The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter
Accompanying global warming, Antarctic sea-ice extent shows a somewhat increasing trend from 1979 to 2014, followed by an abrupt decrease after 2016. Our previous study examined the change of Antarctic sea-ice extent in austral summer, autumn and spring. In this study, we turn our attention to the a...
Published in: | Polar Research |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Norwegian Polar Institute
2024
|
Subjects: | |
Online Access: | https://polarresearch.net/index.php/polar/article/view/9080 https://doi.org/10.33265/polar.v43.9080 |
id |
ftjpolarres:oai:journals.openacademia.net:article/9080 |
---|---|
record_format |
openpolar |
spelling |
ftjpolarres:oai:journals.openacademia.net:article/9080 2024-09-15T17:40:13+00:00 The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter Yu, Lejiang Sui, Cuijuan Dai, Haixia 2024-07-22 text/html application/pdf application/epub+zip text/xml https://polarresearch.net/index.php/polar/article/view/9080 https://doi.org/10.33265/polar.v43.9080 eng eng Norwegian Polar Institute https://polarresearch.net/index.php/polar/article/view/9080/17409 https://polarresearch.net/index.php/polar/article/view/9080/17408 https://polarresearch.net/index.php/polar/article/view/9080/17410 https://polarresearch.net/index.php/polar/article/view/9080/17411 https://polarresearch.net/index.php/polar/article/view/9080 doi:10.33265/polar.v43.9080 Copyright (c) 2024 Lejiang Yu, Cuijuan Sui, Haixia Dai https://creativecommons.org/licenses/by-nc/4.0 Polar Research; Vol. 43 (2024) 1751-8369 Sea-surface temperature the Atlantic Multidecadal Oscillation Southern Annular Mode zonal wavenumber three info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2024 ftjpolarres https://doi.org/10.33265/polar.v43.9080 2024-07-25T23:31:21Z Accompanying global warming, Antarctic sea-ice extent shows a somewhat increasing trend from 1979 to 2014, followed by an abrupt decrease after 2016. Our previous study examined the change of Antarctic sea-ice extent in austral summer, autumn and spring. In this study, we turn our attention to the austral winter, relating the main modes of sea-ice variability to sea-ice extent in the Pacific, Atlantic and Indian sectors of the Southern Ocean. We find that the modes with the strongest correlation with the sea-ice extent are the third, first and first modes in the Pacific, Atlantic and Indian sectors, respectively. Atmospheric circulation anomalies of zonal wavenumber three over the Southern Ocean, related to planetary wave trains induced by the SST anomalies over the south-western Pacific and the southern Indian oceans, can explain sea-ice concentration anomalies of the third mode in the Pacific sector through thermodynamic and dynamic processes. Sea-ice anomalies of the first modes in the Atlantic and Indian sectors result from atmospheric circulation anomalies of a positive and negative phases of the Southern Annular Mode, respectively. The anomalous Southern Annular Mode is also associated with wave trains over the Southern Ocean excited by SST anomalies over the southern Indian Ocean and the south-western Pacific Ocean. The relationship between SST anomalies and Antarctic sea-ice anomalies can provide a reference for the prediction of Antarctic sea-ice anomalies in austral winter on interannual and decadal timescales. Article in Journal/Newspaper Antarc* Antarctic Polar Research Sea ice Southern Ocean Polar Research Polar Research 43 |
institution |
Open Polar |
collection |
Polar Research |
op_collection_id |
ftjpolarres |
language |
English |
topic |
Sea-surface temperature the Atlantic Multidecadal Oscillation Southern Annular Mode zonal wavenumber three |
spellingShingle |
Sea-surface temperature the Atlantic Multidecadal Oscillation Southern Annular Mode zonal wavenumber three Yu, Lejiang Sui, Cuijuan Dai, Haixia The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter |
topic_facet |
Sea-surface temperature the Atlantic Multidecadal Oscillation Southern Annular Mode zonal wavenumber three |
description |
Accompanying global warming, Antarctic sea-ice extent shows a somewhat increasing trend from 1979 to 2014, followed by an abrupt decrease after 2016. Our previous study examined the change of Antarctic sea-ice extent in austral summer, autumn and spring. In this study, we turn our attention to the austral winter, relating the main modes of sea-ice variability to sea-ice extent in the Pacific, Atlantic and Indian sectors of the Southern Ocean. We find that the modes with the strongest correlation with the sea-ice extent are the third, first and first modes in the Pacific, Atlantic and Indian sectors, respectively. Atmospheric circulation anomalies of zonal wavenumber three over the Southern Ocean, related to planetary wave trains induced by the SST anomalies over the south-western Pacific and the southern Indian oceans, can explain sea-ice concentration anomalies of the third mode in the Pacific sector through thermodynamic and dynamic processes. Sea-ice anomalies of the first modes in the Atlantic and Indian sectors result from atmospheric circulation anomalies of a positive and negative phases of the Southern Annular Mode, respectively. The anomalous Southern Annular Mode is also associated with wave trains over the Southern Ocean excited by SST anomalies over the southern Indian Ocean and the south-western Pacific Ocean. The relationship between SST anomalies and Antarctic sea-ice anomalies can provide a reference for the prediction of Antarctic sea-ice anomalies in austral winter on interannual and decadal timescales. |
format |
Article in Journal/Newspaper |
author |
Yu, Lejiang Sui, Cuijuan Dai, Haixia |
author_facet |
Yu, Lejiang Sui, Cuijuan Dai, Haixia |
author_sort |
Yu, Lejiang |
title |
The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter |
title_short |
The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter |
title_full |
The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter |
title_fullStr |
The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter |
title_full_unstemmed |
The relationship between Antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter |
title_sort |
relationship between antarctic sea-ice extent change and the main modes of sea-ice variability in austral winter |
publisher |
Norwegian Polar Institute |
publishDate |
2024 |
url |
https://polarresearch.net/index.php/polar/article/view/9080 https://doi.org/10.33265/polar.v43.9080 |
genre |
Antarc* Antarctic Polar Research Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Polar Research Sea ice Southern Ocean |
op_source |
Polar Research; Vol. 43 (2024) 1751-8369 |
op_relation |
https://polarresearch.net/index.php/polar/article/view/9080/17409 https://polarresearch.net/index.php/polar/article/view/9080/17408 https://polarresearch.net/index.php/polar/article/view/9080/17410 https://polarresearch.net/index.php/polar/article/view/9080/17411 https://polarresearch.net/index.php/polar/article/view/9080 doi:10.33265/polar.v43.9080 |
op_rights |
Copyright (c) 2024 Lejiang Yu, Cuijuan Sui, Haixia Dai https://creativecommons.org/licenses/by-nc/4.0 |
op_doi |
https://doi.org/10.33265/polar.v43.9080 |
container_title |
Polar Research |
container_volume |
43 |
_version_ |
1810485690788478976 |