Greenhouse gas
hideGreenhouse gases are gases in an atmosphere that absorb and emit radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. Common greenhouse gases in the Earth's atmosphere include water vapor, carbon dioxide, methane, nitrous oxide, and ozone. In our solar system, the atmospheres of Venus, Mars and Titan also contain gases that cause greenhouse effects. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would be on average about 33°C (59°F) colder than at present.
Human activities since the start of the industrial era around 1750 have increased the levels of greenhouse gases in the atmosphere. The 2007 assessment report compiled by the IPCC observed that "changes in atmospheric concentrations of greenhouse gases and aerosols, land cover and solar radiation alter the energy balance of the climate system", and concluded that "increases in anthropogenic greenhouse gas concentrations is very likely to have caused most of the increases in global average temperatures since the mid-20th century".
For more information about Greenhouse gas, read the full article at
Wikipedia.
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News tagged with carbon emissions
New forest fire detection system prototype installed at Lake Tahoe
Dec 07, 2009 |
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Graham Kent, Nevada Seismological Laboratory director at the University of Nevada, Reno is leading the installation, testing and maintenance of a novel way to monitor forests fires and other environmental ...
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UN: 2000-2009 could be Earth's warmest decade ever
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(AP) -- A leaked Danish document at the U.N. climate conference provoked angry criticism Tuesday from developing countries who feared it would shift more of the burden to curb greenhouse gases on poorer countries.
EPA says greenhouse gases endanger human health
Dec 07, 2009 |
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(AP) -- The Environmental Protection Agency took a major step Monday toward regulating greenhouses gases, concluding that climate changing pollution threatens the public health and the environment.
The last best chance: UN climate conference opens
Dec 07, 2009 |
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(AP) -- The largest and most important U.N. climate change conference in history opened Monday, with organizers warning diplomats from 192 nations that this could be the last best chance for a deal to protect ...
Silicon Valley getting greener with Hara
Dec 07, 2009 |
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Fresh from signing on to help green Silicon Valley, startup Hara will be at climate talks in Copenhagen this week to urge that corporations not wait for regulations to fight global warming.
German researchers demonstrate diesel truck engine with barely measurable emissions
Dec 07, 2009 |
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Just three months after the Euro 5 Norm for exhaust emissions went into force for all new car models, researchers at the Technische Universitaet Muenchen (TUM, Germany) have demonstrated an engine that is ...
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