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

Zhong, Yi ; Liu, Yuxing ; Du, Xiaojing ; Shi, Xiaoxu ; Xu, Xing ; Lu, Zhengyao LU ; Kaboth-Bahr, Stefanie ; Dekkers, Mark J. ; Larrasoaña, Juan C. and Horikawa, Keiji , et al. (2025) In Global and Planetary Change 245.
Abstract

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... (More)

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.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
East Asian monsoon, Environmental magnetism, Pacific Walker Circulation
in
Global and Planetary Change
volume
245
article number
104676
publisher
Elsevier
external identifiers
  • scopus:85211490528
ISSN
0921-8181
DOI
10.1016/j.gloplacha.2024.104676
language
English
LU publication?
yes
id
5b09431b-ce8d-4f17-b6a4-62c86968395f
date added to LUP
2025-03-03 15:06:34
date last changed
2025-04-04 14:37:59
@article{5b09431b-ce8d-4f17-b6a4-62c86968395f,
  abstract     = {{<p>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.</p>}},
  author       = {{Zhong, Yi and Liu, Yuxing and Du, Xiaojing and Shi, Xiaoxu and Xu, Xing and Lu, Zhengyao and Kaboth-Bahr, Stefanie and Dekkers, Mark J. and Larrasoaña, Juan C. and Horikawa, Keiji and Sun, Chijun and Ning, Liang and Bahr, André and Zhang, Yanan and Zhao, Debo and Liu, Jiabo and Xia, Wenyue and Zhang, Jingyu and Yang, Sheng and Li, Hai and Liang, Xiaoyue and Hong, Chenxi and Dai, Zhengyang and Li, Yuanjie and Liu, Qingsong}},
  issn         = {{0921-8181}},
  keywords     = {{East Asian monsoon; Environmental magnetism; Pacific Walker Circulation}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Global and Planetary Change}},
  title        = {{Pacific Walker Circulation modulated millennial-scale East Asian summer monsoon rainfall variability over the past 40 kyr}},
  url          = {{http://dx.doi.org/10.1016/j.gloplacha.2024.104676}},
  doi          = {{10.1016/j.gloplacha.2024.104676}},
  volume       = {{245}},
  year         = {{2025}},
}