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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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Human impact, Arctic Russia 2002 and scenarios Human impact, Arctic Russia 2002 and scenarios
Presentation of impact analysis from the Europe and Asia GLOBIO2 analysis and scenarios prepared for the GEO-3 publication. Much of Arctic Russia is very sparsely populated and will remain one of the World's few wilderness areas.
26 Jan 2006 - by Hugo Ahlenius and Robert Barnes, UNEP/GRID-Arendal
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Human impact, Norway 2002-2050 (with protected areas) Human impact, Norway 2002-2050 (with protected areas)
Analysis of the suggested development of impact on ecosystems through human activities. The GLOBIO-2 model uses settlements and infrastructure, such as roads, pipelines and powerlines as proxies for stress and fragmentation.
26 Jan 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Human impact, Northern Norway 1600 and 2002-2052 Human impact, Northern Norway 1600 and 2002-2052
Analysis of the suggested development of impact on ecosystems through human activities. The GLOBIO-2 model uses settlements and infrastructure, such as roads, pipelines and powerlines as proxies for stress and fragmentation.
26 Jan 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Human Impact, Southern Norway 2002 Human Impact, Southern Norway 2002
Presentation of impact analysis from the Europe GLOBIO2 analysis and scenarios prepared for the GEO-3 publication. In addition to the human impact on the mountains of Southern Norway this also displays selected protected areas.
26 Jan 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Human Impact, Southern Norway 2052 Human Impact, Southern Norway 2052
Presentation of impact analysis from the Europe GLOBIO2 analysis and scenarios prepared for the GEO-3 publication. In addition to the human impact on the mountains of Southern Norway this also displays selected protected areas.
26 Jan 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Rainwater partitioning in India Rainwater partitioning in India
India is facing a food supply challenge with more than one billion inhabitants, and out of them 35% below the poverty line. This analysis of the rainwater partitioning show that there is room for India to use more water than the current status, to increase food production, and ultimately reduce poverty (MDG1)– while still retaining healthy aquatic ecosystems (11% of the rainwater needed for MDG7). A similar analysis conducted for Kenya show, for ...
20 Sep 2005 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Loss of Great Ape habitat 2002-2032 (Africa) Loss of Great Ape habitat 2002-2032 (Africa)
Based on population pressures the GLOBIO2 model has assessed the current and future human impacts on Great Ape habitat in Africa (Chimpanzee, Bonobo and Gorilla). The analysis shows a vast reduction of some of the world's remaining wilderness areas. (this poster prepared for the UNESCO GRASP meeting in November 2003)
02 Nov 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Human impact - Asian continent Human impact - Asian continent
Continental Asia is a hotspot for both biodiversity, wilderness abut also home to a majority of the World's population. The GLOBIO analysis shows that this region has seen quite significant human impacts, but with remaining wilderness in areas that has so far not been very attractive for human development - the Himalayas, the Tibetan highlands, and the Arctic regions of Russia.
04 Oct 2005 - by Torstein Olsen and Einar Lieng, Statens Kartverk (for UNEP/GRID-Arendal)
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Human impact - Africa Human impact - Africa
Africa is home to some of the greatest wilderness areas in the world, as well as some of the greatest biodiversity hotspots. The GLOBIO analysis shows that the great deserts and the Central African rain forests have huge remaining tracts that show low human impact and development.
27 Feb 2005 - by Torstein Olsen and Einar Lieng, Statens Kartverk (for UNEP/GRID-Arendal)
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Human impact - Asian continent Human impact - Asian continent
Continental Asia is a hotspot for both biodiversity, wilderness abut also home to a majority of the World's population. The GLOBIO analysis shows that this region has seen quite significant human impacts, but with remaining wilderness in areas that has so far not been very attractive for human development - the Himalayas, the Tibetan highlands, and the Arctic regions of Russia.
