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Tag: Atmosphere

Effects on Public Health - Air Pollution, a Preventable Risk
SLCPs, particularly O3 and BC and co-pollutants, which are important parts of PM2.5 air pollution, are harmful to human health. Globally, PM2.5 is a major global cause of premature mortality. Indoor and outdoor PM2.5 air...
19 Jun 2014 - by GRID-Arendal
Global Ocean Acidification
As carbon concentrations in the atmosphere increase, so do concentrations in the ocean, with resultant acidification as a natural chemical process.
06 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Uptake of Carbon Dioxide from the Atmosphere
Arctic marine systems currently provide a substantial carbon sink but the continuation of this service depends critically on arctic climate change impacts on ice, freshwater inputs, and ocean acidification.
27 Oct 2009 - by Riccardo Pravettoni, UNEP/GRID-Arendal
Transport SO2 emissions
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic shows transport SO2 emissions from 1990 to 1998 ...
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Transport CO2 emissions
Graphics from the year 2000 Baltic 21 biannual indicator-based status report on sustainable development in the Baltic Sea Region (Baltic 21 Series No 1/2000). This graphic shows transport CO2 emissions from 1990 to 1998 ...
10 Mar 2006 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Global atmospheric concentration of CO2 (outtake)
Chart showing the increase in CO2 levels in the atmosphere from 1870 to 2004 and predicted levels to the year 2100. Historically the developed countries of the world have emitted most of the anthropogenic greenhouse gas...
17 May 2005 - by UNEP/GRID-Arendal
Mitigating climate change: cost in 2050 (out of GDP)
Global average GDP might be reduced by 1–4% if we reduce the emissions of CO2 so that we stabilize the concentration in the atmosphere at 450 ppmv. In 2003 the concentration was 375 ppmv. If we stabilise at higher concen...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Factors influencing the greenhouse effect
There are three main factors that directly influence the energy balance of the earth: the total energy influx, which depends on the earth's distance from the sun and on solar activity; the chemical composition of the atm...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Change in precipitation for scenarios A2 and B2; Tropical America
When global surface temperatures increase, changes in precipitation and atmospheric moisture are very likely to increase: the hydrological cycle will be more active, and the atmosphere will increase its water holding cap...
17 May 2005 - by UNEP/GRID-Arendal
Tropical hydropower dams as greenhouse sources
Large tropical hydropower reservoirs in Latin America may have a potential adverse impact on the climatic system through releasing greenhouse gases into the atmosphere. Submerging large areas of land and tropical vegetat...
17 May 2005 - by Viktor Novikov, UNEP/GRID-Arendal
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 atmosphe...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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 radiati...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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 'stabilizat...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
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
Historical Forest Carbon Balance 1855-1995
Through processes of respiration and through the decay of organic matter or burning of biomass, forests release carbon. A carbon ‘sink’ is formed in the forest when the uptake of carbon is higher than the release. The co...
01 Oct 2009 - by Philippe Rekacewicz assisted by Cecile Marin, Agnes Stienne, Guilio Frigieri, Riccardo Pravettoni, Laura Margueritte and Marion Lecoquierre.
Emissions due to solid waste disposal on land
Landfi ling is the most common waste management practice, and results in the release of methane from the anaerobic decomposition of organic materials. Methane is around 20 times more potent as a GHG than carbon dioxide. ...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Global atmospheric concentration of CO2 1870-1990
Historically the developed countries of the world have emitted most of the anthropogenic greenhouse gases. The U.S. emits most in total, and is one of the countries with highest emissions per capita. China is the second ...
28 Sep 2005 - by UNEP/GRID-Arendal
Acidification due to climate change - impacts for oceans and coral reefs
As carbon concentrations in the atmosphere increase from land use changes and emissions from fossil fuels - so do concentrations in the ocean, with resultant acidification as a natural chemical process. The skeletons of ...
01 Feb 2008 - by Hugo Ahlenius, UNEP/GRID-Arendal
Emissions of N2O in Norway, 85-96
The graph shows emissions of N2O in Norway from 1985 to 1996. Nitrous oxide (N2O) is emitted to the atmosphere by both natural such as combustion and anthropogenic sources such as industrial processes and fertilizers.
12 Feb 2006 - by UNEP/GRID-Arendal
Emissions of N20 in Norway, 85-96
The graph shows emissions of N20 in Norway from 1985 to 1996 with projections to 2010. N20 can occour naturally or have anthropogenic sources such as fertilizrs, combustion and various industrial processes.
12 Feb 2006 - by UNEP/GRID-Arendal
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