The Ilulissat Icefjord, registered as a World Heritage Site, is located 250 km north of the Arctic Circle in Greenland.
81% of Greenland's surface is covered by an ice sheet which has a maximum depth of 3,000m. The Sermeq Kujalleq glacier of the Ilulissat Icefjord has been retreating due to global warming since the early 20th century, accelerating in recent years. It retreated 15km in the decade from 1996-2005. NASA and others estimate the glacier released 500,000 cubic metres into the sea in that period.