Western Pacific hydroclimate linked to global climate variability over the past two millennia

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. and Hantoro, Wahyoe S. (2016) Western Pacific hydroclimate linked to global climate variability over the past two millennia. Nature Communications, 7 . doi:10.1038/ncomms11719


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.
Title Western Pacific hydroclimate linked to global climate variability over the past two millennia
Journal name Nature Communications   Check publisher's open access policy
ISSN 2041-1723
Publication date 2016-06-08
Year available 2016
Sub-type Article (original research)
DOI 10.1038/ncomms11719
Open Access Status DOI
Volume 7
Total pages 9
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Collection year 2017
Language eng
Formatted 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 ~1000 and 1500 CE Conversely, an equatorward contraction of the Intertropical Convergence Zone and strengthened PWC occurred between ~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.
Keyword Western Pacific hydroclimate
Global climate variability
Global temperature
Pacific Walker Circulation (PWC)
El Niño Southern Oscillation (ENSO)
Intertropical convergence zone (ITCZ)
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Earth Sciences Publications
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