Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia
A particle tracking scheme that uses velocity output from an interannually varying forced run of a global ocean circulation model (Parallel Ocean Climate Model; POCM_4C) allows variability in the transport pathways across the Scotia Sea to South Georgia to be examined for the first time. The time-va...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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2004
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:15906 2023-05-15T14:03:20+02:00 Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia Thorpe, Sally E. Heywood, Karen J. Stevens, David P. Brandon, Mark A. 2004 application/pdf https://ueaeprints.uea.ac.uk/id/eprint/15906/ https://ueaeprints.uea.ac.uk/id/eprint/15906/1/DS_33.pdf https://doi.org/10.1016/j.dsr.2004.02.008 en eng https://ueaeprints.uea.ac.uk/id/eprint/15906/1/DS_33.pdf Thorpe, Sally E., Heywood, Karen J., Stevens, David P. and Brandon, Mark A. (2004) Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia. Deep Sea Research Part I: Oceanographic Research Papers, 51 (7). pp. 909-920. ISSN 1879-0119 doi:10.1016/j.dsr.2004.02.008 Article PeerReviewed 2004 ftuniveastangl https://doi.org/10.1016/j.dsr.2004.02.008 2023-03-23T23:31:22Z A particle tracking scheme that uses velocity output from an interannually varying forced run of a global ocean circulation model (Parallel Ocean Climate Model; POCM_4C) allows variability in the transport pathways across the Scotia Sea to South Georgia to be examined for the first time. The time-variant surface fluxes introduce realistic variability into the model velocity fields. This causes large variations in near-surface, mixed-layer transport from the Antarctic Peninsula region to South Georgia, an island in the southwest Atlantic sector of the Southern Ocean. The variability occurs on a variety of timescales with seasonal and longer periods of variability apparent in the 18 year time series of results. A quasi-four year period of variability is evident across the region in the sea surface temperature fields of POCM_4C and appears in the particle tracking results. This period, noted in other Southern Ocean data sets and ascribed to the Antarctic Circumpolar Wave, has been observed in the reproductive success of higher marine predators breeding on the island. The predicted oceanographic variability is likely to be significant for the South Georgia ecosystem by affecting the influx into the region of Antarctic krill (Euphausia superba), the main prey of the higher predators. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Scotia Sea Southern Ocean University of East Anglia: UEA Digital Repository Antarctic Antarctic Peninsula Scotia Sea Southern Ocean The Antarctic Deep Sea Research Part I: Oceanographic Research Papers 51 7 909 920 |
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Open Polar |
collection |
University of East Anglia: UEA Digital Repository |
op_collection_id |
ftuniveastangl |
language |
English |
description |
A particle tracking scheme that uses velocity output from an interannually varying forced run of a global ocean circulation model (Parallel Ocean Climate Model; POCM_4C) allows variability in the transport pathways across the Scotia Sea to South Georgia to be examined for the first time. The time-variant surface fluxes introduce realistic variability into the model velocity fields. This causes large variations in near-surface, mixed-layer transport from the Antarctic Peninsula region to South Georgia, an island in the southwest Atlantic sector of the Southern Ocean. The variability occurs on a variety of timescales with seasonal and longer periods of variability apparent in the 18 year time series of results. A quasi-four year period of variability is evident across the region in the sea surface temperature fields of POCM_4C and appears in the particle tracking results. This period, noted in other Southern Ocean data sets and ascribed to the Antarctic Circumpolar Wave, has been observed in the reproductive success of higher marine predators breeding on the island. The predicted oceanographic variability is likely to be significant for the South Georgia ecosystem by affecting the influx into the region of Antarctic krill (Euphausia superba), the main prey of the higher predators. |
format |
Article in Journal/Newspaper |
author |
Thorpe, Sally E. Heywood, Karen J. Stevens, David P. Brandon, Mark A. |
spellingShingle |
Thorpe, Sally E. Heywood, Karen J. Stevens, David P. Brandon, Mark A. Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia |
author_facet |
Thorpe, Sally E. Heywood, Karen J. Stevens, David P. Brandon, Mark A. |
author_sort |
Thorpe, Sally E. |
title |
Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia |
title_short |
Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia |
title_full |
Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia |
title_fullStr |
Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia |
title_full_unstemmed |
Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia |
title_sort |
tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to south georgia |
publishDate |
2004 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/15906/ https://ueaeprints.uea.ac.uk/id/eprint/15906/1/DS_33.pdf https://doi.org/10.1016/j.dsr.2004.02.008 |
geographic |
Antarctic Antarctic Peninsula Scotia Sea Southern Ocean The Antarctic |
geographic_facet |
Antarctic Antarctic Peninsula Scotia Sea Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Scotia Sea Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Euphausia superba Scotia Sea Southern Ocean |
op_relation |
https://ueaeprints.uea.ac.uk/id/eprint/15906/1/DS_33.pdf Thorpe, Sally E., Heywood, Karen J., Stevens, David P. and Brandon, Mark A. (2004) Tracking passive drifters in a high resolution ocean model: implications for interannual variability of larval krill transport to South Georgia. Deep Sea Research Part I: Oceanographic Research Papers, 51 (7). pp. 909-920. ISSN 1879-0119 doi:10.1016/j.dsr.2004.02.008 |
op_doi |
https://doi.org/10.1016/j.dsr.2004.02.008 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
51 |
container_issue |
7 |
container_start_page |
909 |
op_container_end_page |
920 |
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1766273959882391552 |