Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data
We describe large-scale features of the Antarctic Circumpolar Current (ACC) in the Atlantic part of the Southern Ocean by merging Argo data and data obtained by novel animal-borne CTD sensors. Twenty one of these CTD-Satellite Relay Data Loggers (CTD-SRDLs) were attached to Southern elephant seals (...
Published in: | Journal of Geophysical Research |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2008
|
Subjects: | |
Online Access: | https://risweb.st-andrews.ac.uk/portal/en/researchoutput/antarctic-circumpolar-current-frontal-system-in-the-south-atlantic-monitoring-using-merged-argo-and-animalborne-sensor-data(53cb6c79-ff52-44a9-8470-c72f4d0ad165).html https://doi.org/10.1029/2007JC004647 http://www.scopus.com/inward/record.url?scp=57049104075&partnerID=8YFLogxK |
id |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/53cb6c79-ff52-44a9-8470-c72f4d0ad165 |
---|---|
record_format |
openpolar |
spelling |
ftunstandrewcris:oai:risweb.st-andrews.ac.uk:publications/53cb6c79-ff52-44a9-8470-c72f4d0ad165 2023-05-15T13:53:11+02:00 Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data Boehme, L. Meredith, M. P. Thorpe, S. E. Biuw, Erik Martin Fedak, M. 2008-09-05 https://risweb.st-andrews.ac.uk/portal/en/researchoutput/antarctic-circumpolar-current-frontal-system-in-the-south-atlantic-monitoring-using-merged-argo-and-animalborne-sensor-data(53cb6c79-ff52-44a9-8470-c72f4d0ad165).html https://doi.org/10.1029/2007JC004647 http://www.scopus.com/inward/record.url?scp=57049104075&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Boehme , L , Meredith , M P , Thorpe , S E , Biuw , E M & Fedak , M 2008 , ' Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data ' , Journal of Geophysical Research - Oceans , vol. 113 , no. C9 , pp. C09012 . https://doi.org/10.1029/2007JC004647 DRAKE PASSAGE POLAR FRONT TEMPERATURE DATA OCEAN FRONTS WATER MASSES SEA VARIABILITY CIRCULATION TOPEX/POSEIDON ALTIMETER article 2008 ftunstandrewcris https://doi.org/10.1029/2007JC004647 2022-06-02T07:39:29Z We describe large-scale features of the Antarctic Circumpolar Current (ACC) in the Atlantic part of the Southern Ocean by merging Argo data and data obtained by novel animal-borne CTD sensors. Twenty one of these CTD-Satellite Relay Data Loggers (CTD-SRDLs) were attached to Southern elephant seals (Mirounga leonina) on South Georgia. The merged data yield unified gridded hydrogaphic fields with high temporal and spatial resolution, enabling the determination of features absent in each of the data sets separately. The structure and variability of the frontal field revealed by this data set were compared with those in daily quarter-degree, optimally interpolated sea surface temperature fields and fields of weekly gridded sea level anomaly. In general, the frontal positions derived using our data set are in agreement with previous work, especially where the pathways are constrained by topography, e. g., at the North Scotia Ridge and the South Scotia Ridge. However, with the improved temporal and spacial resolution provided by the CTD-SRDLs, we were able to observe some novel features. All frontal positions are more variable than previously indicated across the Scotia Sea and west of the Mid-Atlantic Ridge on seasonal time scales. The merged data set shows the temporal variability of the Southern ACC Front (SACCF) north of South Georgia and in its position east of the island, where the SACCF lies further north than has been suggested in previous work. In addition, the Subantarctic Front crosses the Mid-Atlantic Ridge about 400 km further north when compared to previous work. Article in Journal/Newspaper Antarc* Antarctic Drake Passage Elephant Seals Mirounga leonina Scotia Sea Southern Elephant Seals Southern Ocean University of St Andrews: Research Portal Antarctic Drake Passage Mid-Atlantic Ridge North Scotia Ridge ENVELOPE(-51.431,-51.431,-53.581,-53.581) Scotia Sea South Scotia Ridge ENVELOPE(-46.500,-46.500,-60.000,-60.000) Southern Ocean The Antarctic Journal of Geophysical Research 113 C9 |
institution |
Open Polar |
collection |
University of St Andrews: Research Portal |
op_collection_id |
ftunstandrewcris |
language |
English |
topic |
DRAKE PASSAGE POLAR FRONT TEMPERATURE DATA OCEAN FRONTS WATER MASSES SEA VARIABILITY CIRCULATION TOPEX/POSEIDON ALTIMETER |
