Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons
Fifty-two Stratospheric sudden warming (SSW) events that occurred from 1957 to 2002 were analyzed based on the 40-year European Centre for Medium-Range Weather Forecasts Reanalysis dataset. Those that could descent to the troposphere were composited to investigate their impacts on the East Asian win...
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ftdoajarticles:oai:doaj.org/article:cd2f890408494a43b7676e150fe02c8e 2024-09-15T17:36:29+00:00 Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons Quanliang Chen Luyang Xu Hongke Cai 2015-01-01T00:00:00Z https://doi.org/10.1155/2015/640912 https://doaj.org/article/cd2f890408494a43b7676e150fe02c8e EN eng Wiley http://dx.doi.org/10.1155/2015/640912 https://doaj.org/toc/1687-9309 https://doaj.org/toc/1687-9317 1687-9309 1687-9317 doi:10.1155/2015/640912 https://doaj.org/article/cd2f890408494a43b7676e150fe02c8e Advances in Meteorology, Vol 2015 (2015) Meteorology. Climatology QC851-999 article 2015 ftdoajarticles https://doi.org/10.1155/2015/640912 2024-08-05T17:48:36Z Fifty-two Stratospheric sudden warming (SSW) events that occurred from 1957 to 2002 were analyzed based on the 40-year European Centre for Medium-Range Weather Forecasts Reanalysis dataset. Those that could descent to the troposphere were composited to investigate their impacts on the East Asian winter monsoon (EAWM). It reveals that when the SSW occurs, the Arctic Oscillation (AO) and the North Pacific Oscillation (NPO) are both in the negative phase and that the tropospheric circulation is quite wave-like. The Siberian high and the Aleutian low are both strengthened, leading to an increased gradient between the Asian continent and the North Pacific. Hence, a strong EAWM is observed with widespread cooling over inland and coastal East Asia. After the peak of the SSW, in contrast, the tropospheric circulation is quite zonally symmetric with negative phases of AO and NPO. The mid-tropospheric East Asian trough deepens and shifts eastward. This configuration facilitates warming over the East Asian inland and cooling over the coastal East Asia centered over Japan. The activities of planetary waves during the lifecycle of the SSW were analyzed. The anomalous propagation and the attendant altered amplitude of the planetary waves can well explain the observed circulation and the EAWM. Article in Journal/Newspaper aleutian low Directory of Open Access Journals: DOAJ Articles Advances in Meteorology 2015 1 10 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Meteorology. Climatology QC851-999 |
spellingShingle |
Meteorology. Climatology QC851-999 Quanliang Chen Luyang Xu Hongke Cai Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons |
topic_facet |
Meteorology. Climatology QC851-999 |
description |
Fifty-two Stratospheric sudden warming (SSW) events that occurred from 1957 to 2002 were analyzed based on the 40-year European Centre for Medium-Range Weather Forecasts Reanalysis dataset. Those that could descent to the troposphere were composited to investigate their impacts on the East Asian winter monsoon (EAWM). It reveals that when the SSW occurs, the Arctic Oscillation (AO) and the North Pacific Oscillation (NPO) are both in the negative phase and that the tropospheric circulation is quite wave-like. The Siberian high and the Aleutian low are both strengthened, leading to an increased gradient between the Asian continent and the North Pacific. Hence, a strong EAWM is observed with widespread cooling over inland and coastal East Asia. After the peak of the SSW, in contrast, the tropospheric circulation is quite zonally symmetric with negative phases of AO and NPO. The mid-tropospheric East Asian trough deepens and shifts eastward. This configuration facilitates warming over the East Asian inland and cooling over the coastal East Asia centered over Japan. The activities of planetary waves during the lifecycle of the SSW were analyzed. The anomalous propagation and the attendant altered amplitude of the planetary waves can well explain the observed circulation and the EAWM. |
format |
Article in Journal/Newspaper |
author |
Quanliang Chen Luyang Xu Hongke Cai |
author_facet |
Quanliang Chen Luyang Xu Hongke Cai |
author_sort |
Quanliang Chen |
title |
Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons |
title_short |
Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons |
title_full |
Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons |
title_fullStr |
Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons |
title_full_unstemmed |
Impact of Stratospheric Sudden Warming on East Asian Winter Monsoons |
title_sort |
impact of stratospheric sudden warming on east asian winter monsoons |
publisher |
Wiley |
publishDate |
2015 |
url |
https://doi.org/10.1155/2015/640912 https://doaj.org/article/cd2f890408494a43b7676e150fe02c8e |
genre |
aleutian low |
genre_facet |
aleutian low |
op_source |
Advances in Meteorology, Vol 2015 (2015) |
op_relation |
http://dx.doi.org/10.1155/2015/640912 https://doaj.org/toc/1687-9309 https://doaj.org/toc/1687-9317 1687-9309 1687-9317 doi:10.1155/2015/640912 https://doaj.org/article/cd2f890408494a43b7676e150fe02c8e |
op_doi |
https://doi.org/10.1155/2015/640912 |
container_title |
Advances in Meteorology |
container_volume |
2015 |
container_start_page |
1 |
op_container_end_page |
10 |
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1810489827742711808 |