Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change
ABSTRACT Winter precipitation in Northwest China experienced an obvious interdecadal increase around 1987. Consistent increase in winter precipitation occurred in Middle Asia. This study investigates associated changes in atmospheric circulation and sea surface temperature ( SST ). Analyses show tha...
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crwiley:10.1002/joc.4047 2024-06-02T08:10:55+00:00 Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change Zhou, Lian‐Tong Wu, Renguang 2014 http://dx.doi.org/10.1002/joc.4047 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.4047 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.4047 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 35, issue 6, page 1172-1179 ISSN 0899-8418 1097-0088 journal-article 2014 crwiley https://doi.org/10.1002/joc.4047 2024-05-06T07:02:58Z ABSTRACT Winter precipitation in Northwest China experienced an obvious interdecadal increase around 1987. Consistent increase in winter precipitation occurred in Middle Asia. This study investigates associated changes in atmospheric circulation and sea surface temperature ( SST ). Analyses show that winter water vapour flux and atmospheric circulation over the North Atlantic Ocean and Eurasia and SST in the North Atlantic Ocean were very different before and after 1987. During 1987–2008, a significant enhancement of tropospheric moisture convergence and ascending motion was observed over Northwest China and Middle Asia. This contributed to the increase of winter precipitation in Northwest China and Middle Asia. The wind difference field before and after 1987 features cyclones over Middle Asia and North Atlantic Ocean and anticyclones over East Asia and southern Europe‐northern Africa, signifying an obvious change in the Eurasian ( EU ) teleconnection pattern over middle latitudes of Eurasia. The results indicate that the Middle Asia and Northwest China were under the influence of enhanced westerlies from the North Atlantic Ocean that strengthened the water vapour transport to Middle Asia and Northwest China after 1987. Moreover, the interdecadal variability in the EU pattern is associated with the SST increase in the North Atlantic Ocean. Thus, the North Atlantic SST change is likely an important reason for the winter precipitation increase in Middle Asia and Northwest China. Article in Journal/Newspaper North Atlantic Wiley Online Library International Journal of Climatology 35 6 1172 1179 |
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Open Polar |
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Wiley Online Library |
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language |
English |
description |
ABSTRACT Winter precipitation in Northwest China experienced an obvious interdecadal increase around 1987. Consistent increase in winter precipitation occurred in Middle Asia. This study investigates associated changes in atmospheric circulation and sea surface temperature ( SST ). Analyses show that winter water vapour flux and atmospheric circulation over the North Atlantic Ocean and Eurasia and SST in the North Atlantic Ocean were very different before and after 1987. During 1987–2008, a significant enhancement of tropospheric moisture convergence and ascending motion was observed over Northwest China and Middle Asia. This contributed to the increase of winter precipitation in Northwest China and Middle Asia. The wind difference field before and after 1987 features cyclones over Middle Asia and North Atlantic Ocean and anticyclones over East Asia and southern Europe‐northern Africa, signifying an obvious change in the Eurasian ( EU ) teleconnection pattern over middle latitudes of Eurasia. The results indicate that the Middle Asia and Northwest China were under the influence of enhanced westerlies from the North Atlantic Ocean that strengthened the water vapour transport to Middle Asia and Northwest China after 1987. Moreover, the interdecadal variability in the EU pattern is associated with the SST increase in the North Atlantic Ocean. Thus, the North Atlantic SST change is likely an important reason for the winter precipitation increase in Middle Asia and Northwest China. |
format |
Article in Journal/Newspaper |
author |
Zhou, Lian‐Tong Wu, Renguang |
spellingShingle |
Zhou, Lian‐Tong Wu, Renguang Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change |
author_facet |
Zhou, Lian‐Tong Wu, Renguang |
author_sort |
Zhou, Lian‐Tong |
title |
Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change |
title_short |
Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change |
title_full |
Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change |
title_fullStr |
Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change |
title_full_unstemmed |
Interdecadal variability of winter precipitation in Northwest China and its association with the North Atlantic SST change |
title_sort |
interdecadal variability of winter precipitation in northwest china and its association with the north atlantic sst change |
publisher |
Wiley |
publishDate |
2014 |
url |
http://dx.doi.org/10.1002/joc.4047 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.4047 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.4047 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
International Journal of Climatology volume 35, issue 6, page 1172-1179 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.4047 |
container_title |
International Journal of Climatology |
container_volume |
35 |
container_issue |
6 |
container_start_page |
1172 |
op_container_end_page |
1179 |
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1800756843353473024 |