On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation.
An area-weighted k-means clustering method based on pattern correlations is proposed and used to explore the relationship between the Siberian High (SH) and Arctic Oscillation (AO) during the winter months (December-January-February) of 1948-2014. Five regimes are identified. Four of these five regi...
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ftdoajarticles:oai:doaj.org/article:ab7669914529418da638f76a14e84279 2023-05-15T14:54:11+02:00 On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation. Wenyu Huang Bin Wang Jonathon S Wright Ruyan Chen 2016-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0158122 https://doaj.org/article/ab7669914529418da638f76a14e84279 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4928963?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0158122 https://doaj.org/article/ab7669914529418da638f76a14e84279 PLoS ONE, Vol 11, Iss 6, p e0158122 (2016) Medicine R Science Q article 2016 ftdoajarticles https://doi.org/10.1371/journal.pone.0158122 2022-12-31T12:03:14Z An area-weighted k-means clustering method based on pattern correlations is proposed and used to explore the relationship between the Siberian High (SH) and Arctic Oscillation (AO) during the winter months (December-January-February) of 1948-2014. Five regimes are identified. Four of these five regimes (comprising 171 of 201 months) show a negative correlation between the SH and AO indices, while the last regime (30 months) shows a positive correlation. The location of the SH shifts southward into China under two of the four negative-correlation regimes (117 months), with pressure variations over the center of activity for the SH opposite to pressure variations over the climatological center of the SH (which is used to define the SH index). Adjusting the SH index to account for these spatial shifts suggests positive rather than negative correlations between major variations in the SH and AO under these regimes. Under one of the two remaining negative-correlation regimes, pressure anomalies are weak over the Arctic Ocean. In total, only one regime comprising 21 of 201 months strictly obeys the negative correlation between the SH and AO reported by previous studies. The climate regime characterized by an intensified SH is associated with a greater frequency of cold surges over northern and southeastern China, and the weakening of the East Asian winter monsoon during the 1980s was accompanied by a sharp reduction in the occurrence of this regime. Article in Journal/Newspaper Arctic Arctic Ocean Directory of Open Access Journals: DOAJ Articles Arctic Arctic Ocean PLOS ONE 11 6 e0158122 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Wenyu Huang Bin Wang Jonathon S Wright Ruyan Chen On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation. |
topic_facet |
Medicine R Science Q |
description |
An area-weighted k-means clustering method based on pattern correlations is proposed and used to explore the relationship between the Siberian High (SH) and Arctic Oscillation (AO) during the winter months (December-January-February) of 1948-2014. Five regimes are identified. Four of these five regimes (comprising 171 of 201 months) show a negative correlation between the SH and AO indices, while the last regime (30 months) shows a positive correlation. The location of the SH shifts southward into China under two of the four negative-correlation regimes (117 months), with pressure variations over the center of activity for the SH opposite to pressure variations over the climatological center of the SH (which is used to define the SH index). Adjusting the SH index to account for these spatial shifts suggests positive rather than negative correlations between major variations in the SH and AO under these regimes. Under one of the two remaining negative-correlation regimes, pressure anomalies are weak over the Arctic Ocean. In total, only one regime comprising 21 of 201 months strictly obeys the negative correlation between the SH and AO reported by previous studies. The climate regime characterized by an intensified SH is associated with a greater frequency of cold surges over northern and southeastern China, and the weakening of the East Asian winter monsoon during the 1980s was accompanied by a sharp reduction in the occurrence of this regime. |
format |
Article in Journal/Newspaper |
author |
Wenyu Huang Bin Wang Jonathon S Wright Ruyan Chen |
author_facet |
Wenyu Huang Bin Wang Jonathon S Wright Ruyan Chen |
author_sort |
Wenyu Huang |
title |
On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation. |
title_short |
On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation. |
title_full |
On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation. |
title_fullStr |
On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation. |
title_full_unstemmed |
On the Non-Stationary Relationship between the Siberian High and Arctic Oscillation. |
title_sort |
on the non-stationary relationship between the siberian high and arctic oscillation. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2016 |
url |
https://doi.org/10.1371/journal.pone.0158122 https://doaj.org/article/ab7669914529418da638f76a14e84279 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Ocean |
op_source |
PLoS ONE, Vol 11, Iss 6, p e0158122 (2016) |
op_relation |
http://europepmc.org/articles/PMC4928963?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0158122 https://doaj.org/article/ab7669914529418da638f76a14e84279 |
op_doi |
https://doi.org/10.1371/journal.pone.0158122 |
container_title |
PLOS ONE |
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11 |
container_issue |
6 |
container_start_page |
e0158122 |
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1766325913928073216 |