水土保持通报2017，Vol.37Issue(2)：171-176,6.DOI:10.13961/j.cnki.stbctb.2017.02.026
GPM与TRMM降水数据在海河流域的精度对比研究
Comparison Study on Accuracies of Precipitation Data Using GPM and TRMM Product in Haihe River Basin
魏志明 1岳官印 2李家 1吕天阳3
作者信息
- 1. 辽宁师范大学城市与环境学院,辽宁大连116029
- 2. Esri中国信息技术有限公司,北京100027
- 3. 大连国家海域使用动态监视监测管理中心,辽宁大连116011
- 折叠
摘要
Abstract
[Objective] The accuracies of GPM and TRMM precipitation data were measured to evaluate the applicability of TRMM and GPM data in the Haihe River basin.[Methods] The precipitation products from April to October 2014 in the Haihe River basin were compared with the corresponding data measured with rain gauges from 35 meteorological stations.the coefficient of determination R2 and relative error BIAS were used as statistical indicators to evaluate the performance of GPM(global precipitation measurement) and TRMM (tropical rainfall measuring mission).[Results] GPM performed slightly better than TRMM did.The coefficient of determination R2 between satellite precipitation product and in-situ data were 0.758 2 and 0.760 7 for TRMM and GPM,the slope K were 0.810 5 and 0.833 5,respectively.Although the difference between TRMM and GPM was minor and both of them underestimated the real precipitation,accuracies of them still were relative high.[Conclusion] GPM IMERG precipitation product has potentially good application prospect in monthly scale hydrology for its high spatial resolution.关键词
GPM/TRMM/降水数据/精度评价Key words
GPM/TRMM/precipitation data/evaluation分类
天文与地球科学引用本文复制引用
魏志明,岳官印,李家,吕天阳..GPM与TRMM降水数据在海河流域的精度对比研究[J].水土保持通报,2017,37(2):171-176,6.
