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Foto Zhengyao Lu

Zhengyao Lu

Researcher

Foto Zhengyao Lu

Pacific Walker Circulation modulated millennial-scale East Asian summer monsoon rainfall variability over the past 40 kyr

Author

  • Yi Zhong
  • Yuxing Liu
  • Xiaojing Du
  • Xiaoxu Shi
  • Xing Xu
  • Zhengyao Lu
  • Stefanie Kaboth-Bahr
  • Mark J. Dekkers
  • Juan C. Larrasoaña
  • Keiji Horikawa
  • Chijun Sun
  • Liang Ning
  • André Bahr
  • Yanan Zhang
  • Debo Zhao
  • Jiabo Liu
  • Wenyue Xia
  • Jingyu Zhang
  • Sheng Yang
  • Hai Li
  • Xiaoyue Liang
  • Chenxi Hong
  • Zhengyang Dai
  • Yuanjie Li
  • Qingsong Liu
Show all

Summary, in English

The millennial-scale hydroclimate variability in East Asia has been debated for a long time due to the lack of reliable precipitation records from southern China and inconsistent model simulations. Here, we reconstruct a 40-kyr rainfall record for southern China and Taiwan based on enviro-magnetic and clay mineral proxy parameters from a northern South China Sea marine sediment core. Both proxies suggest reduced East Asian Summer Monsoon (EASM) precipitation in the southern China-Taiwan region during North Atlantic cooling episodes. After integration with other EASM precipitation records and modeling results, we conclude that the spatial precipitation pattern across Southeast Asia is closely related to the strength of the Pacific Walker Circulation. This interpretation is supported by a model simulation that emphasizes the role of the Walker Circulation in transferring North Atlantic climate variability to the East Asian hydroclimate. Our findings contribute to resolving the disparities between precipitation proxies and model simulations in Southeast Asia.

Department/s

  • Dept of Physical Geography and Ecosystem Science
  • MERGE: ModElling the Regional and Global Earth system
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publishing year

2025-02

Language

English

Publication/Series

Global and Planetary Change

Volume

245

Document type

Journal article

Publisher

Elsevier

Topic

  • Climate Science

Keywords

  • East Asian monsoon
  • Environmental magnetism
  • Pacific Walker Circulation

Status

Published

ISBN/ISSN/Other

  • ISSN: 0921-8181