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Simpson, D. (author), Kuenen, J.J.P. (author), Fagerli, H. (author), Heinesen, D. (author), Benedictow, A. (author), Denier van der Gon, H.A.C. (author), Visschedijk, A.J.H. (author), Klimont, Z. (author), Aas, W. (author), Lin, Y. (author), Espen Yttri, K. (author), Paunu, V.V. (author)Condensable primary organic aerosols are a class of compounds that are vapour phase at stack conditions, but which can undergo both condensation and evaporation as the stack air is cooled and diluted upon discharge into ambient air. In the current emission reporting to the Air Convention, some countries include, and some exclude such emissions...book 2022
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Fagerli, H. (author), Tsyro, S. (author), Jonson, J.E. (author), Nyiri, A. (author), Simpson, D. (author), Wind, P. (author), Benedictow, A. (author), Klein, H. (author), Mu, Q. (author), Denby, B.R. (author), Waersted, E.G. (author), Aas, W. (author), Eckhardt, S. (author), Hjellbrekke, A. (author), Solberg, S. (author), Platt, S.M. (author), Yttri, K.E. (author), Torseth, K. (author), Mareckova, K. (author), Matthews, B. (author), Schindlbacher, S. (author), Ullrich, B. (author), Wankmuller, R. (author), Scheuschner, T. (author), Bergstrom, R. (author), Denier van der Gon, H.A.C. (author), Kuenen, J.J.P. (author), Visschedijk, A.J.H. (author), Reimann, S. (author), Hill, M. (author), Claude, A. (author)This report presents the EMEP activities in 2019 and 2020 in relation to transboundary fluxes of particulate matter, photo-oxidants, acidifying and eutrophying components, with focus on results for 2018. It presents major results of the activities related to emission inventories, observations and modelling. The report also introduces specific...report 2020
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Glasius, M. (author), Hansen, A.M.K. (author), Claeys, M. (author), Henzing, J.S. (author), Jedynska, A.D. (author), Kasper-Giebl, A. (author), Kistler, M. (author), Kristensen, K. (author), Martinsson, J. (author), Maenhaut, W. (author), Nøjgaard, J.K. (author), Spindler, G. (author), Stenström, K.E. (author), Swietlicki, E. (author), Szidat, S. (author), Simpson, D. (author), Yttri, K.E. (author)Sources of elemental carbon (EC) and organic carbon (OC) in atmospheric aerosols (carbonaceous aerosols) were investigated by collection of weekly aerosol filter samples at six background sites in Northern Europe (Birkenes, Norway; Vavihill, Sweden; Risoe, Denmark; Cabauw and Rotterdam in The Netherlands; Melpitz, Germany) during winter 2013....article 2018
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Schaap, M. (author), Cuvelier, C. (author), Hendriks, C. (author), Bessagnet, B. (author), Baldasano, J.M. (author), Colette, A. (author), Thunis, P. (author), Karam, D. (author), Fagerli, H. (author), Graff, A. (author), Kranenburg, R. (author), Nyiri, A. (author), Pay, M.T. (author), Rouïl, L. (author), Schulz, M. (author), Simpson, D. (author), Stern, R. (author), Terrenoire, E. (author), Wind, P. (author)Air pollution causes adverse effects on human health as well as ecosystems and crop yield and also has an impact on climate change trough short-lived climate forcers. To design mitigation strategies for air pollution, 3D Chemistry Transport Models (CTMs) have been developed to support the decision process. Increases in model resolution may...article 2015
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Denier van der Gon, H.A.C. (author), Bergstrom, R. (author), Fountoukis, C. (author), Johansson, C. (author), Panis, S.N. (author), Simpson, D. (author), Visschedijk, A.J.H. (author)Currently residential wood combustion (RWC) is increasing in Europe because of rising fossil fuel prices but also due to climate change mitigation policies. However, especially in smail-scale applications, RWC may cause high emissions of particutate mafler (PM). Recently we have developed a new high-resolution (7 x 7km) anthropogenic...article 2015
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Sutton, M.A. (author), Reis, S. (author), Riddick, S.N. (author), Dragosits, U. (author), Nemitz, E. (author), Theobald, M.R. (author), Tang, Y.S. (author), Braban, C.F. (author), Vieno, M. (author), Dore, A.J. (author), Mitchell, R.F. (author), Wanless, S. (author), Daunt, F. (author), Fowler, D. (author), Blackall, T.D. (author), Milford, C. (author), Flechard, C.R. (author), Loubet, B. (author), Massad, R. (author), Cellier, P. (author), Personne, E. (author), Coheur, P.F. (author), Clarisse, L. (author), van Damme, M. (author), Ngadi, Y. (author), Clerbaux, C. (author), Skjøth, C.A. (author), Geels, C. (author), Hertel, O. (author), Kruit, R.J.W. (author), Pinder, R.W. (author), Bash, J.O. (author), Walker, J.T. (author), Simpson, D. (author), Horváth, L. (author), Misselbrook, T.H. (author), Bleeker, A. (author), Dentener, F. (author), de Vries, W. (author)Existing descriptions of bi-directional ammonia (NH3) land-atmosphere exchange incorporate temperature and moisture controls, and are beginning to be used in regional chemical transport models. However, such models have typically applied simpler emission factors to upscale the main NH3 emission terms. While this approach has successfully...article 2013
