[746] - Two adaptive radiative transfer schemes for numerical weather prediction models

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Venema, V., Schomburg, A., Ament, F., Simmer, C., 2007. Two adaptive radiative transfer schemes for numerical weather prediction models. Atmospheric Chemistry and Physics, 7, 5659 - 5674. DOI: 10.5194/acp-7-5659-2007.
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Title(s):Main Title: Two adaptive radiative transfer schemes for numerical weather prediction models
Description(s):Abstract: Radiative transfer calculations in atmospheric models are computationally expensive, even if based on simplifications such as the _-two-stream approximation. In most weather prediction models these parameterisation schemes are therefore called infrequently, accepting additional model error due to the persistence assumption between calls. This paper presents two so-called adaptive parameterisation schemes for radiative transfer in a limited area model: A perturbation scheme that exploits temporal correlations and a local-search scheme that mainly takes advantage of spatial correlations. Utilising these correlations and with similar computational resources, the schemes are able to predict the surface net radiative fluxes more accurately than a scheme based on the persistence assumption. An important property of these adaptive schemes is that their accuracy does not decrease much in case of strong reductions in the number of calls to the _-two-stream scheme. It is hypothesised that the core idea can also be employed in parameterisation schemes for other processes and in other dynamical models.
Identifier(s):DOI: 10.5194/acp-7-5659-2007
Responsible Party
Creator(s):Author: Victor Venema
Author: Annika Schomburg
Author: Felix Ament
Author: Clemens Simmer
Publisher:European Geosciences Union
TR32 Topic:Atmosphere
Subject(s):CRC/TR32 Keywords: Numerical Weather Prediction, Radiative Transfer, Atmospheric Modelling, COSMO
File Details
File Name:2007_Venema_ACP.pdf
Data Type:Text
Size(s):16 Pages
File Size:1343 kB (1.312 MB)
Date(s):Date Accepted: 2007-10-30
Issued: 2007-11-15
Mime Type:application/pdf
Data Format:PDF
Download Permission:OnlyTR32
General Access and Use Conditions:For internal use only
Access Limitations:For internal use only
Licence:TR32DB Data policy agreement
North:-no map data
Measurement Region:Other
Measurement Location:--Other--
Specific Informations - Publication
Article Type:Journal
Source:Atmospheric Chemistry and Physics
Number Of Pages:16
Page Range:5659 - 5674
Metadata Details
Metadata Creator:Victor Venema
Metadata Created:2013-12-03
Metadata Last Updated:2013-12-12
Funding Phase:1
Metadata Language:English
Metadata Version:V40
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