Mechanisms of natural and forced variability in the southern ocean ...
The Southern Ocean is an important regulator of global climate, and accurately predicting its future evolution under climate change constitutes a critical scientific challenge. Mesoscale eddies are key to the dynamics of the Southern Ocean, but the mechanisms and time scales of their natural and for...
Main Author: | |
---|---|
Format: | Text |
Language: | unknown |
Published: |
University of Reading
2023
|
Subjects: | |
Online Access: | https://dx.doi.org/10.48683/1926.00111427 https://centaur.reading.ac.uk/id/eprint/111427 |
id |
ftdatacite:10.48683/1926.00111427 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.48683/1926.00111427 2023-05-15T14:13:47+02:00 Mechanisms of natural and forced variability in the southern ocean ... Roncoroni, Sebastiano 2023 https://dx.doi.org/10.48683/1926.00111427 https://centaur.reading.ac.uk/id/eprint/111427 unknown University of Reading Thesis ScholarlyArticle article-journal Text 2023 ftdatacite https://doi.org/10.48683/1926.00111427 2023-04-03T17:54:36Z The Southern Ocean is an important regulator of global climate, and accurately predicting its future evolution under climate change constitutes a critical scientific challenge. Mesoscale eddies are key to the dynamics of the Southern Ocean, but the mechanisms and time scales of their natural and forced variability are not completely understood. Motivated by the dynamical analogy between the Antarctic Circumpolar Current and the tropospheric jet stream, the natural variability of eddymean flow interaction is studied by adapting a two-dimensional model of storm track variability to the oceanic case. It is found that eddies and the mean flow interact according to a predator-prey oscillatory relationship in both an idealised, eddy-resolving, channel configuration and the SOSE state estimate product of the Southern Ocean. The oscillatory nature of the dynamics reflects in the structure of the phase space diagrams, where quasi-periodic cycles with typical timescales of a few weeks can be observed. The simplified ... Text Antarc* Antarctic Southern Ocean DataCite Metadata Store (German National Library of Science and Technology) Antarctic Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
description |
The Southern Ocean is an important regulator of global climate, and accurately predicting its future evolution under climate change constitutes a critical scientific challenge. Mesoscale eddies are key to the dynamics of the Southern Ocean, but the mechanisms and time scales of their natural and forced variability are not completely understood. Motivated by the dynamical analogy between the Antarctic Circumpolar Current and the tropospheric jet stream, the natural variability of eddymean flow interaction is studied by adapting a two-dimensional model of storm track variability to the oceanic case. It is found that eddies and the mean flow interact according to a predator-prey oscillatory relationship in both an idealised, eddy-resolving, channel configuration and the SOSE state estimate product of the Southern Ocean. The oscillatory nature of the dynamics reflects in the structure of the phase space diagrams, where quasi-periodic cycles with typical timescales of a few weeks can be observed. The simplified ... |
format |
Text |
author |
Roncoroni, Sebastiano |
spellingShingle |
Roncoroni, Sebastiano Mechanisms of natural and forced variability in the southern ocean ... |
author_facet |
Roncoroni, Sebastiano |
author_sort |
Roncoroni, Sebastiano |
title |
Mechanisms of natural and forced variability in the southern ocean ... |
title_short |
Mechanisms of natural and forced variability in the southern ocean ... |
title_full |
Mechanisms of natural and forced variability in the southern ocean ... |
title_fullStr |
Mechanisms of natural and forced variability in the southern ocean ... |
title_full_unstemmed |
Mechanisms of natural and forced variability in the southern ocean ... |
title_sort |
mechanisms of natural and forced variability in the southern ocean ... |
publisher |
University of Reading |
publishDate |
2023 |
url |
https://dx.doi.org/10.48683/1926.00111427 https://centaur.reading.ac.uk/id/eprint/111427 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_doi |
https://doi.org/10.48683/1926.00111427 |
_version_ |
1766286314918903808 |