Data from: New perspectives on frontal variability in the southern ocean
The frontal structure of the Southern Ocean is investigated using the Wavelet/Higher Order Statistics Enhancement (WHOSE) frontal detection method, introduced in Chapman (2014). This methodology is applied to 21 years of daily gridded absolute dynamic topography (ADT) data to obtain daily maps of th...
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ftdryad:oai:v1.datadryad.org:10255/dryad.143908 2023-05-15T18:24:16+02:00 Data from: New perspectives on frontal variability in the southern ocean Chapman, Christopher C. Southern Ocean 2017-04-21T19:54:44Z http://hdl.handle.net/10255/dryad.143908 https://doi.org/10.5061/dryad.q9k8r unknown doi:10.5061/dryad.q9k8r/1 doi:10.5061/dryad.q9k8r/2 doi:10.5061/dryad.q9k8r/3 doi:10.5061/dryad.q9k8r/4 doi:10.5061/dryad.q9k8r/5 doi:10.5061/dryad.q9k8r/6 doi:10.5061/dryad.q9k8r/7 doi:10.5061/dryad.q9k8r/8 doi:10.5061/dryad.q9k8r/9 doi:10.5061/dryad.q9k8r/10 doi:10.5061/dryad.q9k8r/11 doi:10.5061/dryad.q9k8r/12 doi:10.5061/dryad.q9k8r/13 doi:10.5061/dryad.q9k8r/14 doi:10.5061/dryad.q9k8r/15 doi:10.5061/dryad.q9k8r/16 doi:10.5061/dryad.q9k8r/17 doi:10.5061/dryad.q9k8r/18 doi:10.5061/dryad.q9k8r/19 doi:10.5061/dryad.q9k8r/20 doi:10.5061/dryad.q9k8r/21 doi:10.5061/dryad.q9k8r/22 doi:10.1175/JPO-D-16-0222.1 doi:10.5061/dryad.q9k8r Chapman CC (2017) New perspectives on frontal variability in the southern ocean. Journal of Physical Oceanography 69: 1. http://hdl.handle.net/10255/dryad.143908 Oceanographic data Article 2017 ftdryad https://doi.org/10.5061/dryad.q9k8r https://doi.org/10.5061/dryad.q9k8r/1 https://doi.org/10.5061/dryad.q9k8r/2 https://doi.org/10.5061/dryad.q9k8r/3 https://doi.org/10.5061/dryad.q9k8r/4 https://doi.org/10.5061/dryad.q9k8r/5 https://doi.org/1 2020-01-01T15:49:51Z The frontal structure of the Southern Ocean is investigated using the Wavelet/Higher Order Statistics Enhancement (WHOSE) frontal detection method, introduced in Chapman (2014). This methodology is applied to 21 years of daily gridded absolute dynamic topography (ADT) data to obtain daily maps of the locations of the fronts. By forming frontal occurrence frequency maps and then approximating these occurrence-maps by a superposition of simple functions, the time-mean locations of the fronts, as well as a measure of their capacity to meander, are obtained and related to the frontal locations found by previous studies. The spatial and temporal variability of the frontal structure is then considered. The number of fronts is found to be highly variable throughout the Southern Ocean, increasing (‘splitting’) downstream of large bathymetric features and decreasing (‘merging’) in regions where the fronts are tightly controlled by the underlying topography. These splitting/merging events are related to changes in the underlying frontal structure whereby regions of high frontal occurrence cross or spread over streamfunction contours. In contrast to the number of fronts, frontal meandering remains relatively constant throughout the Southern Ocean. Little to no migration of the fronts over the 1993-2014 time period is found, and there is only weak sensitivity of frontal positions to atmospheric forcing related to the Southern Annular Mode or the El Niño Southern Oscillation. Finally, the implications of these results for the study of cross-stream tracer transport is discussed. Article in Journal/Newspaper Southern Ocean Dryad Digital Repository (Duke University) Southern Ocean |
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Open Polar |
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Dryad Digital Repository (Duke University) |
op_collection_id |
ftdryad |
language |
unknown |
topic |
Oceanographic data |
