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| Titel |
Wind Stress Variation over the horizontally variable Roughness of Ocean Surface: Theory and Experiment |
| VerfasserIn |
Lev Ostrovsky, Mikhail Charnotskii, Stanislav Ermakov |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250076983
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| Zusammenfassung |
| We consider the effect of localized variations of the sea surface wave roughness on the near- surface turbulent wind. These variations can be caused by oil, surfactants, inhomogeneous currents, internal waves, etc. The corresponding transition effects in the turbulent wind over the sea is a very difficult problem, if only due to uncertainties in the turbulent closure models for the non-stationary and inhomogeneous flows. Here we suggest some practical schemes for calculating wind variation near the surface, the average short-wave roughness of which is varying in space and time. They include a generalized two-layer model, three-layer model, and a direct approach based on the solution of the Reynolds-type equations for the air flow velocity and turbulent kinetic energy. Laboratory experiments in a wind-wave tank are also described and
compared with the theory. |
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