Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions
Results are presented from an eddy-resolving model of the Southern Ocean which suggest that regions of moderate eddy activity are occupied by wavelike eddies with wavelengths of about 300 km and periods of 4 to 12 months. These waves travel eastward where the current (and wave amplitude)is strongest...
Published in: | Journal of Geophysical Research |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
1995
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/19364/ https://nora.nerc.ac.uk/id/eprint/19364/1/1995-Hughes_JGR_Rossby_TP.pdf |
id |
ftnerc:oai:nora.nerc.ac.uk:19364 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:19364 2023-05-15T18:24:41+02:00 Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions Hughes, Christopher 1995-08-15 text http://nora.nerc.ac.uk/id/eprint/19364/ https://nora.nerc.ac.uk/id/eprint/19364/1/1995-Hughes_JGR_Rossby_TP.pdf en eng https://nora.nerc.ac.uk/id/eprint/19364/1/1995-Hughes_JGR_Rossby_TP.pdf Hughes, Christopher orcid:0000-0002-9355-0233 . 1995 Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions. Journal of Geophysical Research, 100 (C8). 15933-15950. https://doi.org/10.1029/95JC01380 <https://doi.org/10.1029/95JC01380> Marine Sciences Publication - Article PeerReviewed 1995 ftnerc https://doi.org/10.1029/95JC01380 2023-02-04T19:32:17Z Results are presented from an eddy-resolving model of the Southern Ocean which suggest that regions of moderate eddy activity are occupied by wavelike eddies with wavelengths of about 300 km and periods of 4 to 12 months. These waves travel eastward where the current (and wave amplitude)is strongest, and westward elsewhere, and it is argued that they are Rossby waves advected by the mean flow. It is shown that TOPEX/POSEIDON altimetry data should be able to resolve these waves in the Pacific sector of the Southern Ocean. A technique for wave detection is then presented which is capable of extracting useful information about the waves in this as well as other regions. Altimeter data are then presented which confirm the existence of waves in the Pacific sector and are consistent with wave presence elsewhere. An analysis of tide model errors shows that such errors are incapable of producing a signal which could mimic the modeled waves, although tide model errors may explain the difference between altimetry and model results in shallow regions of the ocean and in regions of low eddy activity. Article in Journal/Newspaper Southern Ocean Natural Environment Research Council: NERC Open Research Archive Southern Ocean Pacific Journal of Geophysical Research 100 C8 15933 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Marine Sciences |
spellingShingle |
Marine Sciences Hughes, Christopher Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions |
topic_facet |
Marine Sciences |
description |
Results are presented from an eddy-resolving model of the Southern Ocean which suggest that regions of moderate eddy activity are occupied by wavelike eddies with wavelengths of about 300 km and periods of 4 to 12 months. These waves travel eastward where the current (and wave amplitude)is strongest, and westward elsewhere, and it is argued that they are Rossby waves advected by the mean flow. It is shown that TOPEX/POSEIDON altimetry data should be able to resolve these waves in the Pacific sector of the Southern Ocean. A technique for wave detection is then presented which is capable of extracting useful information about the waves in this as well as other regions. Altimeter data are then presented which confirm the existence of waves in the Pacific sector and are consistent with wave presence elsewhere. An analysis of tide model errors shows that such errors are incapable of producing a signal which could mimic the modeled waves, although tide model errors may explain the difference between altimetry and model results in shallow regions of the ocean and in regions of low eddy activity. |
format |
Article in Journal/Newspaper |
author |
Hughes, Christopher |
author_facet |
Hughes, Christopher |
author_sort |
Hughes, Christopher |
title |
Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions |
title_short |
Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions |
title_full |
Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions |
title_fullStr |
Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions |
title_full_unstemmed |
Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions |
title_sort |
rossby waves in the southern ocean: a comparison of topex/poseidon altimetry with model predictions |
publishDate |
1995 |
url |
http://nora.nerc.ac.uk/id/eprint/19364/ https://nora.nerc.ac.uk/id/eprint/19364/1/1995-Hughes_JGR_Rossby_TP.pdf |
geographic |
Southern Ocean Pacific |
geographic_facet |
Southern Ocean Pacific |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
https://nora.nerc.ac.uk/id/eprint/19364/1/1995-Hughes_JGR_Rossby_TP.pdf Hughes, Christopher orcid:0000-0002-9355-0233 . 1995 Rossby Waves in the Southern Ocean: A comparison of TOPEX/POSEIDON altimetry with model predictions. Journal of Geophysical Research, 100 (C8). 15933-15950. https://doi.org/10.1029/95JC01380 <https://doi.org/10.1029/95JC01380> |
op_doi |
https://doi.org/10.1029/95JC01380 |
container_title |
Journal of Geophysical Research |
container_volume |
100 |
container_issue |
C8 |
container_start_page |
15933 |
_version_ |
1766205488185212928 |