Recent Accessments
Joint IPWG-GDAP Precipitation Assessment – June 2021
This comprehensive report reviews the current state of precipitation products, and includes assessments of sub-daily global satellite precipitation products, discussions of various climate applications of precipitation products, and deliberations on emerging directions and the future of precipitation products.
Chairs: Rémy Roca and Ziad Haddad
Precipitation Assessment Report – May 2008
Evaluating the reliability of available, global, long-term precipitation data products in depicting the variations of precipitation at larger-than-weather scales with a special emphasis on the GPCP product.
Chairs: Arnold Gruber and Vincenzo Levizzani
Cloud Assessment Report – Nov. 2012
Chairs: Claudia Stubenrauch
(2006 – Present) and
Stefan Kinne
(2008 – Present)
Assessing the reliability of global, long-term cloud data sets.
Database is available on the Cloud Assessment website.
Updated Cloud Assessment (February 2024)
Updated Database available at: https://gewexca.aeris-data.fr/
Radiative Flux Assessment – Dec. 2012
Providing a forum for consistent analysis of long-term radiative flux products, primarily top-of-atmosphere and surface fluxes, to establish a foundation for better global radiation budget analysis.
Chair: Paul Stackhouse (2004 – Present)
Ongoing Assessments
Aerosol Assessment
Assessing the quality and compatibility of global aerosol products with a focus on the Global Aerosol Climatology Project (GACP).
Chairs: Sundar Christopher (2008 – Present) and Jeffrey Reid (2008 – Present)
Quantifying the state of the art in water vapor products being constructed for climate applications.
