Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 8 4 2008 10.5194/acpd-8-16097-2008 http://www.atmos-chem-phys-discuss.net/8/16097/2008/ http://www.atmos-chem-phys-discuss.net/8/16097/2008/acpd-8-16097-2008.html http://www.atmos-chem-phys-discuss.net/8/16097/2008/acpd-8-16097-2008.pdf 16097 16121 2008-08-25 Properties of aerosols and their wet deposition in the arctic spring during ASTAR2004 at Ny-Alesund, Svalbard S. Yamagata yamagata@eng.hokudai.ac.jp D. Kobayashi S. Ohta N. Murao M. Shiobara M. Wada M. Yabuki H. Konishi T. Yamanouchi Graduate School of Engineering, Hokkaido University, Sapporo, Japan National Institute of Polar Research, Tokyo, Japan Osaka Kyoiku University, Osaka, Japan During the period of scientific campaign "Arctic Study of Tropospheric Aerosols, Clouds and Radiation 2004" (ASTAR2004), precipitation samples were collected in late spring at Ny-Alesund, Svalbard and their ionic components were analyzed in parallel with the measurement of properties of atmospheric aerosol particles at the same place. Backward trajectory analyses indicated that the air mass above the observatory initially dominated by air masses from the Arctic Ocean, then those from western Siberia and later those from Greenland and the Arctic Ocean. In the measurement period, six precipitation samples were obtained and five of them were analyzed their ionic components by ionchromatography. 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