Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, 980-8578 Japan ; Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093-0244 United States
Laboratoire de Glaciologie et Geophysique de l'Environnement, 54, rue Molie're, Grenoble, 38400 France
National Institute of Polar Research, 1-9-10 Kaga, Itabashi, Tokyo, 173-8515 Japan
IPSL/LSCE, Laboratoire des Sciences du Climat et de l'Environnement, UMR CEA-CNRS-UVSQ, CE Saclay, Orme des Merisiers, Gif-sur-Yvette, 91191 France ; Institut de Recherche pour le Developpement, 213, rue La Fayette, Paris, 75 480 France
Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093-0244 United States
Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, 980-8578 Japan
Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, 980-8578 Japan
IPSL/LSCE, Laboratoire des Sciences du Climat et de l'Environnement, UMR CEA-CNRS-UVSQ, CE Saclay, Orme des Merisiers, Gif-sur-Yvette, 91191 France
Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, 980-8578 Japan
Center for Atmospheric and Oceanic Studies, Tohoku University, Sendai, 980-8578 Japan
National Institute of Polar Research, 1-9-10 Kaga, Itabashi, Tokyo, 173-8515 Japan
National Institute of Polar Research, 1-9-10 Kaga, Itabashi, Tokyo, 173-8515 Japan