*Kitayama Kyo1, Yu Morino1, Masayuki Takigawa2, Teruyuki Nakajima3, Hiroshi Hayami4, Haruyasu Nagai1, Hiroaki Terada5, Kazuo Saito6, Toshiki Shimbori6, Mizuo Kajino6, Sekiyama Tsuyoshi6, Damien Didier7, Anne Mathieu7, Toshimasa Ohara1, Haruo Tsuruta8,9, Yasuji Oura10, Mitsuru Ebihara10, Tokushi Shibata11
(1.National Institute for Environmental Studies, 2.Japan Agency for Marine-Earth Science and Technology, 3.Japan Aerospace Exploration Agency, 4.Central Research Institute of Electric Power Industry, 5.Japan Atomic Energy Agency, 6.Meteorological Research Institute, 7.Institut de Radioprotection et de Sûreté Nucléaire, 8.Remote Sensing Technology Center of Japan, 9.University of Tokyo, 10.Tokyo Metropolitan University, 11.Japan Radioisotope Association)