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| Titel |
Analysis of the effect of the coastal discontinuity on near-surface flow |
| VerfasserIn |
S. C. Pryor, R. J. Barthelmie |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 16, no. 7 ; Nr. 16, no. 7, S.882-888 |
| Datensatznummer |
250013348
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| Publikation (Nr.) |
 copernicus.org/angeo-16-882-1998.pdf |
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| Zusammenfassung |
Conditional sampling is used herein to
examine the effect of fetch, stability, and surface roughness changes on wind
speeds in the coastal zone. Using data from an offshore wind farm it is shown
that at a distance of 1.2–1.7 km from the coast, up to a height of 20 m above
the surface, differences in wind speed distributions from onshore and offshore
masts are statistically significant for flow moving offshore under all stability
conditions. In contrast, differences between the distribution of wind speeds at
38 and 48 m at masts located at the coast and in the coastal zone are not
significant for flow moving offshore, indicating that flow at these heights is
not fully adjusted to the change in surface roughness (land to sea). These
findings are in accordance with calculations of the internal boundary layer
(IBL) height which indicate that the IBL would frequently be below the two upper
measurement heights at 1.2–1.6 km from the coast. The analyses presented here
indicate that the wind speed distribution at a potential offshore wind farm site
is not solely dependent on fetch (distance from the coast) but also depends on
the stability climate.
Key words. Meteorology and atmospheric dynamics ·
Mesoscale meteorology · Ocean-atmosphere interaction · Marine meteorology |
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