ACPD Atmospheric Chemistry and Physics Discussions ACPD 1680-7375 Copernicus GmbH Göttingen, Germany 10.5194/acpd-8-19415-2008 Introduction: 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 Carslaw K. S. 3 Pöschl U. 4 Baltensperger U. 5 Hov Ø. 6 Brenquier J.-L. 7 Pandis S. N. 8 Facchini M. C. 9 Hansson H.-C. 10 Wiedensohler A. 11 O'Dowd C. D. 12 University of Helsinki, Department of Physical Sciences, 00014 Helsinki, Finland Finnish Meteorological Institute, Research and Development, 00101 Helsinki, Finland University of Leeds, School of Earth and Environment, Leeds LS2 9JT, UK Max Planck Institute for Chemistry, Mainz, Germany Paul Scherrer Institut, Villigen PSI, Switzerland EMEP Meteorological Synthesizing Center West (MSC-W), Norwegian Meteorological Institute, 0313 Oslo, Norway French Meteorological Service, 31057 Toulouse, France Institute of Chemical Engineering and High Temperature Chemical Processes (ICE-HT), Foundation for Research and Technology Hellas (FORTH), Patras, 26504, Greece Institute of Atmospheric Sciences and Climate (ISAC), National Research Council (CNR), Bologna, Italy Stockholm University, Department of Applied Environmental Science, 10691 Stockholm, Sweden Leibniz Institute for Tropospheric Research, 04318 Leipzig, Germany School of Physics & Centre for Climate and Air Pollution Studies, Environmental Change Institute, National University of Ireland, Galway, Ireland 17 11 2008 8 6 19415 19455 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-discuss.net/8/19415/2008/acpd-8-19415-2008.html The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/8/19415/2008/acpd-8-19415-2008.pdf

The European Aerosol Cloud Climate and Air Quality Interactions project EUCAARI is an EU Research Framework 6 integrated project focusing on understanding the interactions of climate and air pollution. EUCAARI works in an integrative and multidisciplinary way from nano- to global scale. EUCAARI brings together several leading European research groups, state-of-the-art infrastructure and some key scientists from third countries to investigate the role of aerosol on climate and air quality. Altogether 48 partners from 25 countries are participating in EUCAARI. During the first 16 months EUCAARI has built operational systems e.g. established pan-European measurement network for Lagrangian studies and four stations in developing countries. Also an improved understanding of nanoscale processes (like nucleation) has been implemented in global models. Here we present the research methods, organisation, operations and first results of EUCAARI.

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