Two adaptive radiative transfer schemes for numerical weather prediction models
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| Title: | Main Title: Two adaptive radiative transfer schemes for numerical weather prediction models |
| Description: | 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: | 10.5194/acp-7-5659-2007 (DOI) |
Responsible Party
| Creators: | Victor Venema (Author), Annika Schomburg (Author), Felix Ament (Author), Clemens Simmer (Author) |
| Publisher: | European Geosciences Union |
| Publication Year: | 2013 |
Topic
| TR32 Topic: | Atmosphere |
| Related Subproject: | C4 |
| Subjects: | Keywords: Numerical Weather Prediction, Radiative Transfer, Atmospheric Modelling, COSMO |
File Details
| Filename: | 2007_Venema_ACP.pdf |
| Data Type: | Text - Article |
| Size: | 16 Pages |
| File Size: | 1.3 MB |
| Dates: | Accepted: 30.10.2007 Issued: 15.11.2007 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | For internal use only |
| Access Limitations: | For internal use only |
| Licence: | [TR32DB] Data policy agreement |
Geographic
Specific Information - Publication
| Publication Status: | Published |
| Review Status: | Peer reviewed |
| Publication Type: | Article |
| Article Type: | Journal |
| Source: | Atmospheric Chemistry and Physics |
| Source Website: | www.atmos-chem-phys.net |
| Volume: | 7 |
| Number of Pages: | 16 (5659 - 5674) |
Metadata Details
| Metadata Creator: | Victor Venema |
| Metadata Created: | 03.12.2013 |
| Metadata Last Updated: | 03.12.2013 |
| Subproject: | C4 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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| Page Visits: | 707 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 0 |
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