季风梅雨带水汽输送与动力强迫源结构  

Water Vapor Transport and Dynamic Forcing Sources Structure over Meiyu Belt

作　　者：苗秋菊[1] 徐祥德[1] 王金星[2] 

机构地区：[1]中国气象科学研究院,北京100081 [2]中国气象局,北京100081

出　　处：《气象科技》2004年第5期311-315,共5页Meteorological Science and Technology

基　　金：国际科技合作重点项目"中日合作高原及周边地区水分循环过程观测试验研究"预研究资助

摘　　要：对长江流域季风梅雨水汽输送特征、长江流域夏季旱涝过程与强信号强迫源(青藏高原与低纬海洋)遥相关动力结构以及季风梅雨过程水汽输送源汇结构等有关研究成果及观点进行综述,给出季风梅雨水汽输送流型与强迫源遥相关物理图像,即由青藏高原动力强迫效应形成的低纬海洋-高原-长江流域远距离水汽输送流型,以及海洋强信号区(南海、西太平洋暖池、赤道东太平洋等区域)热力异常构成长江流域梅雨期洪涝、暴雨等灾害性气候异常特征。研究结果揭示了长江流域洪涝及其暴雨形成过程二维Rossby波列或低频波传播能量的动力机制。A review is given of water vapor transport features over the Meiyu belt along the Yangtze River valley, the teleconncetion dynamic structure of strong signal forcing sources (Qinghai Tibetan Plateau and tropical oceans) for droughts/floods in the Yangtze River valley, and the water vapor transport source/sink structure related with monsoon Meiyu rainfall. Through synthetic analyses, some results are obtained: The dynamic effect of the Plateau contributes to the long distance water vapor transport, turning at the Plateau from lower latitude oceans to the Yangtze River valley. The oceanic strong signals have influence on the regional drought/flood disastrous climate anomaly. As well, the dynamic mechanisms for two dimensional Rossby wave and low frequency wave energy propagation are explored.

关 键 词：水汽输送 梅雨 季风 强信号 遥相关 暴雨 海洋 强迫 研究结果 综述 

分 类 号：P426[天文地球—大气科学及气象学] P458