Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region
The summertime phytoplankton bloom near the Kerguelen Plateau is in marked contrast to the low-chlorophyll conditions typical of the Southern Ocean and is thought to arise from natural iron fertilisation. The mechanisms of iron supply to the euphotic zone in this region are poorly understood, and nu...
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Format: | Article in Journal/Newspaper |
Language: | English |
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Elsevier Sci Ltd
2014
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Online Access: | https://doi.org/10.1016/j.ocemod.2014.05.001 http://ecite.utas.edu.au/98173 |
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ftunivtasecite:oai:ecite.utas.edu.au:98173 2023-05-15T18:25:29+02:00 Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region Rosso, I Hogg, A McC Strutton, PG Kiss, AE Matear, R Klocker, A van Sebille, E 2014 https://doi.org/10.1016/j.ocemod.2014.05.001 http://ecite.utas.edu.au/98173 en eng Elsevier Sci Ltd http://dx.doi.org/10.1016/j.ocemod.2014.05.001 http://purl.org/au-research/grants/arc/CE1101028 Rosso, I and Hogg, A McC and Strutton, PG and Kiss, AE and Matear, R and Klocker, A and van Sebille, E, Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region, Ocean Modelling, 80 pp. 10-23. ISSN 1463-5003 (2014) [Refereed Article] http://ecite.utas.edu.au/98173 Earth Sciences Oceanography Biological Oceanography Refereed Article PeerReviewed 2014 ftunivtasecite https://doi.org/10.1016/j.ocemod.2014.05.001 2019-12-13T22:00:13Z The summertime phytoplankton bloom near the Kerguelen Plateau is in marked contrast to the low-chlorophyll conditions typical of the Southern Ocean and is thought to arise from natural iron fertilisation. The mechanisms of iron supply to the euphotic zone in this region are poorly understood, and numerical studies of iron transport have until now omitted fine-scale (sub-mesoscale) dynamics which have been shown to significantly increase vertical transport in other parts of the ocean. We present the first sub-mesoscale-resolving study of the flow and vertical transport in this region. The modelled transport and flow structure agree well with observations. We find that an increase in horizontal resolution from mesoscale-resolving (1/20) to 1/80 resolves sub-mesoscale filamentary frontal structures in which vertical velocities are dramatically higher and are consistent with available observations. Lagrangian tracking shows that water is advected to the surface from much greater depth in the sub-mesoscale-resolving experiment, and that vertical exchange is far more rapid and frequent. This study of sub-mesoscale vertical velocities sets the foundation for subsequent investigation of iron transport in this environment. Article in Journal/Newspaper Southern Ocean eCite UTAS (University of Tasmania) Kerguelen Southern Ocean Ocean Modelling 80 10 23 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Biological Oceanography |
spellingShingle |
Earth Sciences Oceanography Biological Oceanography Rosso, I Hogg, A McC Strutton, PG Kiss, AE Matear, R Klocker, A van Sebille, E Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region |
topic_facet |
Earth Sciences Oceanography Biological Oceanography |
description |
The summertime phytoplankton bloom near the Kerguelen Plateau is in marked contrast to the low-chlorophyll conditions typical of the Southern Ocean and is thought to arise from natural iron fertilisation. The mechanisms of iron supply to the euphotic zone in this region are poorly understood, and numerical studies of iron transport have until now omitted fine-scale (sub-mesoscale) dynamics which have been shown to significantly increase vertical transport in other parts of the ocean. We present the first sub-mesoscale-resolving study of the flow and vertical transport in this region. The modelled transport and flow structure agree well with observations. We find that an increase in horizontal resolution from mesoscale-resolving (1/20) to 1/80 resolves sub-mesoscale filamentary frontal structures in which vertical velocities are dramatically higher and are consistent with available observations. Lagrangian tracking shows that water is advected to the surface from much greater depth in the sub-mesoscale-resolving experiment, and that vertical exchange is far more rapid and frequent. This study of sub-mesoscale vertical velocities sets the foundation for subsequent investigation of iron transport in this environment. |
format |
Article in Journal/Newspaper |
author |
Rosso, I Hogg, A McC Strutton, PG Kiss, AE Matear, R Klocker, A van Sebille, E |
author_facet |
Rosso, I Hogg, A McC Strutton, PG Kiss, AE Matear, R Klocker, A van Sebille, E |
author_sort |
Rosso, I |
title |
Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region |
title_short |
Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region |
title_full |
Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region |
title_fullStr |
Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region |
title_full_unstemmed |
Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region |
title_sort |
vertical transport in the ocean due to sub-mesoscale structures: impacts in the kerguelen region |
publisher |
Elsevier Sci Ltd |
publishDate |
2014 |
url |
https://doi.org/10.1016/j.ocemod.2014.05.001 http://ecite.utas.edu.au/98173 |
geographic |
Kerguelen Southern Ocean |
geographic_facet |
Kerguelen Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://dx.doi.org/10.1016/j.ocemod.2014.05.001 http://purl.org/au-research/grants/arc/CE1101028 Rosso, I and Hogg, A McC and Strutton, PG and Kiss, AE and Matear, R and Klocker, A and van Sebille, E, Vertical transport in the ocean due to sub-mesoscale structures: impacts in the Kerguelen region, Ocean Modelling, 80 pp. 10-23. ISSN 1463-5003 (2014) [Refereed Article] http://ecite.utas.edu.au/98173 |
op_doi |
https://doi.org/10.1016/j.ocemod.2014.05.001 |
container_title |
Ocean Modelling |
container_volume |
80 |
container_start_page |
10 |
op_container_end_page |
23 |
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1766206979532914688 |