The Numerical Simulation of the Responding of Indian and East-Asian Summer Monsoon Circulation to ENSO and Interdecadal Variation
印度与东亚夏季风环流对ENSO及其年代际异常响应的数值研究

Based on L9R15 climatic model. the effect of ENSO events under the differentinterdecadal background on Asian summer monsoon circulation is discussed by three numerical exper-iments. The results show that Asian summer monsoon anomaly cor responding to ENSO events are different under the different interdecadal background. Under the cold background;; the Indiansummermonsoon (ISM) is weak with smaller wind and scaree preicipitation;; and the east Asian summer mon-soon (EASM) is strong with greater northward flow and abundant preicipitation at the increasing stageof ENSO events;; but both of ISM and EASM are weaker at the decreasing stage of ENSO events.Un-der the warm background;; the ISM is weak with small land-sea heating differenee and scarcepreicipitation;; and the EASM is also weak at the increasing stage of ENSO events;; but ISM is muchstronger with the land-sea heating difference;; zonal winds and preicipitation enhancing remarkably;;which is easy to lead to flood over the indian areas. At the same time the EASM is a little stronger thanthat in normal monsoon years.