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:digitalcollections.anu.edu.au:1885/102574 2023-05-15T18:24:21+02:00 Topographic influence on submesoscale dynamics in the Southern Ocean Rosso, Isabella Hogg, Andrew Kiss, Andrew E. Gayen, Bishakhdatta 2016-06-14T23:18:41Z http://hdl.handle.net/1885/102574 unknown American Geophysical Union 0094-8276 http://hdl.handle.net/1885/102574 Geophysical Research Letters Journal article 2016 ftanucanberra 2016-06-20T22:19:27Z 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 Indian Southern Ocean |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
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 |
spellingShingle |
Rosso, Isabella Hogg, Andrew Kiss, Andrew E. Gayen, Bishakhdatta Topographic influence on submesoscale dynamics in the Southern Ocean |
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 |
publishDate |
2016 |
url |
http://hdl.handle.net/1885/102574 |
geographic |
Indian Southern Ocean |
geographic_facet |
Indian Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Geophysical Research Letters |
op_relation |
0094-8276 http://hdl.handle.net/1885/102574 |
_version_ |
1766204787329597440 |