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Tag: Greenhouse gas

Emissions of SF6 in Norway, 85-96
The graph shows emissions of SF6 in Norway from 1985 to 1996.SF6 is a highly potent greenhouse gas used in the industry for insulation in high voltage equipment and current interruption in electric transmission and distr...
12 Feb 2006 - by UNEP/GRID-Arendal
Potential climate change impacts
If greenhouse gas concentrations keep rising, climatic changes are likely to result. Those changes will potentially have wide-ranging effects on the environment and socio-economic and related sectors, such as health, agr...
23 Feb 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
IPCC and UNFCCC - Institutional framework
In 1988, UNEP and WMO jointly established the Intergovernmental Panel on Climate Change (IPCC) as concern over changes in the climate became a political issue. The purpose of the IPCC was to assess the state of knowledge...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Greenhouse effect
Human activities are causing greenhouse gas levels in the atmosphere to increase. This graphic explains how solar energy is absorbed by the earth's surface, causing the earth to warm and to emit infrared radiation. The g...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
IPCC structure
In 1988, UNEP and WMO jointly established the Intergovernmental Panel on Climate Change (IPCC) as concern over changes in the climate became a political issue. The purpose of the IPCC was to assess the state of knowledge...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Kyoto protocol, 2002 target status
Target reached in 2002, but the emissions are increasing again. By the end of 2005, countries that are obliged to reduce their greenhouse gas emissions shall report on their progress towards reaching the emission targets...
17 May 2005 - by Robert Barnes, 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
Kyoto protocol, timeline and history
The Kyoto Protocol In 1997 world leaders adopted the Kyoto Protocol requiring rich countries to reduce their greenhouse gas emissions to 5.2% below the 1990 level, calculated as an average over the period 2008-2012. Unde...
17 May 2005 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Greenhouse effect
Human activities are causing greenhouse gas levels in the atmosphere to increase. This graphic explains how solar energy is absorbed by the earth's surface, causing the earth to warm and to emit infrared radiation. The g...
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
Main greenhouse gases
A table of the main greenhouse gases and their attributes, sources and concentration levels from 1998. Naturally occurring greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide, and ozone. Greenh...
17 May 2005 - by UNEP/GRID-Arendal
National carbon dioxide (CO2) emissions per capita
Shows various countries and their levels of CO2 emissions per capita. Also indicates the difference from high income to low income nations on CO2 output. Central to any study of climate change is the development of an e...
17 May 2005 - by UNEP/GRID-Arendal
Kyoto protocol, 2002 target status
After more than 10 years of negotiations, the Kyoto Protocol finally becomes legally binding for the countries that have ratified it. The overall goal in the Protocol is a 5,2 % reduction of greenhouse gas emissions belo...
17 May 2005 - by Robert Barnes, UNEP/GRID-Arendal
Sea ice concentration change over the 21st century as projected by climate models
The data are taken from climate model experiments of 12 (out of 24) different models that were conducted for the IPCC Assessment Report 4 using the SRES A1B greenhouse gas emission scenario. Plots on the right show chang...
01 Jun 2007 - by Hugo Ahlenius, UNEP/GRID-Arendal
Energy efficiency generally improves with economic growth...but greenhouse gases increase too
In 1992 76 million people living in urban areas were exposed to air pollutant concentrations exceeding WHO guidelines. In developing countries 1.9 million people die each year because of indoor air pollution exposure and...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Human influences on the atmosphere during the industrial era
In many of the world’s largest cities (Beijing, Calcutta, Mexico City, Rio de Janeiro, etc.) WHO World Health Organization) air quality guidelines are not met. In 1996 global emissions of carbon dioxide were nearly four ...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Smog over Southeast Asia in 1997
In 1997 alone haze caused by air pollutants from fire spread for more than 3,200 kilometers, covering six Southeast Asian countries. In the Malaysian state of Sarawak, air pollution reached one the highest recorded indic...
29 Nov 2007 - by Philippe Rekacewicz, UNEP/GRID-Arendal
Contribution of ecosystems to historical radiative forcing and current greenhouse gas emissions
Radiative forcing caused by changes in atmospheric composition, alteration in land surface reflectance (albedo), and variation in the output of the sun for the year 2000 relative to conditions in 1750.
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Characteristic time and space scales related to ecosystems and their services
The time scale of change refers to the time required for the effects of a perturbation of a process to be expressed. Inertia refers to the delay or slowness in the response of a system to factors altering their rate of c...
30 Nov 2007 - by Philippe Rekacewicz, Emmanuelle Bournay, UNEP/GRID-Arendal
Greenhouse gas (GHG) emissions by source, 2004
Overall, agriculture (cropping and livestock) contributes 13.5 % of global greenhouse gas emissions mostly through emissions of methane and nitrous oxide (about 47% and 58% of total anthropogenic emissions of CH4 and N2O...
03 Jan 2008 - by IAASTD/Ketill Berger, UNEP/GRID-Arendal
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