Recent enhancement of central Pacific El Nino variability relative to last eight centuries
Author
Liu, YuCobb, Kim M.
Song, Huiming
Li, Qiang
Li, Ching-Yao
Nakatsuka, Takeshi
An, Zhisheng
Zhou, Weijian
Cai, Qiufang
Li, Jinbao

Leavitt, Steven W.
Sun, Changfeng
Mei, Ruochen
Shen, Chuan-Chou
Chan, Ming-Hsun
Sun, Junyan
Yan, Libin
Lei, Ying
Ma, Yongyong
Li, Xuxiang
Chen, Deliang

Linderholm, Hans W.

Affiliation
Univ Arizona, Tree Ring Res LabIssue Date
2017-05-30
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NATURE PUBLISHING GROUPCitation
Recent enhancement of central Pacific El Nino variability relative to last eight centuries 2017, 8:15386 Nature CommunicationsJournal
Nature CommunicationsRights
This work is licensed under a Creative Commons Attribution 4.0 International License.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
The far-reaching impacts of central Pacific El Nino events on global climate differ appreciably from those associated with eastern Pacific El Nino events. Central Pacific El Nino events may become more frequent in coming decades as atmospheric greenhouse gas concentrations rise, but the instrumental record of central Pacific sea-surface temperatures is too short to detect potential trends. Here we present an annually resolved reconstruction of NINO4 sea-surface temperature, located in the central equatorial Pacific, based on oxygen isotopic time series from Taiwan tree cellulose that span from 1190 AD to 2007 AD. Our reconstruction indicates that relatively warm Nino4 sea-surface temperature values over the late twentieth century are accompanied by higher levels of interannual variability than observed in other intervals of the 818-year-long reconstruction. Our results imply that anthropogenic greenhouse forcing may be driving an increase in central Pacific El Nino-Southern Oscillation variability and/or its hydrological impacts, consistent with recent modelling studies.ISSN
2041-1723PubMed ID
28555638Version
Final published versionSponsors
973 Program [2013CB955900]; Key Project of IEECAS; NOAA C2C2 Award [NA11OAR4310165]; NSF [OCE-1446274, OCE-1446343]; Japanese Society for the Promotion of Science [23242047, 26244049]; National Taiwan University [105R7625]; [QYZDJ-SSW-DQC021]; [NSFC41371221]; [NSFC41630531]; [CASXDA05080202]; [104-2119-M-002-003]Additional Links
http://www.nature.com/doifinder/10.1038/ncomms15386ae974a485f413a2113503eed53cd6c53
10.1038/ncomms15386