Changes in the Asian monsoon climate during the late last interglacial recorded in oxygen isotopes of a stalagmite from the Yongxing Cave, central China

The East Asian monsoon system is an important part of global atmospheric circulation; however, records of the East Asian monsoon from different regions exhibit different evolutionary rhythms. Here, we show a high-resolution record of grain size and pollen data from a lacustrine sediment core of Dajiuhu Lake in Shennongjia, Hubei Province, China, in order to reconstruct the paleovegetation and paleoeclimate evolution of the Dajiuhu Basin since the late Middle Pleistocene (~237.9 ka to the present). The results show that grain size and pollen record of the core DJH-2 are consistent with the δ18O record of stalagmites from Sanbao Cave in the same area, which is closely related to the changes of insolation at the precessional (~20-kyr) scale in the Northern Hemisphere. This is different from the records of the Asian summer monsoon recorded in the Loess Plateau of North China, which exhibited dominant 100-kyr change cyclicities. We suggest that the difference between paleoclimatic records from North and South China is closely related to the east–west-oriented mountain ranges of the Qinling Mountains in central China that blocked weakened East Asia summer monsoons across the mountains during glacial periods.

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A study on the role of land-atmosphere coupling on the south Asian monsoon climate variability using a regional climate model

Theoretical and Applied Climatology ◽

10.1007/s00704-015-1680-y ◽

2015 ◽

Vol 127 (3-4) ◽

pp. 949-964 ◽

Cited By ~ 9

Author(s):

C. K. Unnikrishnan ◽

M. Rajeevan ◽

S. Vijaya Bhaskara Rao

Keyword(s):

Climate Variability ◽

Regional Climate Model ◽

South Asian ◽

Asian Monsoon ◽

Climate Model ◽

Regional Climate ◽

South Asian Monsoon ◽

Monsoon Climate ◽

The South

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Characteristics of Water Budget Components in Paddy Rice Field under the Asian Monsoon Climate: Application of HSPF-Paddy Model

Water ◽

10.3390/w6072041 ◽

2014 ◽

Vol 6 (7) ◽

pp. 2041-2055 ◽

Cited By ~ 12

Author(s):

Young-Jin Kim ◽

Hae-Do Kim ◽

Ji-Hong Jeon

Keyword(s):

Water Budget ◽

Rice Field ◽

Asian Monsoon ◽

Paddy Rice ◽

Monsoon Climate ◽

Paddy Rice Field

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Combined high- and low-latitude forcing of East Asian monsoon precipitation variability in the Pliocene warm period

Science Advances ◽

10.1126/sciadv.abc2414 ◽

2020 ◽

Vol 6 (46) ◽

pp. eabc2414

Author(s):

Yichao Wang ◽

Huayu Lu ◽

Kexin Wang ◽

Yao Wang ◽

Yongxiang Li ◽

...

Keyword(s):

Asian Monsoon ◽

East Asian Monsoon ◽

East Asian ◽

Central China ◽

Critical Threshold ◽

Monsoon Precipitation ◽

Low Latitude ◽

Monsoon Variability ◽

Precipitation Record ◽

Response To Temperature

East Asian monsoon variability in the Pliocene warm world has not been sufficiently studied because of the lack of direct records. We present a high-resolution precipitation record from Pliocene fluvial-lacustrine sequences in the Weihe Basin, Central China, a region sensitive to the East Asian monsoon. The record shows an abrupt monsoon shift at ~4.2 million years ago, interpreted as the result of high-latitude cooling, with an extratropical temperature decrease across a critical threshold. The precipitation time series exhibits a pronounced ~100–thousand year periodicity and the presence of precession and half-precession cycles, which suggest low-latitude forcing. The synchronous phase but mismatched amplitudes of the East Asian monsoon precipitation proxy and eccentricity suggest a nonlinear but sensitive precipitation response to temperature forcing in the Pliocene warm world. These observations highlight the role of high- and low-latitude forcing of East Asian monsoon variations on tectonic and orbital time scales.

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