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Tag: Temperature

Rapid decline of the San Quintin glacier, North Patagonia
Glaciers grow and retreat at intervals depending on local climate changes, particularly variations in temperature and precipitation . Retreating and diminishing mountain glaciers all over the world, except in the Antarc...
17 May 2005 - by UNEP/GRID-Arendal
Rapid retreat of glaciers in the Cordillera Blanca, Peru
There is now ample evidence of a major retreat of most mountain glaciers during the last 100 years in response to widespread increases in temperature. In recent decades, the rate of glacial recession has increased tremen...
17 May 2005 - by UNEP/GRID-Arendal
Intense hurricanes in the Atlantic Basin
Global average temperature increased by 0.6 ° C over the last century, while sea levels rose by 9 to 20 cm. The IPCC projects increases in the global average surface temperature by between 1.4°C and 5.8°C and in sea leve...
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
Freshwater stress
Today, the great pressure on water resources is rising human populations, particularly growing concentrations in urban areas. This diagram shows the impact of expected population growth on water usage by 2025, based on t...
07 Nov 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Potential dengue transmission in case of temperature rise
A warmer climate increases occasions of vector borne tropical diseases. This figure depicts weeks of potential dengue transmission under current temperature and 2°C and 4 °C warming. Presence of dengue virus, mosquito ve...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Area of Biomes Protected
Rising temperatures force many living organisms to migrate to cooler areas, while new organisms arrive. Such movements involve all species, including plants. Some species will seek higher altitudes, others will mov...
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
The main Biomes of the World
Defining what constitutes a forest is not easy. Forest types differ widely, determined by factors including latitude, temperature, rainfall patterns, soil composition and human activity.
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
Projected temperature changes, 2000 to 2100 scenario
Average temperatures changes in the world according to the GFDL model (doubling of CO2 and temperature increase by 3,7°C from 2000 to 2100). According to this model, the changes will be most severe in the Arctic and the ...
28 Sep 2005 - by UNEP/GRID-Arendal
Coastal regions with observations of dense shelf water flushing
Knowledge and mapping of these processes is still scarce due to uneven research effort. The map shows sites with known dense shelf water cascading phenomena, which often may involve the 'flushing' effect. It is most like...
01 Feb 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Climate change and tropical coral reefs, scenarios for bleaching events
Projected areas of above normal sea temperature where coral bleaching is likely to occur for the SRES A2 scenario (continuing current trends) by two different models, the PCM (1.7°C increase in 100 years) and the HadCM3 ...
01 Feb 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Tropical sea temperature rises and coral reefs - climate change scenarios
The impacts of coral reefs from rising sea temperatures. When coral reefs become heat-exposed they die, leaving the white dead coral, also known as bleaching. With even moderate pollution, the coral are easily overgrown ...
01 Feb 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Climate change scenarios for desert areas by 2050
In desert areas by 2050, the majority of the temperature increase, according to the NCAR-CCSM3 model (and the IPCC SRES A2 scenario), will occur in the Northern Sahara, western Australia and in the inland deserts of Nort...
06 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Climate change scenarios for desert areas
SRES scenarios show the period 2071 to 2100 relative to the period 1961 to 1990, and were performed by AOGCMs. Scenarios A2 and B2 are shown as no AOGCM runs were available for the other SRES scenarios.
06 Mar 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
The Arctic region - definitions
Several definitions of the Arctic, physical temperature boundaries, political boundaries, such as as the CAFF delineation, and the Arctic Circle. Compiled by GRID-Arendal and presented in the CAFF Habitat Conservation Re...
01 Nov 2006 - by UNEP/GRID-Arendal
Malaria risk and climate change
Plasmodium vivax, with the Anopheles mosquito as a vector, is an organism causing malaria. The main climate factors that have bearing on the malarial transmission potential of the mosquito population are temperature and ...
17 May 2005 - by UNEP/GRID-Arendal
Change in permafrost temperature in Fairbanks (Alaska)
With a doubling of atmospheric CO2, it is likely that there will be increases in the thickness of the active layer permafrost and the disappearance of most of the ice-rich discontinous permafrost over a century-long time...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Trends in global temperatures
The figure shows the combined land-surface air and sea surface temperatures (degrees Centigrade) 1861 to 1998, relative to the average temperature between 1961 and 1990. The mean global surface temperature has increased...
06 Nov 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Temperature trends and projections
Using the IS92 emission scenarios, projected global mean temperature changes relative to 1990 were calculated up to 2100. Climate models calculate that the global mean surface temperature could rise by about 1 to 4.5 cen...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Sea level rise due, past and scenarios due to global warming
Over the last 100 years, the global sea level has risen by about 10 to 25 cm. Sea level change is difficult to measure. Relative sea level changes have been derived mainly from tide-gauge data. In the conventional tide-g...
01 Oct 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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