Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice
Abstract This study focused on the interdecadal variability in water vapour content (WVC) over East Asia during winter and its associated mechanisms. The interdecadal variation in the WVC over East Asia during winter was investigated using the empirical orthogonal function (EOF) method. The leading...
Published in: | International Journal of Climatology |
---|---|
Main Authors: | , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
2022
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1002/joc.7779 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7779 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7779 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7779 |
id |
crwiley:10.1002/joc.7779 |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1002/joc.7779 2024-06-02T08:02:40+00:00 Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice He, Wenyue Sun, Bo Ma, Jiehua Wang, Huijun National Natural Science Foundation of China 2022 http://dx.doi.org/10.1002/joc.7779 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7779 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7779 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7779 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 42, issue 16, page 8868-8881 ISSN 0899-8418 1097-0088 journal-article 2022 crwiley https://doi.org/10.1002/joc.7779 2024-05-06T07:04:41Z Abstract This study focused on the interdecadal variability in water vapour content (WVC) over East Asia during winter and its associated mechanisms. The interdecadal variation in the WVC over East Asia during winter was investigated using the empirical orthogonal function (EOF) method. The leading mode (EOF1, explained variance is 52.7%) of interdecadal variability in the WVC, which explains most of the interdecadal variation, exhibits a monopole pattern characterized by consistent WVC anomalies over East Asia. The mechanisms associated with the interdecadal variability in winter WVC over East Asia were further investigated, and it was found that the interdecadal variability in winter WVC over East Asia is modulated by three water vapour transport (WVT) branches from the eastern, western, and southern boundaries of East Asia that are associated with Eurasian winter circulation. Further analyses revealed that increased sea ice concentration over the Barents‐Kara Sea (SIC‐BKS) in October–November (ON) serves as the source of wave activity flux and stimulates a stationary wave train along the Eurasian continent to change the downstream atmospheric circulation. As a response, an abnormal cyclone, an abnormal anticyclone, and an abnormal cyclone are triggered over western Siberia, the northern area of East Asia, and the southern area of East Asia, which are together favourable for WVC sufficiency over East Asia. Sensitivity experiments by the Community Atmosphere Model, version 4 (CAM4) using sea ice forcing in the Barents Sea yield similar results to the observed data, further confirming our conclusion. Therefore, the SIC‐BKS in ON may be an important potential predictor for the interdecadal variability in winter WVC over East Asia. Article in Journal/Newspaper Arctic Barents Sea Kara Sea Sea ice Siberia Wiley Online Library Arctic Barents Sea Kara Sea International Journal of Climatology |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Abstract This study focused on the interdecadal variability in water vapour content (WVC) over East Asia during winter and its associated mechanisms. The interdecadal variation in the WVC over East Asia during winter was investigated using the empirical orthogonal function (EOF) method. The leading mode (EOF1, explained variance is 52.7%) of interdecadal variability in the WVC, which explains most of the interdecadal variation, exhibits a monopole pattern characterized by consistent WVC anomalies over East Asia. The mechanisms associated with the interdecadal variability in winter WVC over East Asia were further investigated, and it was found that the interdecadal variability in winter WVC over East Asia is modulated by three water vapour transport (WVT) branches from the eastern, western, and southern boundaries of East Asia that are associated with Eurasian winter circulation. Further analyses revealed that increased sea ice concentration over the Barents‐Kara Sea (SIC‐BKS) in October–November (ON) serves as the source of wave activity flux and stimulates a stationary wave train along the Eurasian continent to change the downstream atmospheric circulation. As a response, an abnormal cyclone, an abnormal anticyclone, and an abnormal cyclone are triggered over western Siberia, the northern area of East Asia, and the southern area of East Asia, which are together favourable for WVC sufficiency over East Asia. Sensitivity experiments by the Community Atmosphere Model, version 4 (CAM4) using sea ice forcing in the Barents Sea yield similar results to the observed data, further confirming our conclusion. Therefore, the SIC‐BKS in ON may be an important potential predictor for the interdecadal variability in winter WVC over East Asia. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
He, Wenyue Sun, Bo Ma, Jiehua Wang, Huijun |
spellingShingle |
He, Wenyue Sun, Bo Ma, Jiehua Wang, Huijun Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice |
author_facet |
He, Wenyue Sun, Bo Ma, Jiehua Wang, Huijun |
author_sort |
He, Wenyue |
title |
Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice |
title_short |
Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice |
title_full |
Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice |
title_fullStr |
Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice |
title_full_unstemmed |
Interdecadal variation in atmospheric water vapour content over East Asia during winter and the relationship with autumn Arctic sea ice |
title_sort |
interdecadal variation in atmospheric water vapour content over east asia during winter and the relationship with autumn arctic sea ice |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1002/joc.7779 https://onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7779 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/joc.7779 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.7779 |
geographic |
Arctic Barents Sea Kara Sea |
geographic_facet |
Arctic Barents Sea Kara Sea |
genre |
Arctic Barents Sea Kara Sea Sea ice Siberia |
genre_facet |
Arctic Barents Sea Kara Sea Sea ice Siberia |
op_source |
International Journal of Climatology volume 42, issue 16, page 8868-8881 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.7779 |
container_title |
International Journal of Climatology |
_version_ |
1800747146748624896 |