Western Pacific hydroclimate linked to global climate variability over the past two millennia
Author
Griffiths, Michael L.Kimbrough, Alena K.
Gagan, Michael K.
Drysdale, Russell N.
Cole, Julia E.
Johnson, Kathleen R.
Zhao, Jian-Xin
Cook, Benjamin I.
Hellstrom, John C.

Hantoro, Wahyoe S.
Affiliation
Univ Arizona, Dept GeosciUniv Arizona, Dept Atmospher Sci
Issue Date
2016-06-08
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NATURE PUBLISHING GROUPCitation
Western Pacific hydroclimate linked to global climate variability over the past two millennia 2016, 7:11719 Nature CommunicationsJournal
Nature CommunicationsRights
Copyright © The Author(s) 2016. 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
Interdecadal modes of tropical Pacific ocean-atmosphere circulation have a strong influence on global temperature, yet the extent to which these phenomena influence global climate on multicentury timescales is still poorly known. Here we present a 2,000-year, multiproxy reconstruction of western Pacific hydroclimate from two speleothem records for southeastern Indonesia. The composite record shows pronounced shifts in monsoon rainfall that are antiphased with precipitation records for East Asia and the central-eastern equatorial Pacific. These meridional and zonal patterns are best explained by a poleward expansion of the Australasian Intertropical Convergence Zone and weakening of the Pacific Walker circulation (PWC) between similar to 1000 and 1500 CE Conversely, an equatorward contraction of the Intertropical Convergence Zone and strengthened PWC occurred between similar to 1500 and 1900 CE. Our findings, together with climate model simulations, highlight the likelihood that century-scale variations in tropical Pacific climate modes can significantly modulate radiatively forced shifts in global temperature.ISSN
2041-1723Version
Final published versionSponsors
Australian Research Council Discovery [DP0663274, DP1095673]; NOAA/UCAR Climate and Global Change Postdoctoral Fellowship; William Paterson University; Lewis and Clark College Mellon Research Initiative Fellowship; US NSFAdditional Links
http://www.nature.com/doifinder/10.1038/ncomms11719ae974a485f413a2113503eed53cd6c53
10.1038/ncomms11719
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Except where otherwise noted, this item's license is described as Copyright © The Author(s) 2016. This work is licensed under a Creative Commons Attribution 4.0 International License.