云南空中水汽资源的时空分布特征  

Characteristics of Temporal and Spatial Distribution of Water Vapor Resource in Yunnan Area

作　　者：沈鹰[1] 段玮[1] SHEN Ying;DUAN Wei(Yunnan Institute of Meteorology, Kunming Yunnan 650034, China)

机构地区：[1]云南省气象科学研究所,云南昆明650034

出　　处：《环境科学导刊》2016年第4期36-41,共6页Environmental Science Survey

基　　金：云南省科技惠民计划(2014RA002)

摘　　要：利用NCEP/NCAR1981—2010年逐月的再分析资料，详细分析了云南省上空的大气可降水量和水汽通量的月际变化情况，得到云南各地30年平均的大气可降水量范围为5~45kg/m2,并在区域分布上呈“U”字型分布，季节上呈现出夏季多、冬季少、春秋居中的特点；水汽输送有着明显的季节变化特征，春季的水气输送最强，但输入远小于输出，夏季的水汽输送较弱，但水汽输入远大于输出；全省垂直积分水汽通量纬向输送比经向输送大得多；每年流经云南省上空的水汽量达到1.72xl012t,且1一5月份，全省水汽为净支出，6—12月份，全省水汽为净收入，全年水汽净收入约2.0xlOut。Based on the NCEP/NCAR monthly reanalysis data from 1981 to 2010, the variations of the precipitable water content and the water vapor flux over Yunnan province were analyzed in this paper. The results showed that the average precipitable water content range was between 5kg/m2 and 45kg/m2 in the recent 30 years, and demonstrated a type on the regional distribution, and occurred the most in summer, the least in winter, the medium in spring and autumn seasonally. The water vapor transport had obvious seasonal characteristics. It was the strongest in spring, but the input was far less than the output. The water vapor transport was weaker in summer, but the input was far more than the output. The zonal transport of the vertically integrated water vapor flux was much bigger than the meridional transport. The annual water vapor that passed through Yunnan province couldreach 1. 72 X l〇12 tons. The water vapor during January to May was net output, but it shifted to net input during June to December.The annual water vapor was net input in total, which was about 2. 0 X l〇n tons.

关 键 词：水汽资源 时空分布 特征研究 云南 

分 类 号：X16[环境科学与工程—环境科学]