International coordination to improve studies of changes in Arctic sea ice cover

Climate and Cryosphere Arctic Sea Ice Workshop; Boulder, Colorado, 31 October to 2 November 2011 The Arctic sea ice cover is undergoing tremendous changes. The end‐of‐summer ice extent is decreasing, the ice is thinning, and there is a fundamental shift from perennial to seasonal ice. These changes have important implications for both the Arctic and the global climate system. This importance creates a need to observe and understand the ongoing changes and to predict future changes in the Arctic sea ice cover