DMI's Center for Ocean and Ice Services. Information about the state of the sea and sea ice


SWIPA (Snow, Water, Ice and Permafrost in the Arctic)
Access to the new 2017 full report (successor of the 2011 report), with executive summary and films. From AMAP (Arctic Monitoring and Assessment Programme)


Background material and news about Arctic sea ice from NSIDC (National Snow & Ice Data Center, USA)


Arctic report card. Annual updates. From NOAA (National Oceanic and Atmospheric Administration)