Greenhouse gases (GHG) are gaseous components of the lower
atmosphere that act like a pane of glass in a greenhouse and thereby contribute
to the greenhouse effect. Some greenhouse gases occur naturally in the atmosphere,
while others result from human activities. The major natural greenhouse gases
are water vapor, which causes about 36-70% of the greenhouse effect on Earth
(not including clouds); carbon dioxide, which causes between 9-26%; and ozone,
which causes between 3-7%. Minor greenhouse gases include, but are not limited
to: methane, nitrous oxide, sulfur hexafluoride, and chlorofluorocarbons (CFCs).
Very powerful greenhouse gases that are not naturally occurring include hydrofluorocarbons
(HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6), which are generated
in a variety of industrial processes.


See olelog of Sunday, 13. November 2005, 08:12:39: Water vapour as greenhouse gas
Carbon dioxide is released to the atmosphere when solid waste, fossil fuels (oil, natural gas, and coal), and wood and wood products are burned.
See olelog of
Friday, 25. November 2005, 15:46:34: Carbon Dioxide and Methane
Tuesday, 8. November 2005, 08:50:50: Carbon Dioxide Storage - 2
Tuesday, 11. October 2005, 18:02:22: Carbon Cycle – the North Sea
Wednesday, 28. September 2005, 07:55:28: Carbon Dioxide Storage
Tuesday, 27. September 2005, 09:59:46: Global Warming, Forests and Carbon Cycle
Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from the decomposition of organic wastes in municipal solid waste landfills, and the raising of livestock.
Friday, 25. November 2005, 15:46:34: Carbon Dioxide and Methane
See olelog of Saturday, 12. November 2005, 16:33:28: Methane emissions and oceans
Nitrous oxides is emitted during agricultural and industrial activities, as well as during combustion of solid waste and fossil fuels.
Last modified on
olehnielsen.dk
If you have any problems with this page or wish
to comment on the site, please e-mail the webmaster