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Global atmospheric concentration of CO2 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 taken in Antarctica and from 1958 onwards are from the Mauna Loa measurement site. The smooth curve is based on a hundred year running mean. It is evident that the rapid increase in CO2 concentrations has been occurring since the...
17 May 2005 - by UNEP/GRID-Arendal
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Freshwater stress 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 the UN mid-range population projection. It uses the current rate of water use per person without taking into account possible increases in water use due to economic growth or improvements in water use efficiency. The regions most v...
07 Nov 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Planets and atmospheres Planets and atmospheres
A planet's climate is decided by its mass, its distance from the sun and the composition of its atmosphere. Mars is too small to keep a thick atmosphere. Its atmosphere consists mainly of carbon dioxide, but the atmosphere is very thin. The atmosphere of the Earth is a hundred times thicker.
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Potential dengue transmission in case of temperature rise 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 vector, and exposed human populations are required for disease transmission.
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Sources of greenhouse gases Sources of greenhouse gases
Shows the sources for greenhouse gases, contributing to climate change, and their relative radiative forcing effect (radiative forcing is the change in the balance between radiation coming into the atmosphere and radiation going out)
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Emissions of CO2 - selected countries (1995) Emissions of CO2 - selected countries (1995)
The rich countries of the world historically have emitted most of the anthropogenic greenhouse gases since the start of the industrial revolution in the latter half of the 1700s. Per capita, the significant emissions still are produced by the OECD countries.
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Great weather and flood catastrophes over the last forty years Great weather and flood catastrophes over the last forty years
Some reports suggest that increase in climate variability or extremes has taken place in recent decades. However, there are inadequate data to determine whether such global changes have occurred consistently over the 20th century. On regional scales there is clear evidence of changes in some extremes and climate variability indicators - for example, fewer frosts in several widespread areas; and an increase in the proportion of rainfall from extr...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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UN Convention on Climate Change (UNFCCC) UN Convention on Climate Change (UNFCCC)
The United Nations Framework Convention on Climate Convention is the foundation of global efforts to combat global warming. Opened for signature in 1992 at the Rio Earth Summit, its ultimate objective is the 'stabilization of greenhouse gas concentrations in the atmosphere at a level that would prevent dangerous anthropogenic human-induced interference with the climate system. The Convention's supreme body is the Conference of the Parties (COP)...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Precipitation changes: trend over land from 1900 to 1994 Precipitation changes: trend over land from 1900 to 1994
Precipitation has increased over land at high latitudes of the Northern Hemisphere, especially during the cold season. Decrease in precipitation occurred in steps after the 1960s over the subtropics and the tropics from Africa to Indonesia.
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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CO2 emissions from land use change CO2 emissions from land use change
Emissions of carbon dioxide due to changes in land use mainly come from the cutting down of forests and instead using the land for agriculture or built-up areas, urbanisation, roads etc. When large areas of rain forests are cut down, the land often turns into less productive grasslands with considerably less capacity of storing CO2.
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Six IPCC scenarios Six IPCC scenarios
The projection of future climate change depends partly on the assumptions made about future emissions of greenhouse gases and aerosol precursors and the proportion of emissions remaining in the atmosphere.
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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Global Wood Consumption Global Wood Consumption
No data
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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The Kola Peninsula under Threat from Deadly Emissions The Kola Peninsula under Threat from Deadly Emissions
Nodata
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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Which Countries Account for the Largest Area of Protective Forest Plantations Which Countries Account for the Largest Area of Protective Forest Plantations
No data
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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Trends in Occurence of Wild Fires Trends in Occurence of Wild Fires
No data
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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Socio Economic Indicators for the Legal Amazon Region Socio Economic Indicators for the Legal Amazon Region
No data
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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Deforestation Benefits Deforestation Benefits
No data
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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Colonization of West Papua Indonesia Colonization of West Papua Indonesia
No data
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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Estimated Loss of Rainfall in Amazonia in the Next Century Estimated Loss of Rainfall in Amazonia in the Next Century
The synthesis of 23 climate models shows a decline in rainfall between 1980-1999 and 2080-2099 under mid- range (A1B) global greenhouse gas emissions scenarios. The dry season rainfall is particularly important (winter in north and summer in central and southern Amazonia).
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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Trends in Commodity Prices Trends in Commodity Prices
No data
20 Jun 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
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