华中地区空中水汽资源的输送和收支研究  

Study of Transport and Budget of Water Vapor Resources in Central China

作　　者：张楠[1] 王霄[2] 程家合[2] 

机构地区：[1]民航河南空管分局,郑州451161 [2]河南省气象科技服务中心,郑州450003

出　　处：《气象与环境科学》2011年第2期25-30,共6页Meteorological and Environmental Sciences

基　　金：气象高影响行业服务指标建设(Z2009013)资助

摘　　要：采用1980-2009年的NCEP\NCAR再分析资料,对华中地区5省的四季大气可降水量和水汽输送通量进行了计算,并分析了华中地区四季的大气水汽分布、水汽来源和多年来水汽的收支变化,结果表明:华中地区的大气可降水量夏季最多,冬季最少,水汽分布与纬度最为相关,同时也受海拔高度的影响。春季,华中地区的水汽主要来源于太平洋以及西风带的水汽输送;夏季,水汽主要来源于印度洋以及西风带的输送;秋季,水汽来源最为复杂,分别来自于南海、印度洋以及西风带的输送;冬季,水汽主要来源于西风带的输送。华中地区为水汽的盈余区,南边界为稳定的水汽输入边界,华中地区全年的水汽收支变率同南边界的输入变率一致。The precipitabte water vapor and water vapor flux of four seasons for five provinces in Central China are calculated based on NCEP／NCAR reanalysis data from 1980 to 2009. The distribution, the source of atmospheric water vapor and the change of water vapor budget over years in Central China is analyzed. The conclusions is followed： the precipitable water in Central China is the most in summer, least in winter; the distribution is related to latitude mostly, and impact by altitude. The water vapor in Central China mainly comes from Pacific Ocean and the transport of westerlies in spring; in summer it comes from Indian Ocean and the transport of westerlies. The source of water vapor are complex in autumn, it comes from the South China Sea, Indian Ocean and westerlies delivery. In winter the mainly source of water vapor is the transport of weaterlies. The water vapor in Central China is surplus. The water budget in Central China yearly is the same with the variability of southern boundary, which is stable water vapor enter border.

关 键 词：华中地区 大气可降水量 水汽输送 水汽收支 

分 类 号：P426[天文地球—大气科学及气象学]