Robust warming over East Asia during the boreal winter monsoon and its possible causes
An analysis of the interannual variability of surface air temperature during the boreal winter in the East Asian (EA) region from 1960 to 2009 reveals that the East Asian winter monsoon (EAWM) significantly weakens after the mid-1980s. The robust warming over the EA region in the lower and middle tr...
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ftdoajarticles:oai:doaj.org/article:3c8618b96cdf48af98a9f6ae2f96e94b 2023-09-05T13:11:36+02:00 Robust warming over East Asia during the boreal winter monsoon and its possible causes Sun-Seon Lee Seon-Hwa Kim Jong-Ghap Jhun Kyung-Ja Ha Ye-Won Seo 2013-01-01T00:00:00Z https://doi.org/10.1088/1748-9326/8/3/034001 https://doaj.org/article/3c8618b96cdf48af98a9f6ae2f96e94b EN eng IOP Publishing https://doi.org/10.1088/1748-9326/8/3/034001 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/8/3/034001 1748-9326 https://doaj.org/article/3c8618b96cdf48af98a9f6ae2f96e94b Environmental Research Letters, Vol 8, Iss 3, p 034001 (2013) East Asian winter monsoon interdecadal variability Siberian high Aleutian low NPO-like SLP pattern Arctic oscillation Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 article 2013 ftdoajarticles https://doi.org/10.1088/1748-9326/8/3/034001 2023-08-13T00:37:40Z An analysis of the interannual variability of surface air temperature during the boreal winter in the East Asian (EA) region from 1960 to 2009 reveals that the East Asian winter monsoon (EAWM) significantly weakens after the mid-1980s. The robust warming over the EA region in the lower and middle troposphere as well as at the surface is caused mainly by changes in circulations over the North Pacific and Eurasian continent. The 300 hPa East Asian jet and 500 hPa trough over the EA region, which are closely linked to cold surges, significantly weaken after the mid-1980s. The weakened northerly wind in the Siberian high region and north of the EA region interfere with cold advection toward the EA region. The anomalous southeasterlies over the East China Sea due to an enhanced North Pacific oscillation (NPO)-like sea level pressure (SLP) pattern lead to anomalous warm advection over the EA region. It is also found that the advection of mean temperature by anomalous wind and the advection of anomalous temperature by mean wind mainly contribute to the anomalous warm advection in the EA region after the mid-1980s. Consequently, these anomalous circulations provide a more favorable environment for weakening of the EAWM. Article in Journal/Newspaper aleutian low Arctic Directory of Open Access Journals: DOAJ Articles Arctic Pacific Environmental Research Letters 8 3 034001 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
East Asian winter monsoon interdecadal variability Siberian high Aleutian low NPO-like SLP pattern Arctic oscillation Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
spellingShingle |
East Asian winter monsoon interdecadal variability Siberian high Aleutian low NPO-like SLP pattern Arctic oscillation Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 Sun-Seon Lee Seon-Hwa Kim Jong-Ghap Jhun Kyung-Ja Ha Ye-Won Seo Robust warming over East Asia during the boreal winter monsoon and its possible causes |
topic_facet |
East Asian winter monsoon interdecadal variability Siberian high Aleutian low NPO-like SLP pattern Arctic oscillation Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Science Q Physics QC1-999 |
description |
An analysis of the interannual variability of surface air temperature during the boreal winter in the East Asian (EA) region from 1960 to 2009 reveals that the East Asian winter monsoon (EAWM) significantly weakens after the mid-1980s. The robust warming over the EA region in the lower and middle troposphere as well as at the surface is caused mainly by changes in circulations over the North Pacific and Eurasian continent. The 300 hPa East Asian jet and 500 hPa trough over the EA region, which are closely linked to cold surges, significantly weaken after the mid-1980s. The weakened northerly wind in the Siberian high region and north of the EA region interfere with cold advection toward the EA region. The anomalous southeasterlies over the East China Sea due to an enhanced North Pacific oscillation (NPO)-like sea level pressure (SLP) pattern lead to anomalous warm advection over the EA region. It is also found that the advection of mean temperature by anomalous wind and the advection of anomalous temperature by mean wind mainly contribute to the anomalous warm advection in the EA region after the mid-1980s. Consequently, these anomalous circulations provide a more favorable environment for weakening of the EAWM. |
format |
Article in Journal/Newspaper |
author |
Sun-Seon Lee Seon-Hwa Kim Jong-Ghap Jhun Kyung-Ja Ha Ye-Won Seo |
author_facet |
Sun-Seon Lee Seon-Hwa Kim Jong-Ghap Jhun Kyung-Ja Ha Ye-Won Seo |
author_sort |
Sun-Seon Lee |
title |
Robust warming over East Asia during the boreal winter monsoon and its possible causes |
title_short |
Robust warming over East Asia during the boreal winter monsoon and its possible causes |
title_full |
Robust warming over East Asia during the boreal winter monsoon and its possible causes |
title_fullStr |
Robust warming over East Asia during the boreal winter monsoon and its possible causes |
title_full_unstemmed |
Robust warming over East Asia during the boreal winter monsoon and its possible causes |
title_sort |
robust warming over east asia during the boreal winter monsoon and its possible causes |
publisher |
IOP Publishing |
publishDate |
2013 |
url |
https://doi.org/10.1088/1748-9326/8/3/034001 https://doaj.org/article/3c8618b96cdf48af98a9f6ae2f96e94b |
geographic |
Arctic Pacific |
geographic_facet |
Arctic Pacific |
genre |
aleutian low Arctic |
genre_facet |
aleutian low Arctic |
op_source |
Environmental Research Letters, Vol 8, Iss 3, p 034001 (2013) |
op_relation |
https://doi.org/10.1088/1748-9326/8/3/034001 https://doaj.org/toc/1748-9326 doi:10.1088/1748-9326/8/3/034001 1748-9326 https://doaj.org/article/3c8618b96cdf48af98a9f6ae2f96e94b |
op_doi |
https://doi.org/10.1088/1748-9326/8/3/034001 |
container_title |
Environmental Research Letters |
container_volume |
8 |
container_issue |
3 |
container_start_page |
034001 |
_version_ |
1776205313815347200 |