ACP Atmospheric Chemistry and Physics ACP 1680-7324 Copernicus GmbH Göttingen, Germany 10.5194/acp-11-13061-2011 General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano to global scales Kulmala M. 1 Asmi A. 1 Lappalainen H. K. 1 2 Baltensperger U. 3 Brenguier J.-L. 4 Facchini M. C. 5 Hansson H.-C. 6 Hov Ø. 7 O'Dowd C. D. 8 Pöschl U. 9 Wiedensohler A. 10 Boers R. 11 Boucher O. 12 61 de Leeuw G. 1 2 13 Denier van der Gon H. A. C. 13 Feichter J. 14 Krejci R. 6 Laj P. 15 Lihavainen H. 2 Lohmann U. 16 McFiggans G. 17 Mentel T. 18 Pilinis C. 19 Riipinen I. 1 36 Schulz M. 7 20 Stohl A. 21 Swietlicki E. 22 Vignati E. 23 Alves C. 25 Amann M. 24 Ammann M. 59 Arabas S. 26 Artaxo P. 27 Baars H. 10 Beddows D. C. S. 28 Bergström R. 29 Beukes J. P. 30 Bilde M. 31 Burkhart J. F. 21 Canonaco F. 3 Clegg S. L. 32 Coe H. 17 Crumeyrolle S. 33 D'Anna B. 34 Decesari S. 5 Gilardoni S. 23 Fischer M. 35 Fjaeraa A. M. 21 Fountoukis C. 36 George C. 34 Gomes L. 4 Halloran P. 12 Hamburger T. 37 Harrison R. M. 28 Herrmann H. 10 Hoffmann T. 38 Hoose C. 39 Hu M. 40 Hyvärinen A. 2 Hõrrak U. 41 Iinuma Y. 10 Iversen T. 7 Josipovic M. 30 Kanakidou M. 42 Kiendler-Scharr A. 18 KirkevÃ¥g A. 7 Kiss G. 43 Klimont Z. 24 Kolmonen P. 2 Komppula M. 44 Kristjánsson J.-E. 45 Laakso L. 1 2 30 Laaksonen A. 2 46 Labonnote L. 47 Lanz V. A. 3 Lehtinen K. E. J. 44 46 Rizzo L. V. 27 Makkonen R. 1 Manninen H. E. 1 McMeeking G. 17 Merikanto J. 1 Minikin A. 37 Mirme S. 35 Morgan W. T. 17 Nemitz E. 48 O'Donnell D. 14 Panwar T. S. 49 Pawlowska H. 26 Petzold A. 37 Pienaar J. J. 30 Pio C. 25 Plass-Duelmer C. 50 Prévôt A. S. H. 3 Pryor S. 51 Reddington C. L. 52 Roberts G. 11 Rosenfeld D. 53 Schwarz J. 54 Seland Ø. 7 Sellegri K. 55 Shen X. J. 56 Shiraiwa M. 9 Siebert H. 10 Sierau B. 16 Simpson D. 7 60 Sun J. Y. 56 Topping D. 17 Tunved P. 6 Vaattovaara P. 46 Vakkari V. 1 Veefkind J. P. 11 Visschedijk A. 13 Vuollekoski H. 1 Vuolo R. 20 Wehner B. 10 Wildt J. 18 Woodward S. 12 Worsnop D. R. 1 2 57 van Zadelhoff G.-J. 11 Zardini A. A. 31 58 Zhang K. 14 van Zyl P. G. 30 Kerminen V.-M. 2 S Carslaw K. 52 Pandis S. N. 36 Department of Physics, University of Helsinki, 00014 Helsinki, Finland Finnish Meteorological Institute, Research and Development, 00101 Helsinki, Finland Paul Scherrer Institut, Laboratory of Atmospheric Chemistry, Villigen PSI, Switzerland French Meteorological Service, 31057 Toulouse, France Institute of Atmospheric Sciences and Climate (ISAC), National Research Council (CNR), Bologna, Italy Department of Applied Environmental Science (ITM), Stockholm University, 10691 Stockholm, Sweden Norwegian Meteorological Institute, 0313 Oslo, Norway School of Physics & Centre for Climate and Air Pollution Studies, Environmental Change Institute, National University of Ireland, Galway, Ireland Max Planck Institute for Chemistry, Mainz, Germany Leibniz Institute for Tropospheric Research, 04318 Leipzig, Germany Earth Observation and Climate Department/Climate and Seismology Sector, KNMI, The Netherlands Met Office Hadley Centre, Fitzroy Road, Exeter, Devon, EX1 3PB, UK TNO Built Environment and Geosciences, Utrecht, The Netherlands Max Planck Institute for Meteorology, Hamburg, Germany Laboratoire de Glaciologie et Géophysique de l'Environnement (LGGE), CNRS/University of Grenoble, Grenoble, France Institute of Atmospheric and Climate Science, ETH Zurich, Switzerland School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Manchester, UK Institut fuer Energie- und Klimaforschung – Troposphaere, Forschungszentrum GmbH Jülich, 52425 Jülich, Germany Department of Environment, University of the Aegean, Mytilene, Greece Laboratoire des Sciences du Climat et de l'Environnement, Gif-sur-Yvette, France NILU, Norwegian Institute for Air Research, Kjeller, Norway Division of Nuclear Physics, Lund University, P.O. Box 118, 22100 Lund, Sweden European Commission, Institute for Environment and Sustainability, Climate Change and Air Quality Unit, Ispra, Italy IIASA, International Institute for Applied Systems Analysis, Laxenburg, Austria CESAM & Department of Environment, University of Aveiro, Portugal Institute of Geophysics, Faculty of Physics, University of Warsaw, Warsaw, Poland Institute of Physics University of São Paulo Rua do Matão, Travessa R, 187 CEP05508-090, Sao Paulo, Brazil University of Birmingham, Division of Environmental Health and Risk Management, Birmingham, UK Department of Chemistry, University of Gothenburg, 