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Jakobshavn Isbrae and ice fjord, showing locations of the calving ice front in years from 1851 to 2006, together with flow velocity observations Jakobshavn Isbrae and ice fjord, showing locations of the calving ice front in years from 1851 to 2006, together with flow velocity observations
The glacier extends through the Illulisat Icefjord, surrounded by mountains. Icebergs calve off from the main glacier, pile up and block the fjord before being released into Qeqertarsuup Tunua (Disko) Bay and Davis Strait. The whiter areas in the fjord are piledup icebergs and the “real” glacier ends where the greyish striped section ends – showing that this image is from 2001. The graph shows glacier-velocity profiles for 1985 to 2006. During th...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Greenland, showing rates of surface-elevation change between the late 1990s and 2003 Greenland, showing rates of surface-elevation change between the late 1990s and 2003
Mass-balance estimates for Greenland show thickening at high elevations since the early 1990s at rates that increased to about 4 cm per year after 2000, consistent with expectations of increasing snowfall in a warming climate. However, this mass gain is far exceeded by losses associated with large increases in thinning of the ice sheet near the coast. Total loss from the ice sheet more than doubled, from a few tens of billions of tonnes per year ...
18 Apr 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Greenland (Denmark), ice cap, topography and bathymetry Greenland (Denmark), ice cap, topography and bathymetry
Greenland is located in Northern North America, a large island between the Arctic Ocean and the North Atlantic Ocean, northeast of Canada, comprising 2,166,086 sq km. It has an estimated population of 56,375 (2005) and is managed with self-rule under Denmark. The world's largest island, Greenland is about 81% ice-capped. Major environmental concerns are: protection of the arctic environment; climate change and preservation of the traditional way ...
03 Oct 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Greenland, showing rates of surface-elevation change between the late 1990s and 2003 Greenland, showing rates of surface-elevation change between the late 1990s and 2003
Mass-balance estimates for Greenland show thickening at high elevations since the early 1990s at rates that increased to about 4 cm per year after 2000, consistent with expectations of increasing snowfall in a warming climate. However, this mass gain is far exceeded by losses associated with large increases in thinning of the ice sheet near the coast. Total loss from the ice sheet more than doubled, from a few tens of billions of tonnes per year ...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Advancement of phenological events in high-arctic Greenland Advancement of phenological events in high-arctic Greenland
It is clear from lower latitudes that phenological trends are linked to temperature changes and experimental warming also results in earlier plant phenology. Yet, in Arctic and alpine ecosystems, the melting of the winter snow pack rather than temperature per se determines the onset of biological activity like the timing of flowering in plants and emergence in invertebrates. As such, the phenology of these groups of organisms, or taxa, could be a...
17 Mar 2010 - by Hugo Ahlenius, GRID-Arendal & CAFF
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Greenland, indigenous population Greenland, indigenous population
Depending on the definition of the boundaries of the region, the Arctic is home to some 4 million inhabitants. Roughly one-third of this total population is indigenous peoples, spread over numerous communities around the Arctic. The indigenous proportion of each polar region varies significantly- from 88% of the regional population in Nunavut Territory in Canada (the Inuit), to 2.5% in the North of Scandanavia and the Kola Peninsulathat (the Saa...
03 Oct 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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