Global warming-2006

Global warming-2006 - lobal warming: Is it real? lobal...

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Unformatted text preview: lobal warming: Is it real? lobal warming: Is it real? lobal warming: Is it real? lobal warming: Is it real? Global warming: Is it real? Global warming: Is it real? oes it matter for a oes it matter for a Global warming: Is it real? Global warming: Is it real? oes it matter for a oes it matter for a Does it matter for a Does it matter for a chemical engineer? chemical engineer? Does it matter for a Does it matter for a chemical engineer? chemical engineer? Dr David Karoly School of Meteorology Email: dkaroly@ou.edu Recent global warming quotes z Senator James Inhofe (R, Oklahoma), Chair, Senate Env. and Public Works Comm., in a speech to the US Senate on Jan 4, 2005 I called the threat of catastrophic global warming the greatest hoax ever perpetrated on the American people z British Prime Minister Tony Blair in a speech on 14 Sept 2004 I want to concentrate on what I believe to be the world's greatest environmental challenge: limate change climate change Global warming references z IPCC web site http://www.ipcc.ch/ z US EPA global warming site http://www.epa.gov/globalwarming/ z US National Assessment of climate change http://www.usgcrp.gov/usgcrp/nacc/default.htm z Skeptical view on global warming http://www.globalwarming.org/ z A site maintained by some climate scientists http://www.realclimate.org/ troduction Introduction z What is the greenhouse effect? z Natural climate variations z The latest assessment of global warming and its causes z International policy and agreements z Options for reducing and stabilizing greenhouse concentrations The greenhouse effect Most gaseous molecules in the atmosphere with more than two atoms are very strong absorbers of frared radiation and are called greenhouse gases infrared radiation and are called greenhouse gases. If there were no greenhouse gases in the atmosphere, the average surface temperature of the Earth would be about 30C colder than at present. he greenhouse effect makes the Earth habitable The greenhouse effect makes the Earth habitable. Water vapor is the most important greenhouse gas in e atmosphere but its concentration is not changing the atmosphere but its concentration is not changing directly due to human activity. Carbon dioxide and ethane concentrations are increasing, methane concentrations are increasing, causing an enhanced greenhouse effect. Natural climate variability Climate can vary over a wide range of timescales due to internal processes; coupling between the atmosphere and its weather variability with oceans, land surface, and snow and ice. The ocean response me is very long because of the large heat capacity time is very long because of the large heat capacity of the ocean and the very slow currents. This is called ternal climate variability. internal climate variability....
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Global warming-2006 - lobal warming: Is it real? lobal...

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