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Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails

Myhre, Gunnar and Kvalevag, Maria and Rädel, Gaby and Cook, Jolene and Shine, Keith P. and Clarke, Hannah and Karcher, Fernand and Markowicz, Krzysztof and Kardas, Aleksandra and Wolkenberg, Paulina and Balkanski, Yves and Ponater, Michael and Forster, Piers and Rap, Alexandru and Rodriguez de Leon, Ruben (2009) Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails. Meteorologische Zeitschrift, 18 (6), pp. 585-596. DOI: 10.1127/0941-2948/2009/0411.

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Official URL: http://www.schweizerbart.de/papers/metz/detail/18/74377


Seven groups have participated in an intercomparison study of calculations of radiative forcing (RF) due to stratospheric water vapour (SWV) and contrails. A combination of detailed radiative transfer schemes and codes for global-scale calculations has been used, as well as a combination of idealized simulations and more realistic global-scale changes in stratospheric water vapour and contrails. Detailed line-by-line codes agree within about 15% for longwave (LW) and shortwave (SW) RF, except in one case where the difference is 30%. Since the LW and SW RF due to contrails and SWV changes are of opposite sign, the differences between the models seen in the individual LW and SW components can be either compensated or strengthened in the net RF, and thus in relative terms uncertainties are much larger for the net RF. Some of the models used for global-scale simulations of changes in SWV and contrails differ substantially in RF from the more detailed radiative transfer schemes. For the global-scale calculations we use a method of weighting the results to calculate a best estimate based on their performance compared to the more detailed radiative transfer schemes in the idealized simulations.

Document Type:Article
Title:Intercomparison of radiative forcing calculations of stratospheric water vapour and contrails
AuthorsInstitution or Email of Authors
Myhre, GunnarUniv. Oslo, N
Kvalevag, MariaUniv. Oslo, N
Rädel, GabyUniv. Reading, UK
Cook, JoleneUniv. Reading, UK
Shine, Keith P.Univ. Reading, UK
Clarke, HannahCNRM Meteo France, Toulouse, F
Karcher, FernandCNRM Meteo France, Toulouse, F
Markowicz, KrzysztofUniv. Warschau, PL
Kardas, AleksandraUniv. Warschau, PL
Wolkenberg, PaulinaUniv. Warschau, PL
Balkanski, YvesLSCE/IPSL Cedex France
Ponater, MichaelDLR
Forster, PiersUniv. Leeds, UK
Rap, AlexandruUniv. Leeds, UK
Rodriguez de Leon, RubenManchester Metropolitan Univ., Manchester, UK
Journal or Publication Title:Meteorologische Zeitschrift
Refereed publication:Yes
In Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 585-596
Keywords:Radiative Forcing, Contrails, Stratospheric Water Vapour
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Transport System
DLR - Research area:Transport
DLR - Program:V VS - Verkehrssystem
DLR - Research theme (Project):V - Umweltwirkungen des Verkehrs (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Dynamics
Deposited By: Dr.rer.nat. Michael Ponater
Deposited On:15 Dec 2009 11:37
Last Modified:26 Sep 2014 03:02

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