*Pavel Groisman^1,2,3、Sergey Gulev²、Ambroise Dufour²、Ge Peng¹、Dmitry Streletskiy⁴、Nina Speranskaya⁵、Nadezhda Tchebakova⁶ (1.North Carolina Institute for Climate Studies, North Carolina State University, USA、2.Institute of Oceanology, Russian Academy of Sciences, Russia、3.Hydrology Science and Services Corporation, USA、4.George Washington University, USA、5.State Hydrologic Institute, Russia、6.Forest Institute of the Siberian Branch of the Russian Academy of Sciences, Russia)