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| Titel |
iGen 0.1: the automated generation of a parameterisation of entrainment in marine stratocumulus |
| VerfasserIn |
D. F. Tang, S. Dobbie |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 4, no. 3 ; Nr. 4, no. 3 (2011-09-16), S.797-807 |
| Datensatznummer |
250001788
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| Publikation (Nr.) |
 copernicus.org/gmd-4-797-2011.pdf |
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| Zusammenfassung |
| In a previous paper we described a new technique for automatically
generating parameterisations using a program called iGen. iGen
generates parameterisations by analysing the source code of a~high
resolution model that resolves the physics to be parameterised. In
order to demonstrate that this technique scales up to deal with models
of realistic complexity we have used iGen to generate
a parameterisation of entrainment in marine stratocumulus. We describe how iGen was used to analyse the source
code of an eddy resolving model (ERM) and generate a parameterisation of entrainment velocity in marine
stratocumulus in terms of the large-scale state of the boundary
layer. The parameterisation was tested against results from the
DYCOMS-II intercomparison of ERM models and iGen's
parameterisation of mean entrainment velocity was found to be
5.27 × 10−3 ± 0.62 × 10−3 m s−1 compared to
5.2 × 10−3 ± 0.8 × 10−3 m s−1 for the
DYCOMS-II ensemble of large eddy simulation (LES) models. |
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