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Bleeker, A. (author), de Vries, W. (author), Dentener, F. (author), Sutton, M.A. (author), Reis, S. (author), Riddick, S.N. (author), Dragosits, U. (author), Nemitz, E. (author), Theobald, M.R. (author), Tang, Y.S. (author), Braban, C.F. (author), Vieno, M. (author), Dore, A.J. (author), Mitchell, R.F. (author), Wanless, S. (author), Daunt, F. (author), Fowler, D. (author), Blackall, T.D. (author), Milford, C. (author), Flechard, C.R. (author), Loubet, B. (author), Massad, R. (author), Cellier, P. (author), Coheur, P.F. (author), Clarisse, L. (author), van Damme, M. (author), Ngadi, Y. (author), Clerbaux, C. (author), Ambelas Skjoth, C. (author), Geels, C. (author), Hertel, O. (author), Wichink Kruit, R.J. (author), Pinder, R.W. (author), Bash, J.O. (author), Walker, J.D. (author), Simpson, D. (author), Horvath, L. (author), Misselbrook, T.H. (author)Existing descriptions of bi-directional ammonia (NH3) land–atmosphere exchange incorporate temperature and moisture controls, and are beginning to be used in regional chemical transport models. However, such models have typically applied simpler emission factors to upscale the main NH3 emission terms. While this approach has successfully...article 2013
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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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Hodnebrog, Ø. (author), Solberg, S. (author), Stordal, F. (author), Svendby, T.M. (author), Simpson, D. (author), Gauss, M. (author), Hilboll, A. (author), Pfister, G.G. (author), Turquety, S. (author), Richter, A. (author), Burrows, J.P. (author), Denier Van Der Gon, H.A.C. (author)The hot summer of 2007 in southeast Europe has been studied using two regional atmospheric chemistry models; WRF-Chem and EMEP MSC-W. The region was struck by three heat waves and a number of forest fire episodes, greatly affecting air pollution levels. We have focused on ozone and its precursors using state-of-the-art inventories for...article 2012
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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
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Erisman, J.W. (author), Vermeulen, A.T. (author), Bleeker, A. (author), Flechard, C. (author), Fowler, D. (author), Sutton, M. (author), Nemitz, E. (author), Tang, Y.S. (author), Smith, R.I. (author), Simpson, D. (author), Zhang, L. (author)Inferential models have long been used to determine pollutant dry deposition to ecosystems from measurements of air concentrations and as part of national and regional atmospheric chemistry and transport models, and yet models still suffer very large uncertainties. An inferential network of 55 sites throughout Europe for atmospheric reactive...article 2011
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Erisman, J.W. (author), Vermeulen, A.T. (author), Bleeker, A. (author), Flechard, C. (author), Fowler, D. (author), Sutton, M. (author), Nemitz, E. (author), Tang, Y.S. (author), Smith, R.I. (author), Simpson, D. (author), Zhang, L. (author)Inferential models have long been used to determine pollutant dry deposition to ecosystems from measurements of air concentrations and as part of national and regional atmospheric chemistry and transport models, and yet models still suffer very large uncertainties. An inferential network of 55 sites throughout Europe for atmospheric reactive...article 2010
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Duyzer, J. (author), Pilegaard, K. (author), Simpson, D. (author), Weststrate, H. (author), Walton, S. (author)A simple model (2layer) was constructed that describes the exchange of the reactive gases NO, NO2 and O3 between forest and the atmosphere. The model uses standard equations to describe exchange processes and uptake of gases. It also takes into account reactions taking place in the trunk space between NO and O3 and photolysis of NO2. All...article 2005
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Kuhn, M. (author), Builtjes, P.J.H. (author), Poppe, D. (author), Simpson, D. (author), Stockwell, W.R. (author), Andersson-Sköld, Y. (author), Baart, A. (author), Das, M. (author), Fiedler, F. (author), Hov, Ø. (author), Kirchner, F. (author), Makar, P.A. (author), Milford, J.B. (author), Roemer, M.G.M. (author), Ruhnke, R. (author), Strand, A. (author), Vogel, B. (author), Vogel, H. (author), TNO Milieu, Energie en Procesinnovatie (author)An intercomparison of nine chemical mechanisms (e.g. ADOM, CBM-IV, EMEP, RADM2) as used by 12 contributing groups was conducted. The results for three scenarios are presented covering remote situations with a net O3 loss of around 2.7 ppb (LAND and FREE) and a moderately polluted situation with O3 formation of around 100 ppb (PLUME1) over a 5...article 1998
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Hass, H. (author), Builtjes, P.J.H. (author), Simpson, D. (author), Stern, R. (author), TNO Milieu, Energie en Procesinnovatie (author)An intercomparison study has been performed with four photo-oxidant dispersion models (EMEP, EURAD, LOTOS and REM3) which are currently capable of performing photo-oxidant formation calculations over larger path of Europe. The models, in principle, were run in the mode in which they are normally used, with their own input data and process...conference paper 1997