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The Dual-frequency Precipitation Radar (DPR) installed on the Global Precipitation Measurement (GPM) core satellite was developed by JAXA and NICT. This paper describes mission objectives, technical performance, resource allocation, ground test results, orbital check out results and orbital operation status of the DPR. The DPR system PFT has completed in February 2012. GPM core spacecraft satellite...
Mass-weighted mean diameter Dm is explicitly estimated in the GPM/DPR algorithms. The spatial and temporal variations of Dm are analyzed by fixing the range of precipitation rates R. Generally, Dm is higher over land than over ocean. In India, the seasonal variation in Dm is shown. Such spatial and temporal variations are clearly seen for heavy precipitation. Compared with the TRMM/PR algorithm, KuPR...
An approach to check accuracy of Ku- and Ka-band dual-frequency radar techniques for retrieval of rain rate and rain drop size distribution (DSD) is studied by using measured DSD data. The radar retrieval look-up tables introduced are effective not only in inferring rain rate and DSD parameters but also in evaluating overall performance of retrieval algorithms. As an example of the methods used for...
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