Validation of the Version 05 Level 2 precipitation products from the GPM Core Observatory and constellation satellite sensors

摘要: The accurate measurement of precipitation, an essential source freshwater, is key for assessing water resources and precipitation-related hazards across the globe. global precipitation hampered by inadequate spatial distribution ground-based observations such as gauges weather radars. However, satellite instruments can provide from which estimates may be generated. satellites Global Precipitation Measurement (GPM) constellation carry passive microwave sensors that set Goddard PROFiling (GPROF 2017v1) scheme used to retrieve precipitation. regional consistency differences in retrievals need documented order refine improve form basis widely-used gridded products. Here Level 2 instantaneous swath-based products generated GPROF are evaluated using standard descriptive statistical scores against national/international surface radar dense gauge datasets, over United States Western Europe. Results show Europe current retrieval technique tends overestimate occurrence light leading overestimation volumetric contribution intensities, while it underestimates moderate heavy Over US reduced, with a more pronounced underestimation heavier intensities.