Evaluation of GPM DPR Precipitation Products After Orbit Boost Using Disdrometers in Italy
Year: 2025
Type: article
Abstract: Precipitation measurements are crucial for improving climate models and weather forecasting, with satellite-based radar systems, such as the Dual Precipitation Radar (DPR) on board the Global Precipitation Measurement Core Observatory (GPM CO), playing a pivotal role in enhancing observational coverage, especially in remote regions. In November 2023, an orbit boost maneuver raised the GPM CO’s altitude from 400 km to 435 km, potentially influencing the quality of DPR data. This study evaluates the impact of this altitude increase on the accuracy of DPR-derived precipitation products by comparing data acquired before and after the orbit boost. We assess the performance of DPR measurements against ground-based laser disdrometer data collected in Italy between May 2018 and November 2024. The results highlight the effects of the altitude change on rainfall retrievals, contributing to a better understanding of how orbital adjustments can affect satellite-based precipitation observations.
Institutions: Institute of Atmospheric Sciences and Climate, National Research Council, University of L'Aquila, Parthenope University of Naples, Politecnico di Milano, Institute of Electronics, Computer and Telecommunication Engineering, Agenzia Regionale per la Protezione Ambientale del Piemonte, Wallops Flight Facility, National Aeronautics and Space Administration
Language: English
Subfield: Atmospheric Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Climate action
Open Access status: hybrid
Estimated APC paid: $2,645
Funder: Agenzia Spaziale Italiana
OpenAlex ID: W4416798017
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