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Aviation induced diurnal North Atlantic cirrus cover cycle

Graf, Kaspar and Schumann, Ulrich and Mannstein, Herrmann and Mayer, Bernhard (2012) Aviation induced diurnal North Atlantic cirrus cover cycle. Geophysical Research Letters, 39 (L16804), pp. 1-5. DOI: 10.1029/2012GL052590.

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Official URL: http://www.agu.org/journals/gl/gl1216/2012GL052590/2012GL052590.pdf


Aviation induced cirrus (AIC) cover is identified from mean diurnal cycles of cirrus cover and air traffic density in the North Atlantic flight corridor. Traffic data for this region show an aviation �fingerprint� with two maxima during morning eastbound and afternoon westbound traffic. The same aviation fingerprint is found in cirrus cover. Cycle differences between west and east domain parts allow separating between aviation and natural diurnal changes. Cirrus cover is derived from 8 years of Meteosat infrared data. Linear contrail cover is estimated from the same data. Background cirrus without aviation impact is estimated from cirrus observations over the South Atlantic and from numerical weather prediction forecast. The cirrus cover cycle is well approximated by linear response to traffic density with fitted delay times of 2.3�4.1 h, implying AIC cover of 1�2%, more than expected from recent models.

Document Type:Article
Title:Aviation induced diurnal North Atlantic cirrus cover cycle
AuthorsInstitution or Email of Authors
Schumann, UlrichUNSPECIFIED
Mannstein, HerrmannUNSPECIFIED
Mayer, BernhardUNSPECIFIED
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
In Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1-5
Keywords:Meteosat, aviation, cirrus, climate, contrail, tide
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Remote Sensing
Deposited By: Jana Freund
Deposited On:18 Sep 2012 11:52
Last Modified:12 Dec 2013 21:46

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