wind speeds up to circa 23 m s-1. The W data were divided into two overlapping groups and a piecewise, wind-speed-only parameterization of W is...

article 2008

document

Marine aerosol production: a review of the current knowledge

O'Dowd, C.D. (author), de Leeuw, G. (author)

The current knowledge in primary and secondary marine aerosol formation is reviewed. For primary marine aerosol source functions, recent source functions have demonstrated a significant flux of submicrometre particles down to radii of 20 nm. Moreover, the source functions derived from different techniques up to 10 um have come within a factor of...

article 2007

document

The North Atlantic Marine Boundary Layer Experiment (NAMBLEX). Overview of the campaign held at Mace Head, Ireland, in summer 2002

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

document

Surfactants and submicron sea spray generation

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

document

Submicron sea spray fluxes

Geever, M. (author), O'Dowd, C.D. (author), van Ekeren, S. (author), Flanagan, R. (author), Nilsson, E.D. (author), de Leeuw, G. (author), Rannik, U. (author), TNO Defensie en Veiligheid (author)

Eddy covariance aerosol flux measurements were conducted at the Mace Head coastal station in the North East Atlantic. Footprint and micrometeorological analysis under clean marine air mass conditions indicated that fluxes representative of open ocean conditions could be derived during high tide conditions and an oceanic fetch. Sea-spray fluxes...

article 2005

document

Submicron sea spray fluxes

TNO Defensie en Veiligheid (author), O'Dowd, C.D. (author), Gever, M. (author), van Ekeren, S. (author), Rannik, U. (author), Flanagan, R. (author), Nilsson, E.D. (author), de Leeuw, G. (author)

article 2005

document

A dedicated study of new particle formation and fate in the coastal environment (PARFORCE): overview of objectives and achievements

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

document

Coastal new particle formation: environmental conditions and aerosol physicochemical characteristics during nucleation bursts

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

document

Relative contribution of submicron and supermicron particles to aerosol light scattering in the marine boundary layer

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

document

PARFORCE: Objectives and achievements

Becker, E. (author), Hoell, C. (author), Kulmala, M. (author), Hameri, K. (author), Pirjola, L. (author), Aalto, P. (author), Geever, M. (author), Kunz, G. (author), Hansson, H.-C. (author), Strom, J. (author), Jennings, M. (author), O'Dowd, C.D. (author), Makela, J.M. (author), Vakeva, M. (author), de Leeuw, G. (author), TNO Fysisch en Elektronisch Laboratorium (author)

article 2001

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Aerosol scattering: Relation to primary and secondary aerosol production in the coastal atmosphere during the parforce campaign

Kleefeld, C. (author), O'Reilly, S. (author), Jennings, M. (author), Becker, E. (author), O'Dowd, C.D. (author), de Leeuw, G. (author), Kunz, G. (author), TNO Fysisch en Elektronisch Laboratorium (author)

article 2000

document

PARFORCE: Objectives and Achievements

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