The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ...
AbstractMotivated by recent observations of submesoscales in the Southern Ocean, we use nonlinear numerical simulations and a linear stability analysis to examine the influence of a barotropic jet on submesoscale instabilities at an isolated front. Simulations of the nonhydrostatic Boussinesq equati...
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Online Access: | https://dx.doi.org/10.17863/cam.33985 https://www.repository.cam.ac.uk/handle/1810/286678 |
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ftdatacite:10.17863/cam.33985 2024-02-04T10:04:43+01:00 The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... Stamper, MA Taylor, Fox-Kemper, B 2018 https://dx.doi.org/10.17863/cam.33985 https://www.repository.cam.ac.uk/handle/1810/286678 en eng American Meteorological Society Fronts Instability Nonhydrostatic models Article ScholarlyArticle JournalArticle article-journal 2018 ftdatacite https://doi.org/10.17863/cam.33985 2024-01-05T14:41:11Z AbstractMotivated by recent observations of submesoscales in the Southern Ocean, we use nonlinear numerical simulations and a linear stability analysis to examine the influence of a barotropic jet on submesoscale instabilities at an isolated front. Simulations of the nonhydrostatic Boussinesq equations with a strong barotropic jet (approximately matching the observed conditions) show that submesoscale disturbances and strong vertical velocities are confined to a small region near the initial frontal location. In contrast, without a barotropic jet, submesoscale eddies propagate to the edges of the computational domain and smear the mean frontal structure. Several intermediate jet strengths are also considered. A linear stability analysis reveals that the barotropic jet has a modest influence on the growth rate of linear disturbances to the initial conditions, with at most a ~20% reduction in the growth rate of the most unstable mode. On the other hand, a basic state formed by averaging the flow at the end of ... Article in Journal/Newspaper Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Southern Ocean |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Fronts Instability Nonhydrostatic models |
spellingShingle |
Fronts Instability Nonhydrostatic models Stamper, MA Taylor, Fox-Kemper, B The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... |
topic_facet |
Fronts Instability Nonhydrostatic models |
description |
AbstractMotivated by recent observations of submesoscales in the Southern Ocean, we use nonlinear numerical simulations and a linear stability analysis to examine the influence of a barotropic jet on submesoscale instabilities at an isolated front. Simulations of the nonhydrostatic Boussinesq equations with a strong barotropic jet (approximately matching the observed conditions) show that submesoscale disturbances and strong vertical velocities are confined to a small region near the initial frontal location. In contrast, without a barotropic jet, submesoscale eddies propagate to the edges of the computational domain and smear the mean frontal structure. Several intermediate jet strengths are also considered. A linear stability analysis reveals that the barotropic jet has a modest influence on the growth rate of linear disturbances to the initial conditions, with at most a ~20% reduction in the growth rate of the most unstable mode. On the other hand, a basic state formed by averaging the flow at the end of ... |
format |
Article in Journal/Newspaper |
author |
Stamper, MA Taylor, Fox-Kemper, B |
author_facet |
Stamper, MA Taylor, Fox-Kemper, B |
author_sort |
Stamper, MA |
title |
The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... |
title_short |
The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... |
title_full |
The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... |
title_fullStr |
The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... |
title_full_unstemmed |
The growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... |
title_sort |
growth and saturation of submesoscale instabilities in the presence of a barotropic jet ... |
publisher |
American Meteorological Society |
publishDate |
2018 |
url |
https://dx.doi.org/10.17863/cam.33985 https://www.repository.cam.ac.uk/handle/1810/286678 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_doi |
https://doi.org/10.17863/cam.33985 |
_version_ |
1789973376160235520 |