Tag: Ice

Sea level rise due to the melting of mountain and subpolar glaciers
Oceans change as a result of the impact of climatic variability on glaciers and ice caps that further contributes to fluctuation sin sea leve. Observational and modelling studies of glaciers and ice caps indicate an ave...
17 May 2005 - by UNEP/GRID-Arendal
Cooling factors
The amount of aerosols in the air has direct effect on the amount of solar radiation hitting the Earth's surface. Aerosols may have significant local or regional impact on temperature. Water vapour is a greenhouse gas, b...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Global atmospheric concentration of CO2
Atmospheric CO2 has increased from a pre-industrial concentration of about 280 ppmv to about 367 ppmv at present (ppmv= parts per million by volume). CO2 concentration data from before 1958 are from ice core measurements...
17 May 2005 - by UNEP/GRID-Arendal
The decrease of Arctic sea ice, minimum extent in 1982 and 2007, and climate projections [Norwegian]
Sattelite observations of the september extent of sea ice in the Arctic shows in 2007 shows a 23% decrease from the previous minimum, in 2005, and 39% below the average minimum extent for the time period 1979-2000. The b...
28 Sep 2005 - by Hugo Ahlenius, 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...
28 Sep 2005 - by UNEP/GRID-Arendal
The decrease of Arctic sea ice, minimum extent in 1982 and 2007, and climate projections
Sattelite observations of the september extent of sea ice in the Arctic shows in 2007 shows a 23% decrease from the previous minimum, in 2005, and 39% below the average minimum extent for the time period 1979-2000. The b...
01 Dec 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Estimated contributions to sea-level rise (1993-2003)
The two main reasons for sea-level rise are thermal expansion of ocean waters as they warm, and increase in the ocean mass, principally from land-based sources of ice (glaciers and ice caps, and the ice sheets of Greenla...
01 Oct 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Plankton distribution changes, due to climate changes - North Sea
With melting sea ice and warming of the oceans, marine species change their distributions, affecting entire food chains and ocean productivity. In 2005 the subtropical dinoflagellate Ceratium hexacanthum was found in CPR...
01 Feb 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Global freshwater resources: quantity and distribution by region
Glaciers and icecaps contain approximately 70% of the world's freshwater, but groundwater is by far the most abundant and readily available source of freshwater. This graphic illustrates the quantity (in cubic kilometres...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
World's water cycle: schematic and residence time
The water cycle consists of precipitation, evaporation, evapotranspiration and runoff. This graphic explains the global water cycle, showing how nearly 577 000 km3 of water circulates through the cycle each year. A table...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Arctic, topography and bathymetry (topographic map)
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...
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry (topographic map)
The Arctic represents the northermost area of the World, the Arctic Ocean and the land areas that surrounds it. The region is characterized but cold temperatures, and ice and snow. The summers are short, but with long pe...
01 Oct 2010 - by Hugo Ahlenius, UNEP/GRID-Arendal
Arctic, topography and bathymetry
(See http://maps.grida.no/go/graphic/arctic-topography-and-bathymetry1 for an updated version of this map) The Arctic is extremely diverse in terms of landscapes, varying from pack and drift ice to rugged shores, flat co...
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Antarctica, topography and bathymetry (topographic map)
Antarctic is the fifth largest continent of the world at 14 million square kilometres and is covered by a permanent continental ice sheet. The ice is distributed in two major ice sheets, the East Antarctic and the West A...
04 Oct 2005 - 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...
04 Oct 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Antarctica, topographic map
Antarctic is the fifth largest continent of the world at 14 million square kilometres and is covered by a permanent continental ice sheet. The ice is distributed in two major ice sheets, the East Antarctic and the West A...
01 Jun 2007 - 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
Antarctica, overview
Antarctic is the fifth largest continent of the world at 14 million square kilometres and is covered in a permanent continental ice. The ice is distributed in two major ice sheets, the East Antarctic and the West Antarct...
04 Oct 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
Water towers of Asia - glaciers, water and population in the greater Himalayas-Hindu Kush-Tien Shan-Tibet region
The Himalayas–Hindu Kush, Kunlun Shan, Pamir and Tien Shan mountain ranges function as water towers, providing water to people through much of Asia. The glacier-fed rivers originating from the Himalaya mountain ranges su...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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 i...
03 Oct 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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