Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below
In this paper an attempt is made to explain some of the features of classical aerodynamic classification based on the effect of mobility of roughness elements (Kitaigorodskii 1968) for both sides of the air-sea interface by incorporating into such a classification the effect of breaking wind waves....
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Boreal Environment Research Publishing Board
2024
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Online Access: | http://hdl.handle.net/10138/578012 |
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ftunivhelsihelda:oai:helda.helsinki.fi:10138/578012 2024-09-15T18:00:10+00:00 Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below Kitaigorodskii, S.A. 2024-06-27T13:44:30Z 127-136 application/pdf http://hdl.handle.net/10138/578012 eng eng Boreal Environment Research Publishing Board Boreal Environment Research 1239-6095 1797-2469 2 3 http://hdl.handle.net/10138/578012 Suomen ympäristökeskus CC BY 4.0 openAccess Artikkeli lehdessä 2024 ftunivhelsihelda 2024-08-21T23:48:04Z In this paper an attempt is made to explain some of the features of classical aerodynamic classification based on the effect of mobility of roughness elements (Kitaigorodskii 1968) for both sides of the air-sea interface by incorporating into such a classification the effect of breaking wind waves. Also the "fluctuating" regime of the sea surface roughness discussed by Toba et al. (1991) is explained by taking into account the existence of the dissipation subrange (Kitaigorodskii 1983, 1986, 1992a, 1992b, 1997) and the inverse cascade of energy in the well developed wind wave field (Zaharoff and Zaslavskii 1982, and Kitaigorodskii 1983). In the last section of the paper a theory is proposed on how to incorporate the effect of wave breaking in the parametrization of the sea surface roughness as seen from below. It is shown that aerodynamically smooth conditions in the classical sense never exist below the sea surface, since effective turbulent viscosity due to shear free turbulence generated by wave breaking is much larger than molecular viscosity. Article in Journal/Newspaper Boreal Environment Research HELDA – University of Helsinki Open Repository |
institution |
Open Polar |
collection |
HELDA – University of Helsinki Open Repository |
op_collection_id |
ftunivhelsihelda |
language |
English |
description |
In this paper an attempt is made to explain some of the features of classical aerodynamic classification based on the effect of mobility of roughness elements (Kitaigorodskii 1968) for both sides of the air-sea interface by incorporating into such a classification the effect of breaking wind waves. Also the "fluctuating" regime of the sea surface roughness discussed by Toba et al. (1991) is explained by taking into account the existence of the dissipation subrange (Kitaigorodskii 1983, 1986, 1992a, 1992b, 1997) and the inverse cascade of energy in the well developed wind wave field (Zaharoff and Zaslavskii 1982, and Kitaigorodskii 1983). In the last section of the paper a theory is proposed on how to incorporate the effect of wave breaking in the parametrization of the sea surface roughness as seen from below. It is shown that aerodynamically smooth conditions in the classical sense never exist below the sea surface, since effective turbulent viscosity due to shear free turbulence generated by wave breaking is much larger than molecular viscosity. |
format |
Article in Journal/Newspaper |
author |
Kitaigorodskii, S.A. |
spellingShingle |
Kitaigorodskii, S.A. Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below |
author_facet |
Kitaigorodskii, S.A. |
author_sort |
Kitaigorodskii, S.A. |
title |
Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below |
title_short |
Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below |
title_full |
Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below |
title_fullStr |
Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below |
title_full_unstemmed |
Wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below |
title_sort |
wind wave breaking and aerodynamic roughness of the air-sea interface as seen from above and from below |
publisher |
Boreal Environment Research Publishing Board |
publishDate |
2024 |
url |
http://hdl.handle.net/10138/578012 |
genre |
Boreal Environment Research |
genre_facet |
Boreal Environment Research |
op_relation |
Boreal Environment Research 1239-6095 1797-2469 2 3 http://hdl.handle.net/10138/578012 Suomen ympäristökeskus |
op_rights |
CC BY 4.0 openAccess |
_version_ |
1810437311253446656 |