A wind-driven model of the ocean surface layer with wave radiation physics
Abstract Surface windstress transfers energy to the surface mixed layer of the ocean, and this energy partly radiates as internal gravity waves with near-inertial frequencies into the stratified ocean below the mixed layer where it is available for mixing. Numerical and analytical models provide est...
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Springer Science and Business Media LLC
2020
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crspringernat:10.1007/s10236-020-01376-2 2023-05-15T17:33:35+02:00 A wind-driven model of the ocean surface layer with wave radiation physics Olbers, Dirk Jurgenowski, Philipp Eden, Carsten Deutsche Forschungsgemeinschaft 2020 http://dx.doi.org/10.1007/s10236-020-01376-2 https://link.springer.com/content/pdf/10.1007/s10236-020-01376-2.pdf https://link.springer.com/article/10.1007/s10236-020-01376-2/fulltext.html en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Ocean Dynamics volume 70, issue 8, page 1067-1088 ISSN 1616-7341 1616-7228 Oceanography journal-article 2020 crspringernat https://doi.org/10.1007/s10236-020-01376-2 2022-01-04T15:13:54Z Abstract Surface windstress transfers energy to the surface mixed layer of the ocean, and this energy partly radiates as internal gravity waves with near-inertial frequencies into the stratified ocean below the mixed layer where it is available for mixing. Numerical and analytical models provide estimates of the energy transfer into the mixed layer and the fraction radiated into the interior, but with large uncertainties, which we aim to reduce in the present study. An analytical slab model of the mixed layer used before in several studies is extended by consistent physics of wave radiation into the interior. Rayleigh damping, controlling the physics of the original slab model, is absent in the extended model and the wave-induced pressure gradient is resolved. The extended model predicts the energy transfer rates, both in physical and wavenumber-frequency space, associated with the wind forcing, dissipation in the mixed layer, and wave radiation at the base as function of a few parameters: mixed layer depth, Coriolis frequency and Brunt-Väisälä frequency below the mixed layer, and parameters of the applied windstress spectrum. The results of the model are satisfactorily validated with a realistic numerical model of the North Atlantic Ocean. Article in Journal/Newspaper North Atlantic Springer Nature (via Crossref) Ocean Dynamics 70 8 1067 1088 |
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Open Polar |
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Springer Nature (via Crossref) |
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crspringernat |
language |
English |
topic |
Oceanography |
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Oceanography Olbers, Dirk Jurgenowski, Philipp Eden, Carsten A wind-driven model of the ocean surface layer with wave radiation physics |
topic_facet |
Oceanography |
description |
Abstract Surface windstress transfers energy to the surface mixed layer of the ocean, and this energy partly radiates as internal gravity waves with near-inertial frequencies into the stratified ocean below the mixed layer where it is available for mixing. Numerical and analytical models provide estimates of the energy transfer into the mixed layer and the fraction radiated into the interior, but with large uncertainties, which we aim to reduce in the present study. An analytical slab model of the mixed layer used before in several studies is extended by consistent physics of wave radiation into the interior. Rayleigh damping, controlling the physics of the original slab model, is absent in the extended model and the wave-induced pressure gradient is resolved. The extended model predicts the energy transfer rates, both in physical and wavenumber-frequency space, associated with the wind forcing, dissipation in the mixed layer, and wave radiation at the base as function of a few parameters: mixed layer depth, Coriolis frequency and Brunt-Väisälä frequency below the mixed layer, and parameters of the applied windstress spectrum. The results of the model are satisfactorily validated with a realistic numerical model of the North Atlantic Ocean. |
author2 |
Deutsche Forschungsgemeinschaft |
format |
Article in Journal/Newspaper |
author |
Olbers, Dirk Jurgenowski, Philipp Eden, Carsten |
author_facet |
Olbers, Dirk Jurgenowski, Philipp Eden, Carsten |
author_sort |
Olbers, Dirk |
title |
A wind-driven model of the ocean surface layer with wave radiation physics |
title_short |
A wind-driven model of the ocean surface layer with wave radiation physics |
title_full |
A wind-driven model of the ocean surface layer with wave radiation physics |
title_fullStr |
A wind-driven model of the ocean surface layer with wave radiation physics |
title_full_unstemmed |
A wind-driven model of the ocean surface layer with wave radiation physics |
title_sort |
wind-driven model of the ocean surface layer with wave radiation physics |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1007/s10236-020-01376-2 https://link.springer.com/content/pdf/10.1007/s10236-020-01376-2.pdf https://link.springer.com/article/10.1007/s10236-020-01376-2/fulltext.html |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Ocean Dynamics volume 70, issue 8, page 1067-1088 ISSN 1616-7341 1616-7228 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1007/s10236-020-01376-2 |
container_title |
Ocean Dynamics |
container_volume |
70 |
container_issue |
8 |
container_start_page |
1067 |
op_container_end_page |
1088 |
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1766132133658624000 |