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Investigating the Potential of Using Satellite‐Based Precipitation Radars as Reference for Evaluating Multisatellite Merged Products
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2018
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Source: Journal of Geophysical Research: Atmospheres, 123(16), 8646-8660
[PDF-1.85 MB]
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Journal Title:Journal of Geophysical Research: Atmospheres
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Description:This work investigates the viability of using the Global Precipitation Mission (GPM) Dual-frequency Precipitation Radar (DPR) as a reference for evaluating multisatellite precipitation products inlocations where a ground-based reference is not available. The Integrated Multi-Satellite Retrievals for Global Precipitation Measurement (IMERG) version V05 products (early, late, and final) and the microwave-only (MW) and infrared-only (IR) components are evaluated against two reference data sets, derived from theMulti-Radar/Multi-Sensor System suite of products (MRMS) and the level-2 DPR (2ADPR). The analysis focuses on a 2-year period (2014 –2015), excluding winters to evaluate liquid-phase precipitation only. Systematic and random errors are assessed between the satellite-based products and the MRMS-based reference.Systematic error for the IMERG early, late, and final products and the MW component are shown to be comparable to those of 2ADPR, while the IR component exhibits a larger bias. Random errors of the IR
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Source:Journal of Geophysical Research: Atmospheres, 123(16), 8646-8660
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ISSN:2169-897X;2169-8996;
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