Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study
In this paper, results of diagnostic analysis for the period 1983–2015, demonstrate a robust relationship between Indian Summer Monsoon Rainfall (ISMR) and sea ice area (SIA) over the two sectors of Antarctica namely, Western Pacific Ocean (WPO) and Bellingshausen and Amundsen Seas (BAS). A signific...
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ftnipr:oai:nipr.repo.nii.ac.jp:00016881 2023-05-15T13:46:39+02:00 Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study 2021-12 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16881 http://id.nii.ac.jp/1291/00016750/ en eng https://doi.org/10.1016/j.polar.2021.100746 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16881 http://id.nii.ac.jp/1291/00016750/ Polar Science, 30, 100746(2021-12) 18739652 Antarctic sea ice WPO and BAS sectors Pacific SST ISMR El Niño Modoki Journal Article 2021 ftnipr https://doi.org/10.1016/j.polar.2021.100746 2023-02-18T20:11:55Z In this paper, results of diagnostic analysis for the period 1983–2015, demonstrate a robust relationship between Indian Summer Monsoon Rainfall (ISMR) and sea ice area (SIA) over the two sectors of Antarctica namely, Western Pacific Ocean (WPO) and Bellingshausen and Amundsen Seas (BAS). A significant direct (inverse) relationship is observed between ISMR and SIA over the WPO (BAS) sector. Further, plausible physical mechanism governing this relationship is proposed. El Niño Modoki exhibit direct (inverse) relation with SIA over BAS (WPO) sector during summer monsoon season, which has prompted investigation of SIA-El Niño Modoki-ISMR connection. The linkage between southern polar sea ice and the Indian summer monsoon has been demonstrated through the Pacific Ocean, wherein above normal SIA over the BAS (WPO) sector is associated with concurrent warm equatorial central (western) Pacific Sea Surface Temperature (SST) anomalies. Associated meridional circulations supplemented by above normal BAS (WPO) SIA extremes is accompanied by an ascending motion over the equatorial central (western) Pacific. In turn, through large-scale zonal circulation, ascending branch of circulation over the central (western) Pacific Ocean contemporaneously impacts ISMR adversely (favourably). Large-scale atmospheric circulation modulated by equatorial Pacific SST signature is suggested as a possible link between Antarctic sea ice and ISMR. Article in Journal/Newspaper Antarc* Antarctic Antarctica Polar Science Polar Science Sea ice National Institute of Polar Research Repository, Japan Antarctic Pacific Indian Polar Science 30 100746 |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
topic |
Antarctic sea ice WPO and BAS sectors Pacific SST ISMR El Niño Modoki |
spellingShingle |
Antarctic sea ice WPO and BAS sectors Pacific SST ISMR El Niño Modoki Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study |
topic_facet |
Antarctic sea ice WPO and BAS sectors Pacific SST ISMR El Niño Modoki |
description |
In this paper, results of diagnostic analysis for the period 1983–2015, demonstrate a robust relationship between Indian Summer Monsoon Rainfall (ISMR) and sea ice area (SIA) over the two sectors of Antarctica namely, Western Pacific Ocean (WPO) and Bellingshausen and Amundsen Seas (BAS). A significant direct (inverse) relationship is observed between ISMR and SIA over the WPO (BAS) sector. Further, plausible physical mechanism governing this relationship is proposed. El Niño Modoki exhibit direct (inverse) relation with SIA over BAS (WPO) sector during summer monsoon season, which has prompted investigation of SIA-El Niño Modoki-ISMR connection. The linkage between southern polar sea ice and the Indian summer monsoon has been demonstrated through the Pacific Ocean, wherein above normal SIA over the BAS (WPO) sector is associated with concurrent warm equatorial central (western) Pacific Sea Surface Temperature (SST) anomalies. Associated meridional circulations supplemented by above normal BAS (WPO) SIA extremes is accompanied by an ascending motion over the equatorial central (western) Pacific. In turn, through large-scale zonal circulation, ascending branch of circulation over the central (western) Pacific Ocean contemporaneously impacts ISMR adversely (favourably). Large-scale atmospheric circulation modulated by equatorial Pacific SST signature is suggested as a possible link between Antarctic sea ice and ISMR. |
format |
Article in Journal/Newspaper |
title |
Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study |
title_short |
Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study |
title_full |
Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study |
title_fullStr |
Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study |
title_full_unstemmed |
Association between Antarctic Sea ice, Pacific SST and the Indian summer monsoon: An observational study |
title_sort |
association between antarctic sea ice, pacific sst and the indian summer monsoon: an observational study |
publishDate |
2021 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16881 http://id.nii.ac.jp/1291/00016750/ |
geographic |
Antarctic Pacific Indian |
geographic_facet |
Antarctic Pacific Indian |
genre |
Antarc* Antarctic Antarctica Polar Science Polar Science Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Polar Science Polar Science Sea ice |
op_relation |
https://doi.org/10.1016/j.polar.2021.100746 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=16881 http://id.nii.ac.jp/1291/00016750/ Polar Science, 30, 100746(2021-12) 18739652 |
op_doi |
https://doi.org/10.1016/j.polar.2021.100746 |
container_title |
Polar Science |
container_volume |
30 |
container_start_page |
100746 |
_version_ |
1766244968961146880 |