spellingShingle |
Oceanographic data Chapman, Christopher C. Data from: New perspectives on frontal variability in the southern ocean |
topic_facet |
Oceanographic data |
description |
The frontal structure of the Southern Ocean is investigated using the Wavelet/Higher Order Statistics Enhancement (WHOSE) frontal detection method, introduced in Chapman (2014). This methodology is applied to 21 years of daily gridded absolute dynamic topography (ADT) data to obtain daily maps of the locations of the fronts. By forming frontal occurrence frequency maps and then approximating these occurrence-maps by a superposition of simple functions, the time-mean locations of the fronts, as well as a measure of their capacity to meander, are obtained and related to the frontal locations found by previous studies. The spatial and temporal variability of the frontal structure is then considered. The number of fronts is found to be highly variable throughout the Southern Ocean, increasing (‘splitting’) downstream of large bathymetric features and decreasing (‘merging’) in regions where the fronts are tightly controlled by the underlying topography. These splitting/merging events are related to changes in the underlying frontal structure whereby regions of high frontal occurrence cross or spread over streamfunction contours. In contrast to the number of fronts, frontal meandering remains relatively constant throughout the Southern Ocean. Little to no migration of the fronts over the 1993-2014 time period is found, and there is only weak sensitivity of frontal positions to atmospheric forcing related to the Southern Annular Mode or the El Niño Southern Oscillation. Finally, the implications of these results for the study of cross-stream tracer transport is discussed. |
format |
Article in Journal/Newspaper |
author |
Chapman, Christopher C. |
author_facet |
Chapman, Christopher C. |
author_sort |
Chapman, Christopher C. |
title |
Data from: New perspectives on frontal variability in the southern ocean |
title_short |
Data from: New perspectives on frontal variability in the southern ocean |
title_full |
Data from: New perspectives on frontal variability in the southern ocean |
title_fullStr |
Data from: New perspectives on frontal variability in the southern ocean |
title_full_unstemmed |
Data from: New perspectives on frontal variability in the southern ocean |
title_sort |
data from: new perspectives on frontal variability in the southern ocean |
publishDate |
2017 |
url |
http://hdl.handle.net/10255/dryad.143908 https://doi.org/10.5061/dryad.q9k8r |
op_coverage |
Southern Ocean |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
doi:10.5061/dryad.q9k8r/1 doi:10.5061/dryad.q9k8r/2 doi:10.5061/dryad.q9k8r/3 doi:10.5061/dryad.q9k8r/4 doi:10.5061/dryad.q9k8r/5 doi:10.5061/dryad.q9k8r/6 doi:10.5061/dryad.q9k8r/7 doi:10.5061/dryad.q9k8r/8 doi:10.5061/dryad.q9k8r/9 doi:10.5061/dryad.q9k8r/10 doi:10.5061/dryad.q9k8r/11 doi:10.5061/dryad.q9k8r/12 doi:10.5061/dryad.q9k8r/13 doi:10.5061/dryad.q9k8r/14 doi:10.5061/dryad.q9k8r/15 doi:10.5061/dryad.q9k8r/16 doi:10.5061/dryad.q9k8r/17 doi:10.5061/dryad.q9k8r/18 doi:10.5061/dryad.q9k8r/19 doi:10.5061/dryad.q9k8r/20 doi:10.5061/dryad.q9k8r/21 doi:10.5061/dryad.q9k8r/22 doi:10.1175/JPO-D-16-0222.1 doi:10.5061/dryad.q9k8r Chapman CC (2017) New perspectives on frontal variability in the southern ocean. Journal of Physical Oceanography 69: 1. http://hdl.handle.net/10255/dryad.143908 |
op_doi |
https://doi.org/10.5061/dryad.q9k8r https://doi.org/10.5061/dryad.q9k8r/1 https://doi.org/10.5061/dryad.q9k8r/2 https://doi.org/10.5061/dryad.q9k8r/3 https://doi.org/10.5061/dryad.q9k8r/4 https://doi.org/10.5061/dryad.q9k8r/5 https://doi.org/1 |
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