Global comparison IMERG CFSR surface precipitation stations

This research paper compares the Integrated MultisatellitE Retrievals for GPM (IMERG) and Climate Forecast and System Reanalysis (CFSR) precipitation products against in-situ data from NOAA surface stations between 2001 and 2020 to guide the selection of satellite rainfall products for hydro-climatic applications in data-limited regions.

• A global comparison across 5 geographical regions, 7 continents, 105 countries, and approximately 50,000 surface stations from 2001 to 2020 indicates that IMERG provides a satisfactory to good simulation of monthly rainfall in most areas and outperforms CFSR.
• CFSR showed satisfactory simulation of monthly precipitation in Europe (VE = 0.61), North America (0.56), and Australia (0.56), but was unsatisfactory in other continents. At the country level, IMERG demonstrated a significantly better mean NSE in 64 countries.
• The study introduces the Worldwide Weather Service (W3S), a public web service designed for the preprocessing and dissemination of IMERG precipitation data for use in hydrologic modelling.

APA

Stockholm Environment Institute (2022). Global comparison IMERG CFSR surface precipitation stations. https://www.sei.org/publications/global-comparison-imerg-cfsr-surface-precipitation-stations/

Chicago

Stockholm Environment Institute. Global comparison IMERG CFSR surface precipitation stations. 2022. https://www.sei.org/publications/global-comparison-imerg-cfsr-surface-precipitation-stations/.

Wikipedia

{{cite report |author=Stockholm Environment Institute |title=Global comparison IMERG CFSR surface precipitation stations |date=26 September 2022 |url=https://www.sei.org/publications/global-comparison-imerg-cfsr-surface-precipitation-stations/ |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{stockholmenvironmentinstitute2022global, author = {{Stockholm Environment Institute}}, title = {{Global comparison IMERG CFSR surface precipitation stations}}, institution = {Stockholm Environment Institute}, year = {2022}, month = sep, url = {https://www.sei.org/publications/global-comparison-imerg-cfsr-surface-precipitation-stations/}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }