Institution: | Institute for Tropospheric Research, Permoserstr. 15, D-04303 Leipzig, Germany;;Department of Atmospheric Science, University of Washington, Seattle, WA 98195, USA;;Department of Nuclear Physics, University of Lund, Sölvegatan 14, S-22362 Lund, Sweden;;Department of Physics, University of Helsinki, SF-00170 Helsinki, Finland;;Department of Meteorology, Stockholm University, S-10691 Stockholm, Sweden |