Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators
The detection of regions in the ocean that are coherent over an extended period of time is a fundamental problem in many oceanic applications. For instance such regions are important for studying the transport of marine species and for the distribution of nutrients. In this study we demonstrate the...
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2009
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ftdoajarticles:oai:doaj.org/article:939d34c6da9b416f9c6e3cb0ffa7b460 2023-05-15T18:25:25+02:00 Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators M. Dellnitz G. Froyland C. Horenkamp K. Padberg-Gehle A. Sen Gupta 2009-12-01T00:00:00Z https://doaj.org/article/939d34c6da9b416f9c6e3cb0ffa7b460 EN eng Copernicus Publications http://www.nonlin-processes-geophys.net/16/655/2009/npg-16-655-2009.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 1023-5809 1607-7946 https://doaj.org/article/939d34c6da9b416f9c6e3cb0ffa7b460 Nonlinear Processes in Geophysics, Vol 16, Iss 6, Pp 655-663 (2009) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2009 ftdoajarticles 2022-12-31T01:10:29Z The detection of regions in the ocean that are coherent over an extended period of time is a fundamental problem in many oceanic applications. For instance such regions are important for studying the transport of marine species and for the distribution of nutrients. In this study we demonstrate the efficacy of transfer operators in detecting and analysing such structures. We focus first on the detection of the Weddell and Ross Gyre for the four seasons spanning December 2003–November 2004 within the 3-D oceanic domain south of 30° S, and show distinct seasonal differences in both the three-dimensional structure and the persistence of the gyres. Further, we demonstrate a new technique based on the discretised transfer operators to calculate the mean residence time of water within parts of the gyres and determine pathways of water leaving and entering the gyres. Article in Journal/Newspaper Southern Ocean Directory of Open Access Journals: DOAJ Articles Southern Ocean Weddell |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 M. Dellnitz G. Froyland C. Horenkamp K. Padberg-Gehle A. Sen Gupta Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The detection of regions in the ocean that are coherent over an extended period of time is a fundamental problem in many oceanic applications. For instance such regions are important for studying the transport of marine species and for the distribution of nutrients. In this study we demonstrate the efficacy of transfer operators in detecting and analysing such structures. We focus first on the detection of the Weddell and Ross Gyre for the four seasons spanning December 2003–November 2004 within the 3-D oceanic domain south of 30° S, and show distinct seasonal differences in both the three-dimensional structure and the persistence of the gyres. Further, we demonstrate a new technique based on the discretised transfer operators to calculate the mean residence time of water within parts of the gyres and determine pathways of water leaving and entering the gyres. |
format |
Article in Journal/Newspaper |
author |
M. Dellnitz G. Froyland C. Horenkamp K. Padberg-Gehle A. Sen Gupta |
author_facet |
M. Dellnitz G. Froyland C. Horenkamp K. Padberg-Gehle A. Sen Gupta |
author_sort |
M. Dellnitz |
title |
Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators |
title_short |
Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators |
title_full |
Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators |
title_fullStr |
Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators |
title_full_unstemmed |
Seasonal variability of the subpolar gyres in the Southern Ocean: a numerical investigation based on transfer operators |
title_sort |
seasonal variability of the subpolar gyres in the southern ocean: a numerical investigation based on transfer operators |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
https://doaj.org/article/939d34c6da9b416f9c6e3cb0ffa7b460 |
geographic |
Southern Ocean Weddell |
geographic_facet |
Southern Ocean Weddell |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Nonlinear Processes in Geophysics, Vol 16, Iss 6, Pp 655-663 (2009) |
op_relation |
http://www.nonlin-processes-geophys.net/16/655/2009/npg-16-655-2009.pdf https://doaj.org/toc/1023-5809 https://doaj.org/toc/1607-7946 1023-5809 1607-7946 https://doaj.org/article/939d34c6da9b416f9c6e3cb0ffa7b460 |
_version_ |
1766206852338548736 |