Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism
The influence of the Madden-Julian oscillation (MJO) on Antarctic sea ice extent has not been extensively explored. This study investigates intraseasonal variability of the sea ice extent induced by the MJO and its physical mechanism. During austral winter, the sea ice extent anomaly exhibits consid...
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ftpubmed:oai:pubmedcentral.nih.gov:6656727 2023-05-15T13:31:34+02:00 Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism Lee, Hyun-Ju Seo, Kyong-Hwan 2019-07-24 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6656727/ http://www.ncbi.nlm.nih.gov/pubmed/31341253 https://doi.org/10.1038/s41598-019-47150-3 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6656727/ http://www.ncbi.nlm.nih.gov/pubmed/31341253 http://dx.doi.org/10.1038/s41598-019-47150-3 © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2019 ftpubmed https://doi.org/10.1038/s41598-019-47150-3 2019-08-04T01:02:03Z The influence of the Madden-Julian oscillation (MJO) on Antarctic sea ice extent has not been extensively explored. This study investigates intraseasonal variability of the sea ice extent induced by the MJO and its physical mechanism. During austral winter, the sea ice extent anomaly exhibits considerable melting and freezing as the MJO evolves. Numerical experiments and the Rossby wave theory show that the high-latitude circulation anomalies in response to the MJO are responsible for the sea ice change. The MJO-induced Rossby waves propagate into the Southern Hemisphere through the northerly ducts over the western Indian Ocean–central Africa and the Maritime Continent. The MJO-induced circulation anomalies reach high latitudes and lead to anomalous meridional temperature advection, causing changes in the sea ice extent. The time difference between the meridional wind and sea ice anomalies is ~5 days. As the MJO moves, the sea ice extent anomaly also exhibits eastward-migrating behavior. Strong sea ice melting in the total anomaly is synchronous to the evolution of the MJO, suggesting the practical usefulness of the location of the MJO for the prediction of the sea ice decrease. Text Antarc* Antarctic Sea ice PubMed Central (PMC) Antarctic Austral Indian Scientific Reports 9 1 |
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Article Lee, Hyun-Ju Seo, Kyong-Hwan Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism |
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description |
The influence of the Madden-Julian oscillation (MJO) on Antarctic sea ice extent has not been extensively explored. This study investigates intraseasonal variability of the sea ice extent induced by the MJO and its physical mechanism. During austral winter, the sea ice extent anomaly exhibits considerable melting and freezing as the MJO evolves. Numerical experiments and the Rossby wave theory show that the high-latitude circulation anomalies in response to the MJO are responsible for the sea ice change. The MJO-induced Rossby waves propagate into the Southern Hemisphere through the northerly ducts over the western Indian Ocean–central Africa and the Maritime Continent. The MJO-induced circulation anomalies reach high latitudes and lead to anomalous meridional temperature advection, causing changes in the sea ice extent. The time difference between the meridional wind and sea ice anomalies is ~5 days. As the MJO moves, the sea ice extent anomaly also exhibits eastward-migrating behavior. Strong sea ice melting in the total anomaly is synchronous to the evolution of the MJO, suggesting the practical usefulness of the location of the MJO for the prediction of the sea ice decrease. |
format |
Text |
author |
Lee, Hyun-Ju Seo, Kyong-Hwan |
author_facet |
Lee, Hyun-Ju Seo, Kyong-Hwan |
author_sort |
Lee, Hyun-Ju |
title |
Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism |
title_short |
Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism |
title_full |
Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism |
title_fullStr |
Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism |
title_full_unstemmed |
Impact of the Madden-Julian oscillation on Antarctic sea ice and its dynamical mechanism |
title_sort |
impact of the madden-julian oscillation on antarctic sea ice and its dynamical mechanism |
publisher |
Nature Publishing Group UK |
publishDate |
2019 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6656727/ http://www.ncbi.nlm.nih.gov/pubmed/31341253 https://doi.org/10.1038/s41598-019-47150-3 |
geographic |
Antarctic Austral Indian |
geographic_facet |
Antarctic Austral Indian |
genre |
Antarc* Antarctic Sea ice |
genre_facet |
Antarc* Antarctic Sea ice |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6656727/ http://www.ncbi.nlm.nih.gov/pubmed/31341253 http://dx.doi.org/10.1038/s41598-019-47150-3 |
op_rights |
© The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-019-47150-3 |
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Scientific Reports |
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