Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012
15 páginas, 4 tablas, 8 figuras The variability of the turbulent kinetic energy dissipation due to internal waves is quantified using a finescale parameterization applied to the A25 Greenland–Portugal transect repeated every two years from 2002 to 2012. The internal wave velocity shear and strain ar...
Published in: | Journal of Physical Oceanography |
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Language: | English |
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American Meteorological Society
2016
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Online Access: | http://hdl.handle.net/10261/134974 https://doi.org/10.1175/JPO-D-15-0186.1 https://doi.org/10.13039/501100003329 |
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ftcsic:oai:digital.csic.es:10261/134974 2024-02-11T10:04:21+01:00 Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012 Ferron, B. Kokoszka, Florian Mercier, Herlé Lherminier, Pascale Ríos, Aida F. Thierry, V. Ministerio de Economía y Competitividad (España) 2016 http://hdl.handle.net/10261/134974 https://doi.org/10.1175/JPO-D-15-0186.1 https://doi.org/10.13039/501100003329 en eng American Meteorological Society #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2013-41048-P Publisher's version http://dx.doi.org/10.1175/JPO-D-15-0186.1 Sí Journal of Physical Oceanography 46: 1989-2003 (2016) 0022-3670 http://hdl.handle.net/10261/134974 doi:10.1175/JPO-D-15-0186.1 1520-0485 http://dx.doi.org/10.13039/501100003329 open Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Diapycnal mixing Internal waves Mountain waves Topographic effects Turbulence artículo http://purl.org/coar/resource_type/c_6501 2016 ftcsic https://doi.org/10.1175/JPO-D-15-0186.110.13039/501100003329 2024-01-16T10:16:35Z 15 páginas, 4 tablas, 8 figuras The variability of the turbulent kinetic energy dissipation due to internal waves is quantified using a finescale parameterization applied to the A25 Greenland–Portugal transect repeated every two years from 2002 to 2012. The internal wave velocity shear and strain are estimated for each cruise at 91 stations from full depth vertical profiles of density and velocity. The 2002–12 averaged dissipation rate 〈ε2002–2012〉 in the upper ocean lays in the range 1–10 × 10−10 W kg−1. At depth, 〈ε2002–2012〉 is smaller than 1 × 10−10 W kg−1 except over rough topography found at the continental slopes, the Reykjanes Ridge, and in a region delimited by the Azores–Biscay Rise and Eriador Seamount. There, the vertical energy flux of internal waves is preferentially oriented toward the surface and 〈ε2002–2012〉 is in the range 1–20 × 10−10 W kg−1. The interannual variability in the dissipation rates is remarkably small over the whole transect. A few strong dissipation rate events exceeding the uncertainty of the finescale parameterization occur at depth between the Azores–Biscay Rise and Eriador Seamount. This region is also marked by mesoscale eddying flows resulting in enhanced surface energy level and enhanced bottom velocities. Estimates of the vertical energy fluxes into the internal tide and into topographic internal waves suggest that the latter are responsible for the strong dissipation events. At Eriador Seamount, both topographic internal waves and the internal tide contribute with the same order of magnitude to the dissipation rate while around the Reykjanes Ridge the internal tide provides the bulk of the dissipation rate The OVIDE project was supported by IFREMER, CNRS/INSU and the National Program LEFE. B. Ferron, H. Mercier, and T. Huck were supported by the French National Center for Scientific Research (CNRS), P. Lherminier and V. Thierry by the French Institute for Marine Science (Ifremer), and F. Kokoszka by the European University of Brittany. Aida F. Ríos was funded by the ... Article in Journal/Newspaper Greenland North Atlantic Digital.CSIC (Spanish National Research Council) Eriador Seamount ENVELOPE(-25.333,-25.333,54.833,54.833) Greenland Reykjanes ENVELOPE(-22.250,-22.250,65.467,65.467) Journal of Physical Oceanography 46 7 1989 2003 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Diapycnal mixing Internal waves Mountain waves Topographic effects Turbulence |
spellingShingle |
Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Diapycnal mixing Internal waves Mountain waves Topographic effects Turbulence Ferron, B. Kokoszka, Florian Mercier, Herlé Lherminier, Pascale Ríos, Aida F. Thierry, V. Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012 |
topic_facet |
Geographic location/entity North Atlantic Ocean Circulation/ Dynamics Diapycnal mixing Internal waves Mountain waves Topographic effects Turbulence |
description |
15 páginas, 4 tablas, 8 figuras The variability of the turbulent kinetic energy dissipation due to internal waves is quantified using a finescale parameterization applied to the A25 Greenland–Portugal transect repeated every two years from 2002 to 2012. The internal wave velocity shear and strain are estimated for each cruise at 91 stations from full depth vertical profiles of density and velocity. The 2002–12 averaged dissipation rate 〈ε2002–2012〉 in the upper ocean lays in the range 1–10 × 10−10 W kg−1. At depth, 〈ε2002–2012〉 is smaller than 1 × 10−10 W kg−1 except over rough topography found at the continental slopes, the Reykjanes Ridge, and in a region delimited by the Azores–Biscay Rise and Eriador Seamount. There, the vertical energy flux of internal waves is preferentially oriented toward the surface and 〈ε2002–2012〉 is in the range 1–20 × 10−10 W kg−1. The interannual variability in the dissipation rates is remarkably small over the whole transect. A few strong dissipation rate events exceeding the uncertainty of the finescale parameterization occur at depth between the Azores–Biscay Rise and Eriador Seamount. This region is also marked by mesoscale eddying flows resulting in enhanced surface energy level and enhanced bottom velocities. Estimates of the vertical energy fluxes into the internal tide and into topographic internal waves suggest that the latter are responsible for the strong dissipation events. At Eriador Seamount, both topographic internal waves and the internal tide contribute with the same order of magnitude to the dissipation rate while around the Reykjanes Ridge the internal tide provides the bulk of the dissipation rate The OVIDE project was supported by IFREMER, CNRS/INSU and the National Program LEFE. B. Ferron, H. Mercier, and T. Huck were supported by the French National Center for Scientific Research (CNRS), P. Lherminier and V. Thierry by the French Institute for Marine Science (Ifremer), and F. Kokoszka by the European University of Brittany. Aida F. Ríos was funded by the ... |
author2 |
Ministerio de Economía y Competitividad (España) |
format |
Article in Journal/Newspaper |
author |
Ferron, B. Kokoszka, Florian Mercier, Herlé Lherminier, Pascale Ríos, Aida F. Thierry, V. |
author_facet |
Ferron, B. Kokoszka, Florian Mercier, Herlé Lherminier, Pascale Ríos, Aida F. Thierry, V. |
author_sort |
Ferron, B. |
title |
Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012 |
title_short |
Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012 |
title_full |
Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012 |
title_fullStr |
Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012 |
title_full_unstemmed |
Variability of the Turbulent Kinetic Energy Dissipation along the A25 Greenland–Portugal Transect Repeated from 2002 to 2012 |
title_sort |
variability of the turbulent kinetic energy dissipation along the a25 greenland–portugal transect repeated from 2002 to 2012 |
publisher |
American Meteorological Society |
publishDate |
2016 |
url |
http://hdl.handle.net/10261/134974 https://doi.org/10.1175/JPO-D-15-0186.1 https://doi.org/10.13039/501100003329 |
long_lat |
ENVELOPE(-25.333,-25.333,54.833,54.833) ENVELOPE(-22.250,-22.250,65.467,65.467) |
geographic |
Eriador Seamount Greenland Reykjanes |
geographic_facet |
Eriador Seamount Greenland Reykjanes |
genre |
Greenland North Atlantic |
genre_facet |
Greenland North Atlantic |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2013-41048-P Publisher's version http://dx.doi.org/10.1175/JPO-D-15-0186.1 Sí Journal of Physical Oceanography 46: 1989-2003 (2016) 0022-3670 http://hdl.handle.net/10261/134974 doi:10.1175/JPO-D-15-0186.1 1520-0485 http://dx.doi.org/10.13039/501100003329 |
op_rights |
open |
op_doi |
https://doi.org/10.1175/JPO-D-15-0186.110.13039/501100003329 |
container_title |
Journal of Physical Oceanography |
container_volume |
46 |
container_issue |
7 |
container_start_page |
1989 |
op_container_end_page |
2003 |
_version_ |
1790600945348902912 |