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The importance of contrail ice formation for mitigating the climate impact of aviation

Kärcher, Bernd (2016) The importance of contrail ice formation for mitigating the climate impact of aviation. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 121. Wiley. DOI: 10.1002/2015JD024696 ISSN 2169-897X

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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/2015JD024696/full

Abstract

Aircraft contrails and the cirrus clouds arising from them contribute substantially to aviation-induced climate forcing. The share of aviation in anthropogenic climate change can be reduced by avoiding contrail cirrus formation. The mitigation potential of altering the contrail formation stage is explored using a microphysical model to show how reductions in soot particle number emissions from jet engines, reductions in mean soot particle size, and a decrease in the supersaturation of aircraft exhaust plumes substantially lowers the optical depth of young contrails thereby decreasing the occurrence, lifetime, and radiative impact of contrail cirrus. The improved scientific understanding of initial ice formation processes allows atmospheric effects of mitigation options related to contrail cirrus to be investigated in unprecedented detail, especially those associated with the use of alternative aviation fuels. This study will enable a leap forward toward more reliable simulations addressing global climatic effects of contrail-induced cloudiness.

Item URL in elib:https://elib.dlr.de/103837/
Document Type:Article
Title:The importance of contrail ice formation for mitigating the climate impact of aviation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kärcher, BerndDLR, IPAUNSPECIFIED
Date:6 April 2016
Journal or Publication Title:JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
Volume:121
DOI :10.1002/2015JD024696
Publisher:Wiley
ISSN:2169-897X
Status:Published
Keywords:contrail cirrus, Mitigation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
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 Trace Species
Deposited By: Kärcher, Prof. Bernd
Deposited On:11 Apr 2016 11:41
Last Modified:31 Jul 2019 20:01

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