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Article: Relationship between NAO and drought disasters in northwestern China in the last millennium

TitleRelationship between NAO and drought disasters in northwestern China in the last millennium
Authors
Issue Date2011
PublisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jaridenv
Citation
Journal of Arid Environments, 2011, v. 75 n. 11, p. 1114-1120 How to Cite?
AbstractNorth 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.
Persistent Identifierhttp://hdl.handle.net/10722/142559
ISSN
2015 Impact Factor: 1.623
2015 SCImago Journal Rankings: 0.833
ISI Accession Number ID
Funding AgencyGrant Number
HKU200807176038
10400340
Research Grants Council of The Government of the Hong Kong Special Administrative Region of the People's Republic of ChinaHKU7055/08H
Funding Information:

The research grant generously provided by the HKU Small Project Funding for completion of the project entitled "The Spatio-temporal Dynamics of Natural Disasters in Historical China" (200807176038); HKU Seed Funding for Basic Research for the project entitled "Long-term Climate Change and the Seventeenth-Century General Crisis in Europe" (10400340); and Research Grants Council of The Government of the Hong Kong Special Administrative Region of the People's Republic of China for the project entitled "Climate Change and War-peace Cycles in Eurasia in Recent Human History" (HKU7055/08H) are gratefully acknowledged. We also thank P. Taravov (Institut fur Geologische Wissenschaften, Freie Universitat Berlin, Berlin, Germany) for providing precipitation reconstruction of northeastern Qinghai. Last but not least, a special thanks to Prof. E. R. Vivoni and the referees for their valuable comments on the manuscript.

 

DC FieldValueLanguage
dc.contributor.authorLee, HFen_HK
dc.contributor.authorZhang, DDen_HK
dc.date.accessioned2011-10-28T02:51:29Z-
dc.date.available2011-10-28T02:51:29Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal of Arid Environments, 2011, v. 75 n. 11, p. 1114-1120en_HK
dc.identifier.issn0140-1963en_HK
dc.identifier.urihttp://hdl.handle.net/10722/142559-
dc.description.abstractNorth 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.en_HK
dc.languageengen_US
dc.publisherAcademic Press. The Journal's web site is located at http://www.elsevier.com/locate/jaridenven_HK
dc.relation.ispartofJournal of Arid Environmentsen_HK
dc.titleRelationship between NAO and drought disasters in northwestern China in the last millenniumen_HK
dc.typeArticleen_HK
dc.identifier.emailLee, F: harry.lee@graduate.hku.hken_US
dc.identifier.emailZhang, D: zhangd@hkucc.hku.hken_US
dc.identifier.authorityLee, F=rp00646en_US
dc.identifier.authorityZhang, D=rp00649en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jaridenv.2011.06.008en_HK
dc.identifier.scopuseid_2-s2.0-79960981543en_HK
dc.identifier.hkuros197221en_US
dc.identifier.hkuros206457-
dc.identifier.volume75en_HK
dc.identifier.issue11en_HK
dc.identifier.spage1114en_HK
dc.identifier.epage1120en_HK
dc.identifier.eissn1095-922X-
dc.identifier.isiWOS:000294512200019-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.citeulike9530263-

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