人民长江2017，Vol.48Issue(6)：38-41,51,5.DOI:10.16232/j.cnki.1001-4179.2017.06.009
乌苏里江流域TRMM降水数据精度评价与修正
Accuracy evaluation and correction methods of TRMM satellite precipitation data in Ussuri River basin
摘要
Abstract
Taking the ground site observation precipitation as the benchmark data,the accuracy of the daily and monthly precipitation product 3B42V7 and 3B42RT of Tropical Rainfall Measuring Mission(TRMM)in flood season in Ussuri River basin,Heilongjiang Province,are evaluated.The results show that on the time scale the TRMM 3B42V7 and 3B42RT daily precipitation data are systematically smaller than the ground site precipitation data,and their correlation coefficients to the site precipitation are not good,in contrast,the deviation degree between 3B42RT and site precipitation is smaller and the correlation coefficient is better than that of 3B42V7;the monthly precipitation data accuracy of the two products have greatly increased,and the gap between the daily data is close;on the spatial scale,both of the TRMM 3B42V7 and 3B42RT satellite precipitation data can commendably reflect the spatial distribution characteristics of precipitation in Ussuri River basin.In view of the evaluation results,the addition and multiplication model are used to amend the two TRMM satellite monthly precipitation data.The correction results show that the monthly precipitation accuracy of the two precipitation data all have increased,and the correction results of addition model is better than multiplication model.Therefore,the 3B42RT monthly precipitation data amended by addition model can be used for the related hydrological research in flood season in Ussuri River basin.关键词
精度评估/修正模型/TRMM/3B42V7/3B42RT/乌苏里江流域Key words
accuracy evaluation/correction model/TRMM/3B42V7/3B42V7RT/Ussuri River basin分类
天文与地球科学引用本文复制引用
石晓丹,王加虎,满霞玉,顾雯,申瑞凤..乌苏里江流域TRMM降水数据精度评价与修正[J].人民长江,2017,48(6):38-41,51,5.基金项目
国家自然科学基金项目(41271042) （41271042）
