长江科学院院报 ›› 2019, Vol. 36 ›› Issue (12): 23-27.DOI: 10.11988/ckyyb.20180725

• 水资源与环境 • 上一篇    下一篇

三峡区间TMPA和IMERG卫星降水产品精度评估

王汉涛1, 张潇潇2,3, 赵牧晨1, 舒卫民1   

  1. 1.中国长江电力股份有限公司 三峡水利枢纽梯级调度通信中心,成都 610041;
    2.四川大学 水利水电学院,成都 610065;
    3.四川大学 水力学与山区河流开发保护国家重点实验室,成都 610065
  • 收稿日期:2018-07-11 出版日期:2019-12-01 发布日期:2019-12-20
  • 作者简介:王汉涛(1985-),男,四川成都人,工程师,硕士,主要从事水文水资源方面的研究。E-mail:wang_hantao@cypc.com.cn
  • 基金资助:
    国家重点研发计划项目((2016YFC0402210)

Assessing Accuracy of TMPA and IMERG Satellite Precipitation Products in the Three Gorges Region

WANG Han-tao1, ZHANG Xiao-xiao2,3, ZHAO Mu-chen1, SHU Wei-min1   

  1. 1.Three Gorges Cascade Dispatching &Communication Center, China Yangtze Power Co., Ltd., Chengdu 610041, China;
    2.College of Water Resource and Hydropower, Sichuan University, Chengdu 610065, China;
    3.State Key Laboratory of Hydraulics and Mountain River Engineering, Sichuan University, Chengdu 610065, China
  • Received:2018-07-11 Online:2019-12-01 Published:2019-12-20

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摘要： 为了验证卫星降水产品对地面站点降水观测数据的可替代性,研究利用地面站点观测数据,采用统计分析方法,对三峡区间流域TMPA 3B43V7、GPM IMERG卫星降水产品进行月尺度下的精度评估。结果表明:2种卫星降水产品表现出较好的一致性;在流域上游地势平坦区域纬度较低,卫星降水产品精度相对较差;在流域下游高山峡谷地形纬度较高,卫星降水产品精度较好;卫星降水产品具有替代地面站点降水观测数据的潜力,在三峡区间流域具有一定的适用性。研究成果可为应用卫星降水产品进行三峡区间流域水文模拟、降水趋势分析等奠定基础。

关键词: TMPA, IMERG, 卫星降水产品, 三峡区间, 月平均降水量

Abstract: In an attempt to verify the feasibility of substituting ground observation data with satellite precipitation data, the accuracies of TMPA 3B43V7 and GPM IMERG satellite precipitation products in the Three Gorges Basin were evaluated by statistical analysis based on the observation data from ground sites. The results reflected that TMPA and IMERG showed good consistency. In the upper flat area of the Three Gorges Region with low latitude, the accuracies of satellite precipitation products were poor, whereas in the alpine-gorge area in the lower reach of the Region, the latitude was higher, and the accuracies were better. Satellite precipitation products have the potential of replacing ground site precipitation data, and are applicable in the study basin.

Key words: TMPA, IMERG, satellite precipitation product, Three Gorges Region, monthly average precipitation

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