Global Warming - Research Article from Macmillan Science Library: Plant Sciences

This encyclopedia article consists of approximately 4 pages of information about Global Warming.
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Scientific Debate: Existence, Extent, Causes, and Pace

Nearly all of the scientific community agrees that based on surface temperature observations, the global climate warmed by about 0.5° C in the twentieth century. Satellite observations of global temperatures show warming trends between 1970 and 1990 similar to those found in surface observations. Decreases in sea ice cover and global glacier retreat provide corroborating evidence of global warming. A few scientists believe that the warming at weather stations is due to the development of cities around weather stations, but analysis in the late 1990s has shown that warming is similar at urban and rural areas. Different areas of the world and different seasons have warmed more than others. Due to global atmospheric circulation patterns that transport heat from the tropics to the poles, warming has been greatest in high latitudes. In some areas of Alaska and Asia, average temperatures have warmed by...

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This section contains 1,161 words
(approx. 4 pages at 300 words per page)
Buy the Global Warming Encyclopedia Article
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Macmillan Science Library: Plant Sciences
Global Warming from Macmillan Science Library: Plant Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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