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Aviation and the Global Atmosphere

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<strong>Aviation</strong> <strong>and</strong> <strong>the</strong> <strong>Global</strong> <strong>Atmosphere</strong><br />

<strong>Aviation</strong> <strong>and</strong> <strong>the</strong> <strong>Global</strong> <strong>Atmosphere</strong><br />

{Title}<br />

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O<strong>the</strong>r reports in this collection<br />

Figure 3-14: Correlation of mean annual contrail frequency <strong>and</strong> estimated May 1990 aircraft fuel usage above 7km<br />

altitude. Contrail frequencies are based on 1993 to 1994 hourly surface observations from 19 stations in <strong>the</strong><br />

United States of America (Minnis et al., 1997). The fit to <strong>the</strong> data (solid line) is shown. R is <strong>the</strong> correlation<br />

coefficient.<br />

http://www.ipcc.ch/ipccreports/sres/aviation/avf3-14.htm (1 von 2)08.05.2008 02:45:26

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