2:30 PM - 2:45 PM
*Prabir Patra1,2, Tazu Saeki1, Edward J Dlugokencky4, Kentaro Ishijima1, Taku Umezawa3, Akihiko Ito3, Shuji Aoki2, Shinji Morimoto2, Eric A Kort5, Andrew Crotwell4, Ravi Kumar Kunchala6, Takakiyo Nakazawa2 (1.Department of Environmental Geochemical Cycle Research, JAMSTEC, Yokohama, Japan, 2.CAOS, Graduate School of Science, Tohoku University, Sendai, Japan, 3.National Institute for Environmental Studies, Tsukuba, Japan, 4.NOAA Earth System Research Laboratory, Colorado, USA, 5.University of Michigan, Michigan, USA, 6.Arctic GRENE, National Institute of Polar Research, Tachikawa, Japan)