Topographic influence on submesoscale dynamics in the Southern Ocean
Topography influences the circulation in the Southern Ocean, generating stationary meanders in the lee of topographic features, triggering hot spots of mesoscale eddy kinetic energy, and modifying jets and fronts. However, the relationship between topography and submesoscale flows (with length scale...
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/102574 2024-01-14T10:10:48+01:00 Topographic influence on submesoscale dynamics in the Southern Ocean Rosso, Isabella Hogg, Andrew Kiss, Andrew E. Gayen, Bishakhdatta http://hdl.handle.net/1885/102574 https://doi.org/10.1002/2014GL062720 https://openresearch-repository.anu.edu.au/bitstream/1885/102574/5/01_Rosso_Topographic_influence_on_2015.pdf.jpg unknown American Geophysical Union 0094-8276 http://hdl.handle.net/1885/102574 doi:10.1002/2014GL062720 https://openresearch-repository.anu.edu.au/bitstream/1885/102574/5/01_Rosso_Topographic_influence_on_2015.pdf.jpg Author/s retain copyright Geophysical Research Letters Keywords: Kinetic energy Kinetics Numerical models Strain rate Topography Velocity Coarser resolution model High resolution Mesoscale Southern ocean Spatial in-homogeneity Topographic features Topography controls Vertical velocity Oceanography high resolution numerical model Journal article ftanucanberra https://doi.org/10.1002/2014GL062720 2023-12-15T09:35:13Z Topography influences the circulation in the Southern Ocean, generating stationary meanders in the lee of topographic features, triggering hot spots of mesoscale eddy kinetic energy, and modifying jets and fronts. However, the relationship between topography and submesoscale flows (with length scales of order 1-10 km) has not yet been explored. The first submesoscale-resolving (1/80 resolution) ocean model, with realistic topography of the Indian sector of the Southern Ocean, is used to investigate this interaction. The results show spatial inhomogeneity in submesoscale activity that is correlated with topography. Topographic influence is primarily indirect: topography controls mesoscale flows, which in turn generate submesoscale activity. Mesoscale eddy kinetic energy and strain rate can be used, to first order, to infer submesoscale vertical velocity, implying a possible route to parameterise submesoscale activity in coarser resolution models. Article in Journal/Newspaper Southern Ocean Australian National University: ANU Digital Collections Southern Ocean Indian Geophysical Research Letters 42 4 1139 1147 |
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Open Polar |
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Australian National University: ANU Digital Collections |
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ftanucanberra |
language |
unknown |
topic |
Keywords: Kinetic energy Kinetics Numerical models Strain rate Topography Velocity Coarser resolution model High resolution Mesoscale Southern ocean Spatial in-homogeneity Topographic features Topography controls Vertical velocity Oceanography high resolution numerical model |
spellingShingle |
Keywords: Kinetic energy Kinetics Numerical models Strain rate Topography Velocity Coarser resolution model High resolution Mesoscale Southern ocean Spatial in-homogeneity Topographic features Topography controls Vertical velocity Oceanography high resolution numerical model Rosso, Isabella Hogg, Andrew Kiss, Andrew E. Gayen, Bishakhdatta Topographic influence on submesoscale dynamics in the Southern Ocean |
topic_facet |
Keywords: Kinetic energy Kinetics Numerical models Strain rate Topography Velocity Coarser resolution model High resolution Mesoscale Southern ocean Spatial in-homogeneity Topographic features Topography controls Vertical velocity Oceanography high resolution numerical model |
description |
Topography influences the circulation in the Southern Ocean, generating stationary meanders in the lee of topographic features, triggering hot spots of mesoscale eddy kinetic energy, and modifying jets and fronts. However, the relationship between topography and submesoscale flows (with length scales of order 1-10 km) has not yet been explored. The first submesoscale-resolving (1/80 resolution) ocean model, with realistic topography of the Indian sector of the Southern Ocean, is used to investigate this interaction. The results show spatial inhomogeneity in submesoscale activity that is correlated with topography. Topographic influence is primarily indirect: topography controls mesoscale flows, which in turn generate submesoscale activity. Mesoscale eddy kinetic energy and strain rate can be used, to first order, to infer submesoscale vertical velocity, implying a possible route to parameterise submesoscale activity in coarser resolution models. |
format |
Article in Journal/Newspaper |
author |
Rosso, Isabella Hogg, Andrew Kiss, Andrew E. Gayen, Bishakhdatta |
author_facet |
Rosso, Isabella Hogg, Andrew Kiss, Andrew E. Gayen, Bishakhdatta |
author_sort |
Rosso, Isabella |
title |
Topographic influence on submesoscale dynamics in the Southern Ocean |
title_short |
Topographic influence on submesoscale dynamics in the Southern Ocean |
title_full |
Topographic influence on submesoscale dynamics in the Southern Ocean |
title_fullStr |
Topographic influence on submesoscale dynamics in the Southern Ocean |
title_full_unstemmed |
Topographic influence on submesoscale dynamics in the Southern Ocean |
title_sort |
topographic influence on submesoscale dynamics in the southern ocean |
publisher |
American Geophysical Union |
url |
http://hdl.handle.net/1885/102574 https://doi.org/10.1002/2014GL062720 https://openresearch-repository.anu.edu.au/bitstream/1885/102574/5/01_Rosso_Topographic_influence_on_2015.pdf.jpg |
geographic |
Southern Ocean Indian |
geographic_facet |
Southern Ocean Indian |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Geophysical Research Letters |
op_relation |
0094-8276 http://hdl.handle.net/1885/102574 doi:10.1002/2014GL062720 https://openresearch-repository.anu.edu.au/bitstream/1885/102574/5/01_Rosso_Topographic_influence_on_2015.pdf.jpg |
op_rights |
Author/s retain copyright |
op_doi |
https://doi.org/10.1002/2014GL062720 |
container_title |
Geophysical Research Letters |
container_volume |
42 |
container_issue |
4 |
container_start_page |
1139 |
op_container_end_page |
1147 |
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1788065621555019776 |