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| Titel |
A case study of sea breeze blocking regulated by sea surface temperature along the English south coast |
| VerfasserIn |
J. K. Sweeney, J. M. Chagnon, S. L. Gray |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 14, no. 9 ; Nr. 14, no. 9 (2014-05-06), S.4409-4418 |
| Datensatznummer |
250118680
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| Publikation (Nr.) |
 copernicus.org/acp-14-4409-2014.pdf |
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| Zusammenfassung |
| The sensitivity of sea breeze structure to sea surface temperature (SST) and
coastal orography is investigated in convection-permitting Met Office Unified
Model simulations of a case study along the south coast of England. Changes
in SST of 1 K are shown to significantly modify the structure of the sea
breeze immediately offshore. On the day of the case study, the sea breeze was
partially blocked by coastal orography, particularly within Lyme Bay. The
extent to which the flow is blocked depends strongly on the static stability
of the marine boundary layer. In experiments with colder SST, the marine
boundary layer is more stable, and the degree of blocking is more pronounced.
Although a colder SST would also imply a larger land–sea temperature contrast
and hence a stronger onshore wind – an effect which alone would discourage
blocking – the increased static stability exerts a dominant control over
whether blocking takes place. The implications of prescribing fixed SST from
climatology in numerical weather prediction model forecasts of the sea breeze
are discussed. |
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