A high-resolution monsoon record of millennial-scale oscillations during Late MIS 3 from Wulu Cave, south-west China

Fucai Duan, Dianbing Liu, Hai Cheng, Xianfeng Wang, Yongjin Wang, Xinggong Kong, Shitao Chen

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

A speleothem record from south-western China characterizes in detail the millennial-scale changes in Asian Monsoon (AM) intensity from 39.3 to 28.7 ka. The calcite δ18O profile, with an average resolution of ∼8 years, shows several strong monsoon events concurrent with Greenland Interstadials (GIS) 8-4. To gain a systematic perspective of AM millennial-scale variability, the new and previously reported data from the same cave are combined, showing that AM variation exhibits a broad similarity with Greenland ice δ18O records and with Antarctica but in an opposite sense. For the interval that encompasses GIS 5 and GIS 4.1, however, our stalagmite δ18O record depicts a sustained strong monsoon with no distinctive oscillation between these interstadials. Another prominent characteristic in our record is a gradual transition into Chinese Interstadial (CIS) 8, which is well constrained by an annually laminated sequence. We find that an initial rise in monsoon intensity, lasting a few centuries, significantly precedes the abrupt onset of CIS 8 in the AM realm. This suggests that atmospheric moisture and heat transport are probably capable of inducing abrupt climate change when a rapid reorganization of ocean/atmosphere circulations passes a tipping point.

Original languageEnglish (US)
Pages (from-to)83-90
Number of pages8
JournalJournal of Quaternary Science
Volume29
Issue number1
DOIs
StatePublished - Jan 1 2014

Keywords

  • Asian monsoon
  • Bipolar seesaw
  • MIS 3
  • Millennial-scale climate change
  • Wulu Cave

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