spellingShingle |
DRAKE PASSAGE POLAR FRONT TEMPERATURE DATA OCEAN FRONTS WATER MASSES SEA VARIABILITY CIRCULATION TOPEX/POSEIDON ALTIMETER Boehme, L. Meredith, M. P. Thorpe, S. E. Biuw, Erik Martin Fedak, M. Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data |
topic_facet |
DRAKE PASSAGE POLAR FRONT TEMPERATURE DATA OCEAN FRONTS WATER MASSES SEA VARIABILITY CIRCULATION TOPEX/POSEIDON ALTIMETER |
description |
We describe large-scale features of the Antarctic Circumpolar Current (ACC) in the Atlantic part of the Southern Ocean by merging Argo data and data obtained by novel animal-borne CTD sensors. Twenty one of these CTD-Satellite Relay Data Loggers (CTD-SRDLs) were attached to Southern elephant seals (Mirounga leonina) on South Georgia. The merged data yield unified gridded hydrogaphic fields with high temporal and spatial resolution, enabling the determination of features absent in each of the data sets separately. The structure and variability of the frontal field revealed by this data set were compared with those in daily quarter-degree, optimally interpolated sea surface temperature fields and fields of weekly gridded sea level anomaly. In general, the frontal positions derived using our data set are in agreement with previous work, especially where the pathways are constrained by topography, e. g., at the North Scotia Ridge and the South Scotia Ridge. However, with the improved temporal and spacial resolution provided by the CTD-SRDLs, we were able to observe some novel features. All frontal positions are more variable than previously indicated across the Scotia Sea and west of the Mid-Atlantic Ridge on seasonal time scales. The merged data set shows the temporal variability of the Southern ACC Front (SACCF) north of South Georgia and in its position east of the island, where the SACCF lies further north than has been suggested in previous work. In addition, the Subantarctic Front crosses the Mid-Atlantic Ridge about 400 km further north when compared to previous work. |
format |
Article in Journal/Newspaper |
author |
Boehme, L. Meredith, M. P. Thorpe, S. E. Biuw, Erik Martin Fedak, M. |
author_facet |
Boehme, L. Meredith, M. P. Thorpe, S. E. Biuw, Erik Martin Fedak, M. |
author_sort |
Boehme, L. |
title |
Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data |
title_short |
Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data |
title_full |
Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data |
title_fullStr |
Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data |
title_full_unstemmed |
Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data |
title_sort |
antarctic circumpolar current frontal system in the south atlantic: monitoring using merged argo and animal-borne sensor data |
publishDate |
2008 |
url |
https://risweb.st-andrews.ac.uk/portal/en/researchoutput/antarctic-circumpolar-current-frontal-system-in-the-south-atlantic-monitoring-using-merged-argo-and-animalborne-sensor-data(53cb6c79-ff52-44a9-8470-c72f4d0ad165).html https://doi.org/10.1029/2007JC004647 http://www.scopus.com/inward/record.url?scp=57049104075&partnerID=8YFLogxK |
long_lat |
ENVELOPE(-51.431,-51.431,-53.581,-53.581) ENVELOPE(-46.500,-46.500,-60.000,-60.000) |
geographic |
Antarctic Drake Passage Mid-Atlantic Ridge North Scotia Ridge Scotia Sea South Scotia Ridge Southern Ocean The Antarctic |
geographic_facet |
Antarctic Drake Passage Mid-Atlantic Ridge North Scotia Ridge Scotia Sea South Scotia Ridge Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Drake Passage Elephant Seals Mirounga leonina Scotia Sea Southern Elephant Seals Southern Ocean |
genre_facet |
Antarc* Antarctic Drake Passage Elephant Seals Mirounga leonina Scotia Sea Southern Elephant Seals Southern Ocean |
op_source |
Boehme , L , Meredith , M P , Thorpe , S E , Biuw , E M & Fedak , M 2008 , ' Antarctic Circumpolar Current frontal system in the South Atlantic: Monitoring using merged Argo and animal-borne sensor data ' , Journal of Geophysical Research - Oceans , vol. 113 , no. C9 , pp. C09012 . https://doi.org/10.1029/2007JC004647 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1029/2007JC004647 |
container_title |
Journal of Geophysical Research |
container_volume |
113 |
container_issue |
C9 |
_version_ |
1766258152429322240 |