三峡东区春季首次强降水的气候特征  

SOME CLIMATIC FEATURES OF THE FIRST HEAVY RAINFALL OVER THE EASTERN SANXIA REGION IN SPRING

作　　者：叶谦[1,2] 谢安[1,2] 刘霞[1,2] 

机构地区：[1]北京大学地球物理系暴雨监测和预测国家实验室 [2]中国气象局北京气象中心

出　　处：《高原气象》1999年第1期71-78,共8页Plateau Meteorology

基　　金：中国气象局"长江三峡工程大江截流气象保障服务技术开发"资助;国家教委留学回国人员科研启动基金资助

摘　　要：应用１６年ＮＭＣ常规资料和卫星ＯＬＲ资料，分析了三峡东区春季首次强降水的气候特征。其特点：以西路冷空气影响为主；与高原的对流系统有直接联系；从中南半岛向东北，经我国西南的低层暖湿空气输送带是春季强降水的必要条件。Climatic characteristics of the first heavy rainfall over the eastern Sanxia region in spring have been analyzed by using sixteen year NMC data and OLR observations. It has been found that (1) the first rainfall is mainly caused by the cold air from west; (2) the convection systems over the Qinghai Xizang Plateau have direct impact on the rainfall;(3) the moisture transport from the Indochina Peninsula through the south western China provides a necessary condition for the first rainfall.

关 键 词：三峡东区 高原对流系统 OLR资料 降水 气候特征 

分 类 号：P426.6[天文地球—大气科学及气象学] P463.1