Estimates of wind power and radiative near-inertial internal wave flux
Abstract Energy transfer mechanisms between the atmosphere and the deep ocean have been studied for many years. Their importance to the ocean’s energy balance and possible implications on mixing are widely accepted. The slab model by Pollard (Deep-Sea Res Oceanogr Abstr 17(4):795–812, 1970) is a wel...
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2020
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Online Access: | http://dx.doi.org/10.1007/s10236-020-01388-y https://link.springer.com/content/pdf/10.1007/s10236-020-01388-y.pdf https://link.springer.com/article/10.1007/s10236-020-01388-y/fulltext.html |
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crspringernat:10.1007/s10236-020-01388-y 2023-05-15T17:29:14+02:00 Estimates of wind power and radiative near-inertial internal wave flux The hybrid slab model and its application to the North Atlantic Voelker, Georg S. Olbers, Dirk Walter, Maren Mertens, Christian Myers, Paul G. Deutsche Forschungsgemeinschaft Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada 2020 http://dx.doi.org/10.1007/s10236-020-01388-y https://link.springer.com/content/pdf/10.1007/s10236-020-01388-y.pdf https://link.springer.com/article/10.1007/s10236-020-01388-y/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 11, page 1357-1376 ISSN 1616-7341 1616-7228 Oceanography journal-article 2020 crspringernat https://doi.org/10.1007/s10236-020-01388-y 2022-01-04T16:25:34Z Abstract Energy transfer mechanisms between the atmosphere and the deep ocean have been studied for many years. Their importance to the ocean’s energy balance and possible implications on mixing are widely accepted. The slab model by Pollard (Deep-Sea Res Oceanogr Abstr 17(4):795–812, 1970) is a well-established simulation of near-inertial motion and energy inferred through wind-ocean interaction. Such a model is set up with hourly wind forcing from the NCEP-CFSR reanalysis that allows computations up to high latitudes without loss of resonance. Augmenting the one-dimensional model with the horizontal divergence of the near-inertial current field leads to direct estimates of energy transfer spectra of internal wave radiation from the mixed layer base into the ocean interior. Calculations using this hybrid model are carried out for the North Atlantic during the years 1989 and 1996, which are associated with positive and negative North Atlantic Oscillation index, respectively. Results indicate a range of meridional regimes with distinct energy transfer ratios. These are interpreted in terms of the mixed layer depth, the buoyancy frequency at the mixed layer base, and the wind field structure. The average ratio of radiated energy fluxes from the mixed layer to near-inertial wind power for both years is approximately 12%. The dependence on the wind structure is supported by simulations of idealized wind stress fronts with variable width and translation speeds. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Springer Nature (via Crossref) Pollard ENVELOPE(64.617,64.617,-70.467,-70.467) Ocean Dynamics 70 11 1357 1376 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
Oceanography |
spellingShingle |
Oceanography Voelker, Georg S. Olbers, Dirk Walter, Maren Mertens, Christian Myers, Paul G. Estimates of wind power and radiative near-inertial internal wave flux |
topic_facet |
Oceanography |
description |
Abstract Energy transfer mechanisms between the atmosphere and the deep ocean have been studied for many years. Their importance to the ocean’s energy balance and possible implications on mixing are widely accepted. The slab model by Pollard (Deep-Sea Res Oceanogr Abstr 17(4):795–812, 1970) is a well-established simulation of near-inertial motion and energy inferred through wind-ocean interaction. Such a model is set up with hourly wind forcing from the NCEP-CFSR reanalysis that allows computations up to high latitudes without loss of resonance. Augmenting the one-dimensional model with the horizontal divergence of the near-inertial current field leads to direct estimates of energy transfer spectra of internal wave radiation from the mixed layer base into the ocean interior. Calculations using this hybrid model are carried out for the North Atlantic during the years 1989 and 1996, which are associated with positive and negative North Atlantic Oscillation index, respectively. Results indicate a range of meridional regimes with distinct energy transfer ratios. These are interpreted in terms of the mixed layer depth, the buoyancy frequency at the mixed layer base, and the wind field structure. The average ratio of radiated energy fluxes from the mixed layer to near-inertial wind power for both years is approximately 12%. The dependence on the wind structure is supported by simulations of idealized wind stress fronts with variable width and translation speeds. |
author2 |
Deutsche Forschungsgemeinschaft Canadian Network for Research and Innovation in Machining Technology, Natural Sciences and Engineering Research Council of Canada |
format |
Article in Journal/Newspaper |
author |
Voelker, Georg S. Olbers, Dirk Walter, Maren Mertens, Christian Myers, Paul G. |
author_facet |
Voelker, Georg S. Olbers, Dirk Walter, Maren Mertens, Christian Myers, Paul G. |
author_sort |
Voelker, Georg S. |
title |
Estimates of wind power and radiative near-inertial internal wave flux |
title_short |
Estimates of wind power and radiative near-inertial internal wave flux |
title_full |
Estimates of wind power and radiative near-inertial internal wave flux |
title_fullStr |
Estimates of wind power and radiative near-inertial internal wave flux |
title_full_unstemmed |
Estimates of wind power and radiative near-inertial internal wave flux |
title_sort |
estimates of wind power and radiative near-inertial internal wave flux |
publisher |
Springer Science and Business Media LLC |
publishDate |
2020 |
url |
http://dx.doi.org/10.1007/s10236-020-01388-y https://link.springer.com/content/pdf/10.1007/s10236-020-01388-y.pdf https://link.springer.com/article/10.1007/s10236-020-01388-y/fulltext.html |
long_lat |
ENVELOPE(64.617,64.617,-70.467,-70.467) |
geographic |
Pollard |
geographic_facet |
Pollard |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
Ocean Dynamics volume 70, issue 11, page 1357-1376 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/s10236-020-01388-y |
container_title |
Ocean Dynamics |
container_volume |
70 |
container_issue |
11 |
container_start_page |
1357 |
op_container_end_page |
1376 |
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1766122890311237632 |