Global comparison IMERG CFSR surface precipitation stations

The study compares the Integrated MultisatellitE Retrievals for- Global Precipitation Measurement (IMERG) and Climate Forecast and System Reanalysis (CFSR) products against approximately 50,000 in-situ surface stations globally. The results indicate that IMERG generally outperforms CFSR in simulating monthly rainfall across most regions, continents, and countries. Specifically, IMERG showed significantly better mean Nash-Sutcliffe Efficiency (NSE) in 64 countries. While CFSR provided satisfactory simulations for Europe, North America, and Australia, it was unsatisfactory for other continents. To facilitate the use of high-quality data for hydrologic modelling, the authors introduced the Worldwide Weather Service (W3S) for the preprocessing and dissemination of IMERG precipitation data.

• IMERG generally provides a satisfactory to good simulation of monthly rainfall across most analyzed regions, continents, countries, and stations, outperforming the CFSR product.
• CFSR showed satisfactory monthly precipitation simulations only for Europe (VE = 0.61), North America (0.56), and Australia (0.56), while simulations for other continents were unsatisfactory.
• IMERG demonstrated a significantly better mean Nash-Sutcliffe Efficiency (NSE) compared to CFSR in 64 different countries.

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} }