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Tag: Temperature

Temperature and CO2 concentration in the atmosphere over the past 400 000 years
Over the last 400,000 years the Earth's climate has been unstable, with very significant temperature changes, going from a warm climate to an ice age in as rapidly as a few decades. These rapid changes suggest that clima...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Impact of Temperature Rise on Robusta Coffee in Uganda
Developing countries, whose economies often rely heavily on one or two agricultural products, are especially vulnerable to climate change. This graphic shows that with an increase of only 2 degrees Celsius, there would b...
17 May 2005 - by Otto Simonett, UNEP/GRID-Arendal
Mean sea surface temperature on the Caspian Sea
Recent research by the Caspian Environment Programme estimates the number of living seals to be as low as 150,000. A further reduction in ice cover due to a warming climate could well be one of the major threats facing t...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Comb-jelly (Mnemiopsis leidyi) spreading through the Caspian Sea (invasive species)
The comb jelly (Mnemiopsis leidyi) is well adapted to the habitat (salinity, temperature, and food range) and reproduces faster than endemic species. As it eats the same food as them, it has had a drastic effect on their...
04 Oct 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Caspian sea climate, mean annual temperature and precipitation
With the Caspian Sea's north-south alignment, stretching over a distance of approximately 10 degrees, the water body crosses several different climatic regions. The northernmost regions, with Russia and Kazakhstan are ch...
07 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Selected impacts of climate change in the Caspian Sea region
As the concentration of greenhouse gases in the atmosphere increases, the temperature in the European part of the Caspian Sea region will continue to rise, at least at first. Some researchers have recently expressed fear...
01 Oct 2007 - by Philippe Rekacewicz, 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
Temperature trends (1976 - 2000)
Over the 20th century there has been a consistent, large-scale warming of both the land and ocean surface, with largest increases in temperature over the midand high latitudes of northern continents. This graphic shows t...
17 May 2005 - by UNEP/GRID-Arendal
Temperature and CO2 concentration in the atmosphere over the past 400 000 years
Over the last 400,000 years the Earth's climate has been unstable, with very significant temperature changes, going from a warm climate to an ice age in as rapidly as a few decades. These rapid changes suggest that clima...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Global average temperature 1880 - 2100
The graph shows the average global temperature from 1880 to 2100. It shows that the average global temperature has slowly increased since 1880 and is estimated to increase noticably over the course of the next hundred ye...
12 Feb 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Impact of Temperature Rise on Robusta Coffee in Uganda
Developing countries, whose economies often rely heavily on one or two agricultural products, are especially vulnerable to climate change. This graphic shows that with an increase of only 2 degrees Celsius, there would b...
12 Feb 2006 - by Otto Simonett, UNEP/GRID-Arendal
Trends in regional average surface temperature in the Ferghana Valley area
An important factor when looking at the region in terms of environment and security is the impact of climate change in Central Asia in general, and Ferghana Valley in particular. By modifying people’s livelihood, climate...
16 Mar 2006 - by Viktor Novikov, UNEP/GRID-Arendal
Re-infestation by 'Aedes aegypti'
Climate change affect the health of the population, not only through heat waves and waterborne diseases, but also as a result of the expansion of geographical areas conducive to the transmission of vector-borne diseases ...
16 Sep 2006 - by Nieves López Izquierdo, Assosciate Consultant UNEP/GRID-Arendal
Temperature increase in the Arctic, 2090 scenario
The averages of the scenarios in the Arctic Climate Impact Assessment (ACIA) are presented in this figure, for the year 2090. The Arctic is a place where the effects of climate change are already very visible, and scenar...
06 Dec 2006 - by Hugo Ahlenius, UNEP/GRID-Arendal
Projected temperatures in the 21th century
Projected Arctic annual land temperature increases for the first half of the 21st century relative to the average temperature for 1980–99. The average of the IPCC models (the blue line) shows an increase of 3ºC by 2050. ...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Temperatures over previous centuries from various proxy records
Evidence from tree rings and other temperature proxies suggests that during the previous 500 years global temperatures were 1.0ºC cooler than those of the 20th century during a period roughly from 1300 to 1870 – known as...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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 stud...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Trends in Arctic temperature, 1880-2006
A history of Arctic land temperature anomalies from 1880 through 2006 is shown in this figure. The zero line represents the average temperature for 1961–1990. In the late 1800s the Arctic was relatively cold, although t...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Schematic diagram of glacier, permafrost and forest limits as a function of mean annual air temperature and average annual precipitation
Glaciers and ice caps form around the world where snow deposited during the cold/humid season does not entirely melt during warm/dry times. This seasonal snow gradually becomes denser and transforms into perennial firn (...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Overview on glacier changes since the end of the Little Ice Age
Glaciers and ice caps reached their Holocene (the past 10 000 years) maximum extent in most mountain ranges throughout the world towards the end of the Little Ice Age, between the 17th and mid-19th century. Over the past...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
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