26 Jan 2006 - by Torstein Olsen and Einar Lieng, Statens Kartverk (for UNEP/GRID-Arendal)
5
Human impact - Africa Human impact - Africa
Africa is home to some of the greatest wilderness areas in the world, as well as some of the greatest biodiversity hotspots. The GLOBIO analysis shows that the great deserts and the Central African rain forests have huge remaining tracts that show low human impact and development.
26 Jan 2006 - by Torstein Olsen and Einar Lieng, Statens Kartverk (for UNEP/GRID-Arendal)
3
Human Impact on biodiversity - Latin America Human Impact on biodiversity - Latin America
Latin America has vast tracts of sparsely populated areas of high biodiversity, in the Amazon and the Andes for instance. The GLOBIO analysis shows that these areas have seen little human impact, while the coasts and the plains have disturbed and fragmented habitats, particularily for large mammals.
26 Jan 2006 - by Torstein Olsen and Einar Lieng, Statens Kartverk (for UNEP/GRID-Arendal)
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Human Impact - Europe and the Near East Human Impact - Europe and the Near East
The assessment and modelling of current impact on wilderness show that there are few areas in Europe proper that have seen little human impact - it is all broken up by roads thus lowering the value of habitats primarily for big mammals. Areas with wilderness qualities can be found in the Arctic and further East in this analysis.
26 Jan 2006 - by Torstein Olsen and Einar Lieng, Statens Kartverk (for UNEP/GRID-Arendal)
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Loss of Great Ape habitat 2002-2032 (Africa) Loss of Great Ape habitat 2002-2032 (Africa)
Based on population pressures the GLOBIO2 model has assessed the current and future human impacts on Great Ape habitat in Africa (Chimpanzee, Bonobo and Gorilla). The analysis shows a vast reduction of some of the world's remaining wilderness areas. (this poster prepared for the UNESCO GRASP meeting in November 2003)
26 Jan 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Protected areas and wilderness Protected areas and wilderness
Wilderness areas in the Arctic, representing vast expanses of tundra and taiga that sees very little human disturbance and stress have been determined by an analysis prepared by the UN Environment Programme World Conservation Monitoring Centre in 2001. Overlaid with protected areas, this graphic highlights the areas that are currently not under International protection, and thus should be made a priority for conservation.
06 Dec 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Barents Sea vulnerability index Barents Sea vulnerability index
Areas that are vulnerable to pollution from oil and chemical spills where identified using a multiple index in a geographical analysis. Factors, including shoreline sensitivity, corals, benthic conditions, sea birds, marine mammals, fish and fisheries and other sea resources where taken into account and weighed for their importance.
06 Dec 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Change in the age of ice on the Arctic Ocean, comparing September ice ages in 1988, 1990, 2001 and 2005 Change in the age of ice on the Arctic Ocean, comparing September ice ages in 1988, 1990, 2001 and 2005
The age of sea ice in the Arctic is changing, and not only the extent and concentrations. Studies show that in recent years there is a higher proportion of younger ice to older ice than was observed in the late 1980s. This analysis is based on results from a simulation using drifting buoy data and satellite-derived ice-concentration data. The darker the colour, the older the ice.
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Trends in spring snow cover duration for the Northern Hemisphere, 1970-2004 Trends in spring snow cover duration for the Northern Hemisphere, 1970-2004
Examination of regional trends in spring snow-cover duration from 1969–2003 using NOAA snow-cover data shows the western United States to be among the regions with the strongest decreases. This supports results from studies based on measurements on the ground. Springtime snow cover shows a decline particularly in the Pacific Northwest region of the western United States, where snow water equivalent, a common snow cover measurement equivalent to t...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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Ratio of existing ski areas in the Alps with natural snow-reliability under current conditions and warmer conditions Ratio of existing ski areas in the Alps with natural snow-reliability under current conditions and warmer conditions
Winter tourism is a significant part of the economy of Alpine countries and the most important source of income in many regions. In Austria, winter tourism revenue makes up 4.5 per cent of GNP and half of the total income from tourism. Much of winter tourism is based around the ski industry, which is dependent on reliable snow conditions. Although snow fall is expected to increase at high elevations, it is winter temperatures that largely determi...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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