Sensitivity of Tropical Cyclone Precipitation to Atmospheric Moisture Content: Case Study of Bilis (2006)  

作　　者：WU Wei CHEN Ji-Long 

机构地区：[1]Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beo'ing 100190, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Atmospheric and Oceanic Science Letters》2012年第5期420-425,共6页大气和海洋科学快报（英文版）

基　　金：supported by the National Basic Research Program of China (2009CB421405);the Special Scientific Research Project for Public Interest(GYHY201006021);the National Natural Science Foundation of China (40975046 and 40921160379)

摘　　要：In this article, the authors used the Weather Research and Forecast model to investigate the sensitivity of tropical cyclone Bilis' total precipitation to ambient water vapor content. The tropical cyclone precipitation decreased dramatically with the reduction of the ambient water vapor content in the atmosphere. The decrease of precipitation can be explained by two mechanisms. First, as the major source of precipitation, moisture conver-gence decreases accordingly with the moisture content. Second, the tropical cyclone (TC) size reduction due to the moisture decrease influences the precipitation area. Both mechanisms were observed in this study.In this article, the authors used the Weather Research and Forecast model to investigate the sensitivity of tropical cyclone Bilis＇ total precipitation to ambient water vapor content. The tropical cyclone precipitation decreased dramatically with the reduction of the ambient water vapor content in the atmosphere. The decrease of precipitation can be explained by two mechanisms. First, as the major source of precipitation, moisture conver- gence decreases accordingly with the moisture content. Second, the tropical cyclone （TC） size reduction due to the moisture decrease influences the precipitation area. Both mechanisms were observed in this study.

关 键 词：tropical cyclone PRECIPITATION humidity water vapor 

分 类 号：P457.8[天文地球—大气科学及气象学] S816.53[农业科学—饲料科学]