*Georgiadi Aleksandr¹、Sinyukovich Valery²、Groisman Pavel³、Borodin Oleg⁴、Aslamov Ilya² (1.Institute of Geography, Russian Academy of Sciences、2.Limnological Institute, Siberian Branch of the Russian Academy of Sciences, 664033 Irkutsk, Russia、3.North Carolina State University at NOAA National Center for Environmental Information and Hydrology Science & Services Corporation, Asheville, North Carolina, USA、4.Water Problems Institute, Russian Academy of Sciences, 119333 Moscow, Russia)