水资源与水工程学报Issue(5)：89-92,97,5.DOI:10.11705/j.issn.1672-643X.2014.05.020
TRMM 卫星降水数据在老哈河流域的精度评估
Evaluation of accuracy of Laoha river basin by data of TRMM satellite precipitation
摘要
Abstract
Taking the ground site observation rainfall precipitation as benchmark data,the paper assessed the precision of the latest generation precipitation product 3B42V7 of tropical rainfall observation plan (TRMM) in Laoha river basin basin in northern semi -arid area.The result shows that the TRMM 3B42V7 in a benchmark Laoha river basin basin precipitation system is larger, the average deviation is 17.46%, the correlation coefficient is 0.73, the, the precision of satellite daily precipitation is relative high in average sense;But TRMM 3 B42 V7 absolute deviation reaches 81 .26%, the precision of satellite precipitation in an absolute sense is low;After the deviation calibration of month GPCC ground rainfall, the precision of TRMM 3B42V7 on month scale has greatly increased,the absolute deviation is 21.95%, the correlation coefficient is 0.98;The accuracy of TRMM 3B42V7 has obvious correlation with latitude and elevation; TRMM 3 B42 V7 can better reflect the spatial distribution characteristics of precipitation and precipitation events in Laoha river basin basin,.Therefore ,TRMM 3 B42 V7 can be used for the sim-ulation of monthly scale hydrological process, the evaluation and planning research of water resources in Laoha river basin watershed.关键词
卫星降水/TRMM 3B42V7/精度评估/老哈河流域Key words
satellite precipitation/TRMM 3B42V7/accuracy assessment/Laoha river basin分类
建筑与水利引用本文复制引用
李剑锋,佘文婧,江善虎,石琳..TRMM 卫星降水数据在老哈河流域的精度评估[J].水资源与水工程学报,2014,(5):89-92,97,5.基金项目
中央高校基本科研业务费专项资金资助项目 （）
