Relationship between NAO and drought disasters in northwestern China in the last millennium
North Atlantic Oscillation (NAO) plays an important role in the Northern Hemisphere climate system. Although there is growing interest in the connection between NAO and precipitation change in China, there are few studies concerning that connection in northwestern China. Based on fine-grained histor...
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Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jaridenv
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Online Access: | https://doi.org/10.1016/j.jaridenv.2011.06.008 http://hdl.handle.net/10722/142559 |
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ftunivhongkonghu:oai:hub.hku.hk:10722/142559 2023-05-15T17:30:22+02:00 Relationship between NAO and drought disasters in northwestern China in the last millennium Lee, HF Zhang, DD 2011 https://doi.org/10.1016/j.jaridenv.2011.06.008 http://hdl.handle.net/10722/142559 eng eng Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jaridenv United Kingdom Journal of Arid Environments Journal of Arid Environments, 2011, v. 75 n. 11, p. 1114-1120 9530263 doi:10.1016/j.jaridenv.2011.06.008 1095-922X 1120 197221 206457 WOS:000294512200019 0140-1963 11 eid_2-s2.0-79960981543 1114 http://hdl.handle.net/10722/142559 75 Article 2011 ftunivhongkonghu https://doi.org/10.1016/j.jaridenv.2011.06.008 2023-01-14T15:40:10Z North Atlantic Oscillation (NAO) plays an important role in the Northern Hemisphere climate system. Although there is growing interest in the connection between NAO and precipitation change in China, there are few studies concerning that connection in northwestern China. Based on fine-grained historical drought disaster records and NAO proxies, we explored quantitatively their possible connection in northwestern China over the past millennium at the multi-decadal to centennial timescales. Statistical results show that NAO and drought disaster were negatively correlated, as positive modes of NAO caused northward-displaced, stronger-than average mid-latitude Westerlies with an enhanced latitudinal water vapor gradient into the central Asian drylands, resulting in reduced drought frequency and intensity in northwestern China. But, their correlation was out-of-phase during the Little Ice Age because of the southward shifting of monsoon, Westerlies, and the East Asian Jet Stream brought by long-term land surface cooling. As it has been indicated that the precipitation in northwestern China is also determined by El Niño-Southern Oscillation and North Atlantic sea surface and air temperature aside from NAO, further studies are needed to evaluate their individual roles and combined impacts upon the drought disaster there. © 2011 Elsevier Ltd. link_to_subscribed_fulltext Article in Journal/Newspaper North Atlantic North Atlantic oscillation University of Hong Kong: HKU Scholars Hub Journal of Arid Environments 75 11 1114 1120 |
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Open Polar |
collection |
University of Hong Kong: HKU Scholars Hub |
op_collection_id |
ftunivhongkonghu |
language |
English |
description |
North Atlantic Oscillation (NAO) plays an important role in the Northern Hemisphere climate system. Although there is growing interest in the connection between NAO and precipitation change in China, there are few studies concerning that connection in northwestern China. Based on fine-grained historical drought disaster records and NAO proxies, we explored quantitatively their possible connection in northwestern China over the past millennium at the multi-decadal to centennial timescales. Statistical results show that NAO and drought disaster were negatively correlated, as positive modes of NAO caused northward-displaced, stronger-than average mid-latitude Westerlies with an enhanced latitudinal water vapor gradient into the central Asian drylands, resulting in reduced drought frequency and intensity in northwestern China. But, their correlation was out-of-phase during the Little Ice Age because of the southward shifting of monsoon, Westerlies, and the East Asian Jet Stream brought by long-term land surface cooling. As it has been indicated that the precipitation in northwestern China is also determined by El Niño-Southern Oscillation and North Atlantic sea surface and air temperature aside from NAO, further studies are needed to evaluate their individual roles and combined impacts upon the drought disaster there. © 2011 Elsevier Ltd. link_to_subscribed_fulltext |
format |
Article in Journal/Newspaper |
author |
Lee, HF Zhang, DD |
spellingShingle |
Lee, HF Zhang, DD Relationship between NAO and drought disasters in northwestern China in the last millennium |
author_facet |
Lee, HF Zhang, DD |
author_sort |
Lee, HF |
title |
Relationship between NAO and drought disasters in northwestern China in the last millennium |
title_short |
Relationship between NAO and drought disasters in northwestern China in the last millennium |
title_full |
Relationship between NAO and drought disasters in northwestern China in the last millennium |
title_fullStr |
Relationship between NAO and drought disasters in northwestern China in the last millennium |
title_full_unstemmed |
Relationship between NAO and drought disasters in northwestern China in the last millennium |
title_sort |
relationship between nao and drought disasters in northwestern china in the last millennium |
publisher |
Academic Press. The Journal's web site is located at http://www.elsevier.com/locate/jaridenv |
publishDate |
2011 |
url |
https://doi.org/10.1016/j.jaridenv.2011.06.008 http://hdl.handle.net/10722/142559 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Journal of Arid Environments Journal of Arid Environments, 2011, v. 75 n. 11, p. 1114-1120 9530263 doi:10.1016/j.jaridenv.2011.06.008 1095-922X 1120 197221 206457 WOS:000294512200019 0140-1963 11 eid_2-s2.0-79960981543 1114 http://hdl.handle.net/10722/142559 75 |
op_doi |
https://doi.org/10.1016/j.jaridenv.2011.06.008 |
container_title |
Journal of Arid Environments |
container_volume |
75 |
container_issue |
11 |
container_start_page |
1114 |
op_container_end_page |
1120 |
_version_ |
1766126739633733632 |