Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry
Year‐round variability in the Ross Gyre (RG), Antarctica, during 2011–2015, is derived using radar altimetry. The RG is characterized by a bounded recirculating component and a westward throughflow to the south. Two modes of variability of the sea surface height and ocean surface stress curl are rev...
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ftsouthampton:oai:eprints.soton.ac.uk:421907 2023-08-27T04:03:51+02:00 Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry Dotto, Tiago S. Naveira Garabato, Alberto Bacon, Sheldon Tsamados, Michel Holland, Paul R. Hooley, Jack Frajka-Williams, Eleanor Ridout, Andy Meredith, Michael P. 2018-06-15 text https://eprints.soton.ac.uk/421907/ https://eprints.soton.ac.uk/421907/1/RossGyreAM.pdf https://eprints.soton.ac.uk/421907/2/RossGyre.pdf en English eng https://eprints.soton.ac.uk/421907/1/RossGyreAM.pdf https://eprints.soton.ac.uk/421907/2/RossGyre.pdf Dotto, Tiago S., Naveira Garabato, Alberto, Bacon, Sheldon, Tsamados, Michel, Holland, Paul R., Hooley, Jack, Frajka-Williams, Eleanor, Ridout, Andy and Meredith, Michael P. (2018) Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry. Geophysical Research Letters. (doi:10.1029/2018GL078607 <http://dx.doi.org/10.1029/2018GL078607>). cc_by_4 Article PeerReviewed 2018 ftsouthampton https://doi.org/10.1029/2018GL078607 2023-08-03T22:23:12Z Year‐round variability in the Ross Gyre (RG), Antarctica, during 2011–2015, is derived using radar altimetry. The RG is characterized by a bounded recirculating component and a westward throughflow to the south. Two modes of variability of the sea surface height and ocean surface stress curl are revealed. The first represents a large‐scale sea surface height change forced by the Antarctic Oscillation. The second represents semiannual variability in gyre area and strength, driven by fluctuations in sea level pressure associated with the Amundsen Sea Low. Variability in the throughflow is also linked to the Amundsen Sea Low. An adequate description of the oceanic circulation is achieved only when sea ice drag is accounted for in the ocean surface stress. The drivers of RG variability elucidated here have significant implications for our understanding of the oceanic forcing of Antarctic Ice Sheet melting and for the downstream propagation of its ocean freshening footprint. Article in Journal/Newspaper Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Sea ice Southern Ocean University of Southampton: e-Prints Soton Amundsen Sea Antarctic Curl ENVELOPE(-63.071,-63.071,-70.797,-70.797) Southern Ocean The Antarctic Geophysical Research Letters |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
Year‐round variability in the Ross Gyre (RG), Antarctica, during 2011–2015, is derived using radar altimetry. The RG is characterized by a bounded recirculating component and a westward throughflow to the south. Two modes of variability of the sea surface height and ocean surface stress curl are revealed. The first represents a large‐scale sea surface height change forced by the Antarctic Oscillation. The second represents semiannual variability in gyre area and strength, driven by fluctuations in sea level pressure associated with the Amundsen Sea Low. Variability in the throughflow is also linked to the Amundsen Sea Low. An adequate description of the oceanic circulation is achieved only when sea ice drag is accounted for in the ocean surface stress. The drivers of RG variability elucidated here have significant implications for our understanding of the oceanic forcing of Antarctic Ice Sheet melting and for the downstream propagation of its ocean freshening footprint. |
format |
Article in Journal/Newspaper |
author |
Dotto, Tiago S. Naveira Garabato, Alberto Bacon, Sheldon Tsamados, Michel Holland, Paul R. Hooley, Jack Frajka-Williams, Eleanor Ridout, Andy Meredith, Michael P. |
spellingShingle |
Dotto, Tiago S. Naveira Garabato, Alberto Bacon, Sheldon Tsamados, Michel Holland, Paul R. Hooley, Jack Frajka-Williams, Eleanor Ridout, Andy Meredith, Michael P. Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry |
author_facet |
Dotto, Tiago S. Naveira Garabato, Alberto Bacon, Sheldon Tsamados, Michel Holland, Paul R. Hooley, Jack Frajka-Williams, Eleanor Ridout, Andy Meredith, Michael P. |
author_sort |
Dotto, Tiago S. |
title |
Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry |
title_short |
Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry |
title_full |
Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry |
title_fullStr |
Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry |
title_full_unstemmed |
Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry |
title_sort |
variability of the ross gyre, southern ocean: drivers and responses revealed by satellite altimetry |
publishDate |
2018 |
url |
https://eprints.soton.ac.uk/421907/ https://eprints.soton.ac.uk/421907/1/RossGyreAM.pdf https://eprints.soton.ac.uk/421907/2/RossGyre.pdf |
long_lat |
ENVELOPE(-63.071,-63.071,-70.797,-70.797) |
geographic |
Amundsen Sea Antarctic Curl Southern Ocean The Antarctic |
geographic_facet |
Amundsen Sea Antarctic Curl Southern Ocean The Antarctic |
genre |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Sea ice Southern Ocean |
genre_facet |
Amundsen Sea Antarc* Antarctic Antarctica Ice Sheet Sea ice Southern Ocean |
op_relation |
https://eprints.soton.ac.uk/421907/1/RossGyreAM.pdf https://eprints.soton.ac.uk/421907/2/RossGyre.pdf Dotto, Tiago S., Naveira Garabato, Alberto, Bacon, Sheldon, Tsamados, Michel, Holland, Paul R., Hooley, Jack, Frajka-Williams, Eleanor, Ridout, Andy and Meredith, Michael P. (2018) Variability of the Ross Gyre, Southern Ocean: drivers and responses revealed by satellite altimetry. Geophysical Research Letters. (doi:10.1029/2018GL078607 <http://dx.doi.org/10.1029/2018GL078607>). |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1029/2018GL078607 |
container_title |
Geophysical Research Letters |
_version_ |
1775347170357018624 |