412 96 Gothenburg, Sweden School of Physical and Chemical Sciences, North-West University, Potchefstroom, South Africa Department of Chemistry, University of Copenhagen, Copenhagen, Denmark School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, UK Laboratoire de Météorologie Physique, Université Blaise Pascal, Clermont-Ferrand, France CNRS, UMR5256, IRCELYON, Institut de recherches sur la catalyse et l'environnement de Lyon, Villeurbanne, Université de Lyon, Lyon, 69626, France Airel Ltd, Tähe 4, 51010 Tartu, Estonia Institute of Chemical Engineering and High Temperature Chemical Processes (ICE-HT), Foundation for Research and Technology Hellas (FORTH), Patras, 26504, Greece Deutsches Zentrum fuer Luft- und Raumfahrt (DLR), Institute of Physics of Atmosphere, Oberpfaffenhofen, 82234 Wessling, Germany Institut für Anorganische und Analytische Chemie, Johannes Gutenberg-University, Mainz, Germany Karlsruhe Institute of Technology, Karlsruhe, Germany State Key Joint Laboratory of Environmental Simulation and Pollution Control (Peking University), College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China Institute of Physics, University of Tartu, 18 Ãœlikooli St., Tartu, 50090, Estonia Environmental Chemical Processes Laboratory, Department of Chemistry, University of Crete, 71003, P.O. Box 2208, Heraklion, Greece Air Chemistry Group of Hungarian Academy of Sciences, University of Pannonia, P.O. Box 158, 8201 Veszprém, Hungary Finnish Meteorological Institute, Kuopio Unit, 70211 Kuopio, Finland Department of Geosciences, University of Oslo, Oslo, Norway University of Eastern Finland, Dept. Applied Physics, POB 1627, 70211 Kuopio, Finland Laboratoire d'Optique Atmosphérique – Université des Sciences et Technologies de Lille/CNRS, Villeneuve d'Ascq Cedex, France Centre for Ecology & Hydrology Bush Estate, Penicuik, Midlothian, EH26 0QB, UK TERI Darbari Seth Block IHC complex Lodhi Road, New Delhi, 110003, India Hohenpeissenberg Meteorological Observatory, Deutscher Wetterdienst, Germany Risø National Laboratory Fredriksborgvej 399, P.O. Box 49, 4000 Roskilde, Denmark University of Leeds, School of Earth and Environment, Leeds, LS2 9JT, UK Institute of Earth Sciences, The Hebrew University of Jerusalem, Israel Institute of Chemical Process Fundamentals AS CR, Rozvojova 135, Prague, Czech Republic Laboratoire de Météorologie Physique, UMR6016, CNRS/University of Clermont-Ferrand, Clermont-Ferrand, France Key Laboratory for Atmospheric Chemistry, CMA Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing 100081, China Aerodyne Research, Inc. 45 Manning Rd, Billerica, MA 0182, USA Institute for Energy, Sustainable Transport Unit, JRC-European Commission, 21027 Ispra (Va), Italy Paul Scherrer Institut, Laboratory of Radiochemistry and Environmental Chemistry, Switzerland Dept. Earth & Space Sciences, Chalmers University of Technology, Gothenburg, Sweden now at: Laboratoire de Météorologie Dynamique, IPSL/CNRS, Tour 45-55, Université P. et M. Curie, 4 place Jussieu, 75252 Paris Cedex 05, France 21 12 2011 11 24 13061 13143 This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This article is available from http://www.atmos-chem-phys.net/11/13061/2011/acp-11-13061-2011.html The full text article is available as a PDF file from http://www.atmos-chem-phys.net/11/13061/2011/acp-11-13061-2011.pdf

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 properties of aerosol particles over Europe, (b) comprehensive aerosol measurements in four developing countries, (c) a database of airborne measurements of aerosols and clouds over Europe during May 2008, (d) comprehensive modeling tools to study aerosol processes fron nano to global scale and their effects on climate and air quality. In addition a new Pan-European aerosol emissions inventory was developed and evaluated, a new cluster spectrometer was built and tested in the field and several new aerosol parameterizations and computations modules for chemical transport and global climate models were developed and evaluated. These achievements and related studies have substantially improved our understanding and reduced the uncertainties of aerosol radiative forcing and air quality-climate interactions. The EUCAARI results can be utilized in European and global environmental policy to assess the aerosol impacts and the corresponding abatement strategies.

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