Responses of China's summer monsoon climate to snow anomaly over the Tibetan plateau

摘要: The climatological features of the winter snow depth over Tibetan Plateau and summer precipitation in China are diagnosed using datasets obtained from 78 observation stations 160 rainfall during 1957 to 1998. climatic effects anomaly on regional monsoon climate numerically simulated by use a model (RegCM2). singular value decomposition technique is adopted diagnose relationships between previous spring plateau anomalies China. It found that anomaly, especially winter, one factors influencing China; however, it perhaps not only one, even most important one. Nevertheless, proved relatively more than for Results numerical simulations show has evident China's climate. increase both cover can delay onset weaken intensity obviously, resulting decrease southern an Yangtze Huaihe River basins. influence substantial depth. mechanism how influences briefly analysed. change soil moisture surface temperature through snowmelt process at first, subsequently alter heat, radiation fluxes atmosphere. Abnormal circulation conditions induced changes may affect underlying properties turn. Such long-term interaction wetland atmosphere key later changes. Copyright © 2003 Royal Meteorological Society