Tag: Ice

Arctic, topography and bathymetry
The Arctic is extremely diverse in terms of landscapes, varying from pack and drift ice to rugged shores, flat coastal plains, rolling hills and mountains surpassing 6000 metres above sea level (Denali, 6,194 m asl, in s...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Permafrost distribution in the Arctic
Most of the Arctic is covered by ice and snow for more than eight and even up to twelve months a year, but conditions are highly variable, ranging from snow several metres deep each winter to the polar deserts of norther...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Coastal Arctic food web (drift ice)
The coastal Arctic food web is closely related to drift ice conditions and seasonal use of shorelines by both terrestrial and sea mammals. Numerous species depend upon each other and the transport of food to and from the...
17 May 2005 - by UNEP/GRID-Arendal
Projected changes in the Arctic climate, 2090
The averages of the scenarios in the Arctic Climate Impact Assessment (ACIA) are presented in this figure, for the year 2090, with the surface temperatures over land, the size of the polar ice cap, and the outer limits o...
17 May 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Industrial development in the Arctic
Industrial development in the Arctic. The Arctic has been opened up for increased exploration of petroleum, gas and mining activities. The Barents Sea, the Mackenzie Valley in Canada and the Alaskan North Slope, are the ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Satellite observations in Arctic sea ice, 1979 and 2003
This oblique view of the Arctic polar ice cap in September shows the significant reduction that has happened over a time period just over 20 years, from 1979 to 2003. Future predicitions shows even more drastic reduction...
17 May 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Dates of river ice break-up in the Arctic
Dates of river ice break-up in the Arctic
21 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
How much sea ice will be left in 2050?
Climate simulations suggest continued rapid loss of Arctic sea-ice. The observations of indigenous peoples also indicate unprecedented change. The loss of the Arctic sea-ice will have vast impacts on climate, livelihoods...
21 Mar 2006 - by Author: K. Dixon & H. Vahlenkamp, October 1998, December 1999, February 2004; Layout: Petter Sevaldsen (UNEP/GRID-Arendal)
Unalakleet community in Alaska
Location and Climate: Unalakleet is a small coastal community on Norton Sound, at the mouth of the Unalakleet River, 395 miles northwest of Anchorage, Alaska. Unalakleet has a sub-Arctic climate with considerable influen...
21 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Dates of river ice freeze-up in the Arctic
Presenting the relative dates of river freeze-up in the Arctic and the climatic condititions surrounding that, thus outlining the relative changes in temperature and conditions throughout the circumpolar Arctic.
21 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Projected changes in Arctic pack ice
The averages of the scenarios in the Arctic Climate Impact Assessment (ACIA) for the Arctic pack ice sheet (the permanent ice) are presented in this map, with the successive decrease in the ice up to 2090.
18 Aug 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry
The Arctic is extremely diverse in terms of landscapes, varying from pack and drift ice to rugged shores, flat coastal plains, rolling hills and mountains surpassing 6000 metres above sea level (Denali, 6,194 m asl, in s...
18 Aug 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Projected changes in Arctic pack ice
The averages of the scenarios in the Arctic Climate Impact Assessment (ACIA) for the Arctic pack ice sheet (the permanent ice) are presented in this map, with the successive decrease in the ice up to 2090.
01 Jul 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry
The Arctic is extremely diverse in terms of landscapes, varying from pack and drift ice to rugged shores, flat coastal plains, rolling hills and mountains surpassing 6000 metres above sea level (Denali, 6,194 m asl, in s...
01 Jul 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Sea level rise and assessment of the state of the marine environment
A significant sea level rise is one of the major anticipated consequences of climate change. This will cause some low-lying coastal areas to become completely submerged, while others will increasingly face short-lived hi...
01 Oct 2009 - by Philippe Rekacewicz
A World of Salt
Global water type by percentage. Estimates of global water resources based on several different calculation methods have produced varied estimates. Shiklomanov in Gleick (1993) estimated that: - The total volume of wat...
26 Jan 2009 - by Phillippe Rekacewicz, February 2006
Freshwater resources: volume by continent
Glaciers and ice caps cover about 10% of the world’s landmass. These are concentrated in Greenland and Antarctica and contain 70% of the world’s freshwater. Unfortunately, most of these resources are located far from hum...
01 Oct 2009 - by Philippe Rekacewicz (Le Monde diplomatique)
Sea Ice Anomaly in Northern Hemisphere
Arctic sea-ice reductions have significant impacts on climate, wildlife and communities. The opening of open water across the Arctic ocean will have unknown consequences in terms of changes in water circulation and redis...
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Sea Level Anomalies
Melting and warming will have consequences on ocean circulation. Additionally melting of inland glaciers and continental ice sheets on Greenland and Antarctica, and the thermal expansion of ocean waters are causing sea l...
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Global sea-level rise
According to the 2007 IPCC report, global average sea level rise will vary from 18 cm to 59 cm by 2100. The IPCC models did not account for the accelerated melting of ice sheets in Greenland and Antarctica. Some of th...
01 Oct 2010 - by Riccardo Pravettoni, UNEP/GRID-Arendal
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