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Is There a Trend in Cirrus Cloud Cover Due to Aircraft Traffic? : Volume 4, Issue 5 (13/10/2004)

By Stordal, F.

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Book Id: WPLBN0003973450
Format Type: PDF Article :
File Size: Pages 29
Reproduction Date: 2015

Title: Is There a Trend in Cirrus Cloud Cover Due to Aircraft Traffic? : Volume 4, Issue 5 (13/10/2004)  
Author: Stordal, F.
Volume: Vol. 4, Issue 5
Language: English
Subject: Science, Atmospheric, Chemistry
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2004
Publisher: Copernicus Gmbh, Göttingen, Germany

Citation

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Arlander, W., Myhre, G., Rossow, W. B., Svendby, T., Lee, D. S., G. Storda, E. J., & Stordal, F. (2004). Is There a Trend in Cirrus Cloud Cover Due to Aircraft Traffic? : Volume 4, Issue 5 (13/10/2004). Retrieved from http://worldlibrary.in/


Description
Description: Norwegian Institute for Air Research, Kjeller, Norway. Trends in cirrus cloud cover have been estimated based on 16 years of data from ISCCP (International Satellite Cloud Climatology Project). The results have been spatially correlated with aircraft density data to determine the changes in cirrus could cover due to aircraft traffic. Main emphasis has been on the area covered by the METEOSAT satellite, to avoid trends in the ISCCP data resulting from changing satellite positions. An alternative retrieval of high clouds in this region has been used to complement the analysis based on ISCCP data. In Europe, which is within the METEOSAT region, we find indications of a trend of about 2%/decade due to aircraft, in reasonable agreement with previous studies. The positive trend in cirrus in areas of high aircraft traffic seems to have contrasted a general negative trend in cirrus. Extrapolation in time to cover the entire period of aircraft operations and in space to cover the global scale yields a best estimate of 0.05 Wm−2 for the radiative forcing due to aircraft. This is close to the value given by IPCC (1999) as an upper limit.

Summary
Is there a trend in cirrus cloud cover due to aircraft traffic?

 

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