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Accuracy and spatio-temporal variation of high resolution satellite rainfall estimate over the Ganjiang River Basin

Science China(Technological Sciences) 2013年第4期56卷 853-865页

作者： HU QingFang YANG DaWen WANG YinTang YANG HanBo Department of Hydraulic Engineering Tsinghua University State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Nanjing Hydraulic Research Institute

Based on spatial interpolation rainfall of the ground gauge measurement,we proposed a method to comprehensively evaluate and compare the accuracy of satellite rainfall estimates (SREs) at three spatial scales:0.25°×0.25° grid scale,sub-catchment scale and the whole basin *** this method,we evaluated the accuracy of six high-resolution monthly SREs (TRMM 3B42 V6,3B42RT V6,CMORPH,GSMaP MWR+,GSMaP MVK+ and PERSIANN) and revealed the spatio-temporal variation of the SRE accuracy based on spatial interpolated rainfall from a dense network of 325 gauges during 2003-2009 over the Ganjiang River Basin in the Southeast *** results showed that ground gauge-calibrated 3B42 had the highest accuracy with slight overestimation,whereas the other five uncalibrated SREs had severe *** accuracy of the six SREs in wet seasons was remarkably higher than that in the dry *** the time scale was expanded,the accuracy of SRE,particularly 3B42,***,the accuracy of SREs was relatively low in the western mountains and northern piedmont areas,while it was relatively high in the central and southeastern hills and basins of the Ganjiang River *** the space scale was expanded,the accuracy of the six SREs gradually *** study provided an example for of SRE accuracy validation in other regions,and a direct basis for further study of SRE-based hydrological process.

关键词： satellite rainfall estimate accuracy evaluation spatio-temporal variations TRMM CMORPH GSMaP PERSIANN Ganjiang River Basin

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A FUSING TECHNIQUE WITH satellite PRECIPITATION estimate AND RAINGAUGE DATA

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Acta meteorologica Sinica 2004年第2期18卷 141-146页

作者：卢乃锰游然张文建 Department of Atmospheric Sciences Lanzhou University National satellite Meteorological Center

satellite rainfall estimate can provide rainfall information over large areas,and raingauge can provide point-based ground observations with high *** the combination of satellite and raingauge data together,the estimated rainfall fields are greatly *** combination method,called 'fusing technique',is discussed in this paper,and the validation for this technique is accomplished with HUBEX IOP data.

关键词： fusing technique satellite rainfall estimate raingauge data

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