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Low-high latitude forcing on the East Asian winter monsoon evolution since the last glacial maximum

Published online by Cambridge University Press:  23 September 2024

Debo Zhao*
Affiliation:
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
Shiming Wan
Affiliation:
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China CAS Center for Excellence in Quaternary Science and Global Change, Xi’an, China
Xinquan Zhou
Affiliation:
State Key Laboratory of Marine Geology, Tongji University, Shanghai, China
Shoushu Jiang
Affiliation:
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China College of Marine Sciences, University of Chinese Academy of Sciences, Beijing, China
Anchun Li
Affiliation:
Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
*
Corresponding author: Debo Zhao; Email: zhaodebo@qdio.ac.cn
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Abstract

The East Asian winter monsoon (EAWM) has a profound effect on the winter climate in East Asia. The modern EAWM variability is tightly linked to the high-latitude Northern Hemisphere climate change through the Siberian High and can also be regulated by the low-latitude El Niño-Southern Oscillation through oceanic or atmospheric teleconnections. However, the Quaternary EAWM evolution has long been only attributed to the high-latitude climate change, resulting in the uncertainty in interpreting the out-of-phased EAWM variation recording in the East Asian continent and marginal seas. Here we presented a sediment record at Integrated Ocean Drilling Program Site U1427 in the southern Japan Sea to reconstruct the EAWM evolution since the last glacial maximum. By combining our record with previous reconstructions and simulations, we found the synchronous relationship between winter monsoon in northern and southern regions of East Asia from ∼24 to 8 ka, but anti-correlated relationship since ∼8 ka. We proposed the winter insolation and Atlantic meridional overturning circulation were the main drivers from last glacial to early Holocene, and then ENSO became a dominant factor in controlling the regional heterogeneity of EAWM evolution in the middle and late Holocene. This research explains much of the controversy in the Quaternary EAWM records and highlights the low-high latitude interaction in East Asian winter climate change.

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Original Article
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press
Figure 0

Figure 1. (a) Map showing the location of the IODP Site U1427 (red dots), bathymetry of the Japan Sea and the flow of surface currents (yellow arrow lines). The referenced ocean sites and lake pollen and speleothem records are shown with orange dots and purple squares, respectively. EAWM, EASM and Northern Hemisphere subtropical westerlies are shown with blue, red and purple arrows, respectively. White lines show rivers on the Japanese Islands. Abbreviations of East Asian monsoon, ocean currents and straits are also shown. (b) Monthly rainfall at the Hiraiwa Precipitation Observatory and temperature at Itoigawa (Sone et al.2013) in the Japan Sea side of the Japanese Islands are shown with purple triangles in (a). (c) Mean annual dust flux in the Eurasia and North Pacific (Kok et al.2021). Numbers show the deserts in the northern China, which were divided into three regions: Deserts A, B and C (Chen et al.2007).

Figure 1

Table 1. Radiocarbon dating and correlation points between reflectance b* and NGRIP δ18O

Figure 2

Figure 2. Age model of the top 7.75 m of the Hole A sediments at IODP Site U1427. The layers and their corresponding AMS 14C dates are shown with yellow squares and red diamonds with black error bars, respectively, connected by red dotted lines. The blue dotted lines show the correlations between (a) NGRIP δ18O and (b) sediment reflectance b*.

Figure 3

Figure 3. End-member modelling results of Site U1427 grain-size data. (a) Coefficients of determination (R2) for each size class of models with 1–5 end-members. (b) Angular differences (in degrees) between the reconstructed and observed datasets as a function of the number of end-members. (c) Modelled three end-members of the terrigenous sediment fractions from Site U1427. (d) Variations of end-member abundances of EM1–EM3 during the last ∼24 ka.

Figure 4

Table 2. Sr-Nd isotopic composition of 2–32 μm and 32–63 μm fractions in IODP Site U1427 sediments

Figure 5

Figure 4. Provenance of 2–32 μm and 32–63 μm fractions from Site U1427 sediments based on the Sr-Nd isotopic composition. (a) Comparison with fine-grained end-members of potential source areas. (b) Comparison with coarse-grained end-members of potential source areas. Data sources: Japanese rivers (Goldstein & Jacobsen, 1988; Shen et al.2017), Japanese rocks (Kagami et al.1992), Deserts A, B and C (Chen et al.2007), Gobi Desert (Biscaye et al.1997; Zhao et al.2015), Chinese loess (Chen et al.2007; Zhao et al.2017), Yangtze River (Meng et al.2008; Yang et al.2007; Zhao et al.2017), Yellow River (Hu et al.2012; Meng et al.2008; Zhao et al.2017), Korean river (Lee et al.2008; Lim et al.2015).

Figure 6

Figure 5. Comparison between (a) Japanese sediment input index established with EM1 and EM2 abundances with speleothem δ18O record from the Maboroshi Cave (Kato et al.2021) and winter rainfall record in Lake Biwa (Kigoshi et al.2014), and (b) EAWM (Hao et al.2017; Kang et al.2020; Liu et al.2020; Zhao et al.2019; Zheng et al.2014), (c) Japan Sea SST (Fujine et al.2009; Liu et al.2014a), (d) EASM (Cheng et al.2016) and (e) sea level change (Saito et al.1998). The blue bars show the intervals of YD and H1.

Figure 7

Figure 6. Comparison between EAWM with its potential forcing mechanisms. (a) NGRIP δ18O record (Andersen et al.2004) and winter insolation in 35°N (Laskar et al.2004). (b) EAWM reconstructions and simulation in the northern East Asia and its marginal seas. (c) EAWM reconstructions and simulation in the southern China and South China Sea (Huang et al.2011; Huang et al.2023; Wen et al.2016; Zhao et al.2019). (d) ENSO reconstructions and simulation (Clement et al.2000; Conroy et al.2008; Liu et al.2014b; Moy et al.2002). (e) Regression coefficients of the 850-hPa wind (vectors in m/s) and rainfall anomalies (shadings in mm/day) with respect to the December, January and February (DJF) mean Niño-3.4 index for the midwinter (Geng et al.2023). The EAWM records in the northern and southern regions are shown with dots and squares, respectively. Orange, red and blue boxes show the regions of model simulation. (f) Regression coefficients of the 850-hPa wind (vectors in m/s) and 500-hPa geopotential height anomalies (shadings in m) with respect to the DJF mean Niño-3.4 index for the midwinter (Geng et al.2023).

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