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An assessment of different microwave sensor specifications on rainfall retrieval performance
Shin, Dong Bin,Kummerow, Christian 대한원격탐사학회 2001 International Symposium on Remote Sensing Vol.17 No.1
The Global Precipitation. Mission (GPM) is currently in the planning stages at National Aeronautics and Space Administration (NASA) and Japan's National Space Development Agency (NASDA). The goal of GPM is to provide global 3-hr rainfall products for use in climate as well as numerical weather prediction. The 3-hr goal is to be met by flying a constellation of small satellites carrying passive microwave sensors. Because these sensors can have different characteristics, a truly physical algorithm is necessary to address issues of consistency in the rainfall products among this diverse suite of sensors. The algorithm discussed here uses cloud structure information from the Tropical Rainfall Measuring Mission (TRMM) radar observations and is designed to eliminate empirically adjusted parameters of passive microwave rainfall algorithms such as screening rain area, beam-filling corrections, etc. In this study, we examine the accuracy of retrieved rainfall fields for several microwave sensors being considered for GM. The algorithm performance is also compared tv the TRMM operational algorithms.