Volume 34 Issue 4
Apr.  2009
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ZHAI Ning, WANG Zemin, WU Yue, YE Congyun. Recovery of Yangtze River Basin Water Storage Variations by GRACE Observations[J]. Geomatics and Information Science of Wuhan University, 2009, 34(4): 436-439.
Citation: ZHAI Ning, WANG Zemin, WU Yue, YE Congyun. Recovery of Yangtze River Basin Water Storage Variations by GRACE Observations[J]. Geomatics and Information Science of Wuhan University, 2009, 34(4): 436-439.
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Recovery of Yangtze River Basin Water Storage Variations by GRACE Observations

  • 1Chinese Antarctic Center of Surveying and Mapping,Wuhan University,129 Luoyu Road,Wuhan 430079,China;2Key Laboratory of Polar Surveying and Mapping SBSM,Wuhan University,129 Luoyu Road,Wuhan 430079,China;3Zhuhai Ocean and Fishery Environment Monitoring Center,465 East Meihua Road,Zhuhai 519000,China;4Key Lab.of Geological Hazards on Three Gorges Reservoir Area of Ministry of Education,Three Gorges University, 8 Daxue Road,Yichang 443002,China;5School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China

Funds: 中国极地科学战略研究基金资助项目；国家测绘局重点项目极地基础测绘保障资助项目
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  • Received Date: January 19, 2009
  • Revised Date: January 19, 2009
  • Published Date: April 04, 2009
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  • Using 43 monthly gravity models observed by GRACE satellites from January 2003 to September 2006,we estimate Yangtze River basin water storage variations.We examine how treatment of C20 and one-degree harmonics affect GRACE based the estimation of basin-scale water storage changes,using independently derived C20 harmonic from satellite laser ranging(SLR) observations and one-degree harmonics from geocenter seasonal variations.GRACE based water storage changes are compared with estimation from CPC hydrological model.Results show remarkably good agreement with CPC in the Yangtze River basin.Combining GRACE observations with SLR degree-2 spherical harmonic and geocenter seasonal variations apparently improves the estimation inYangtze River basin.
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