The World Meteorological Organization (WMO) is GCW's primary sponsor.
Many national agencies - primarily the national meteorological and hydrological services (NMHS) - support GCW by providing personnel for GCW teams and working groups, observing stations, and data. These include, but are not limited to, the Australian Department of the Environment, the Arctic and Antarctic Research Institute (Russia), the China Academy of Sciences, the China Meteorological Administration, Environment Canada, the European Centre for Medium-Range Weather Forecasts, the Finnish Meteorological Institute, the Geological Survey of Denmark and Greenland, the National Council of Research (Italy), the Icelandic Meteorological Office, the Laboratoire de Glaciologie et Géophysique (France), the Norwegian Meteorological Institute, the University of Graz (Austria), the Japan Agency for Marine-Earth Science and Technology, the National Meteorological Service (Argentina), the National Oceanic and Atmospheric Administration (USA), the Swiss Federal Institute for Forest, Snow and Landscape Research, and the Zentralanstalt für Meteorologie und Geodynamik (Austria). These and other national agencies and institutions have also provided Focal Points as national contacts for issues related to the cryosphere.
The following agencies and institutions have provided support for the GCW data catalogue (portal) and the GCW information website: The Norwegian Meteorological Institute, National Oceanic and Atmospheric Administration (NOAA), the University of Wisconsin-Madison's Space Science and Engineering Center (SSEC), and the NOAA/NASA Joint Polar Satellite System (JPSS) program.
Other agencies and institutions have supported and/or hosted GCW workshops. These include Zentralanstalt für Meteorologie und Geodynamik (ZAMG), Environment Canada (EC), the China Meteorological Administration (CMA), the Icelandic Met Office (IMO), the WSL Institute for Snow and Avalanche Research SLF, the Geological Survey of Denmark and Greenland (GEUS), the Ministry of Foreign Affairs of Chile, the University of Magallanes, Chile (UMAG), the Chilean Weather Directorate (DMC), the Chilean Water Directorate (DGA), the University of Talca, Chile (UTAL), Geoestudios, Chile, the Arctic and Antarctic Research Institute (AARI, Russia) and the Yamal-Nenets Autonomous Okrug (YaNAO).
Many other agencies and institutions, too numerous to list here, have supported GCW indirectly through the contributions of their scientists. Their support is appreciated.
Disclaimer: Identifying these agencies/institutes here does not imply their endorsement of GCW.