On the spatial and temporal distribution of near-inertial energy in the Southern Ocean
We use an eddying realistic primitive-equation model of the Southern Ocean to examine the spatial and temporal distribution of near-inertial wind-power input (WPI) and near-inertial energy (NIE) in the Southern Ocean. We find that the modeled near-inertial WPI is almost proportional to inertial wind...
Published in: | Journal of Geophysical Research: Oceans |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:50474 2023-05-15T18:23:55+02:00 On the spatial and temporal distribution of near-inertial energy in the Southern Ocean Rath, Willi Greatbatch, Richard J. Zhai, Xiaoming 2014-01 https://ueaeprints.uea.ac.uk/id/eprint/50474/ https://doi.org/10.1002/2013JC009246 unknown Rath, Willi, Greatbatch, Richard J. and Zhai, Xiaoming (2014) On the spatial and temporal distribution of near-inertial energy in the Southern Ocean. Journal of Geophysical Research - Oceans, 119 (1). pp. 359-376. ISSN 2169-9275 doi:10.1002/2013JC009246 Article PeerReviewed 2014 ftuniveastangl https://doi.org/10.1002/2013JC009246 2023-01-30T21:39:26Z We use an eddying realistic primitive-equation model of the Southern Ocean to examine the spatial and temporal distribution of near-inertial wind-power input (WPI) and near-inertial energy (NIE) in the Southern Ocean. We find that the modeled near-inertial WPI is almost proportional to inertial wind-stress variance (IWSV), while the modeled NIE is modulated by the inverse of the mixed-layer depth. We go on to assess recent decadal trends of near-inertial WPI from trends of IWSV based on reanalysis wind stress. Averaged over the Southern Ocean, annual-mean IWSV is found to have increased by 16% over the years 1979–2011. Part of the increase of IWSV is found to be related to the positive trend of the Southern-Annular Mode over the same period. Finally, we show that there are horizontal local maxima of NIE at depth that are almost exclusively associated with anticyclonic eddies. Article in Journal/Newspaper Southern Ocean University of East Anglia: UEA Digital Repository Southern Ocean Journal of Geophysical Research: Oceans 119 1 359 376 |
institution |
Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
unknown |
description |
We use an eddying realistic primitive-equation model of the Southern Ocean to examine the spatial and temporal distribution of near-inertial wind-power input (WPI) and near-inertial energy (NIE) in the Southern Ocean. We find that the modeled near-inertial WPI is almost proportional to inertial wind-stress variance (IWSV), while the modeled NIE is modulated by the inverse of the mixed-layer depth. We go on to assess recent decadal trends of near-inertial WPI from trends of IWSV based on reanalysis wind stress. Averaged over the Southern Ocean, annual-mean IWSV is found to have increased by 16% over the years 1979–2011. Part of the increase of IWSV is found to be related to the positive trend of the Southern-Annular Mode over the same period. Finally, we show that there are horizontal local maxima of NIE at depth that are almost exclusively associated with anticyclonic eddies. |
format |
Article in Journal/Newspaper |
author |
Rath, Willi Greatbatch, Richard J. Zhai, Xiaoming |
spellingShingle |
Rath, Willi Greatbatch, Richard J. Zhai, Xiaoming On the spatial and temporal distribution of near-inertial energy in the Southern Ocean |
author_facet |
Rath, Willi Greatbatch, Richard J. Zhai, Xiaoming |
author_sort |
Rath, Willi |
title |
On the spatial and temporal distribution of near-inertial energy in the Southern Ocean |
title_short |
On the spatial and temporal distribution of near-inertial energy in the Southern Ocean |
title_full |
On the spatial and temporal distribution of near-inertial energy in the Southern Ocean |
title_fullStr |
On the spatial and temporal distribution of near-inertial energy in the Southern Ocean |
title_full_unstemmed |
On the spatial and temporal distribution of near-inertial energy in the Southern Ocean |
title_sort |
on the spatial and temporal distribution of near-inertial energy in the southern ocean |
publishDate |
2014 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/50474/ https://doi.org/10.1002/2013JC009246 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Rath, Willi, Greatbatch, Richard J. and Zhai, Xiaoming (2014) On the spatial and temporal distribution of near-inertial energy in the Southern Ocean. Journal of Geophysical Research - Oceans, 119 (1). pp. 359-376. ISSN 2169-9275 doi:10.1002/2013JC009246 |
op_doi |
https://doi.org/10.1002/2013JC009246 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
119 |
container_issue |
1 |
container_start_page |
359 |
op_container_end_page |
376 |
_version_ |
1766204132677386240 |