The cryosphere – frozen precipitation, snow cover, sea ice, lake and river ice, glaciers, ice caps, ice sheets, permafrost and seasonally frozen ground – is a critically important component of the Arctic Climate System. Global climate, water and weather as well as other environmental areas are also highly influenced by the cryosphere. It is a major indicator of global climate change and plays a fundamental role in Earth’s climate system. The WMO Global Cryosphere Watch (GCW), initiated in 2011, provides authoritative info
The WMO World Weather Research Programme’s Polar Prediction Project aims to advance the science in numerical models, data acquisition and assimilation, ensemble forecast methods, verification, and the production of prediction products – all with a polar emphasis.