基于TRMM数据的汉江流域1998年-2010年降水变化特征  

Variation Characteristics Analysis of the Precipitation from 1998 to 2010 in Hanjiang Basin Based on the TRMM Data

作　　者：李景刚[1] 黄诗峰[2] 

机构地区：[1]南水北调中线干线工程建设管理局,北京100038 [2]中国水利水电科学研究院遥感技术应用中心,北京100048

出　　处：《南水北调与水利科技》2011年第6期48-53,共6页South-to-North Water Transfers and Water Science & Technology

基　　金：水利部公益性行业科研专项经费项目(201001045201001078)

摘　　要：汉江作为长江中游的最大支流和南水北调中线工程的水源地,其水资源补给主要靠流域降水,因此研究流域降水量的时空分布及其变化特性,对于流域水资源的合理开发与利用具有重要意思。论文采用1998年1月-2010年12月空间连续分布的TRMM卫星3B43月降水量资料,借助气候倾向率指数和GIS空间分析技术,对汉江流域近13年来的降水时空分布及其变化特征进行了定量化分析。从而为维系流域水资源供需平衡、生态环境可持续发展以及南水北调中线水量合理调配,提供基础数据和科学依据。As the biggest tributary of Yangtze River and the waterhead areas of South-to-North Water Diversion Middle Route Project, the supply of water resources in Hanjiang River depends mainly on precipitation. It is very important to research the ba sin precipitation＇s spatiotemporal distribution and variation characteristics for the rational exploitation and utilization of water re sources in Hanjiang Basin. In this paper,according to the monthly precipitation data of Tropical Rainfall Measurement Mission （TRMM） 31343 from January 1998 to December 2010, the changes of recent 13-year precipitation in Hanjiang Basin were ana- lyzed by means of the linear climatic tendencies ratio method and Geographical Information System （GIS） spatial analytic tech niques. The result provided good basic data and scientific foundation for the maintainment of water resource supply-demand bal- ance and ecological environment sustainable development in Hanjiang Basin, and for the reasonable allocation of water resources in South-to North Water Diversion Middle Route Project.

关 键 词：TRMM 降水变化 汉江流域 南水北调中线 

分 类 号：P458.121[天文地球—大气科学及气象学]