Influence of the East Asian Winter Monsoon Variability on the Surface Cyclogenesis over the East China Sea in Late Winter

Abstract. The response of the East Asian winter monsoon variability to orbital forcing is still unclear, and hypotheses are controversial. We present a 150 000 yr record of sea surface temperature difference (ΔSST) between the South China Sea and other Western Pacific Warm Pool regions as a proxy for the intensity of the Asian winter monsoon, because the winter cooling of the South China Sea is caused by the cooling of surface water at the northern margin and the southward advection of cooled water due to winter monsoon winds. The ΔSST showed dominant precession cycles during the past 150 000 yr. The ΔSST varies at precessional band and supports the hypothesis that monsoon is regulated by insolation changes at low-latitudes (Kutzbach, 1981), but contradicts previous suggestions based on marine and loess records that eccentricity controls variability on glacial–interglacial timescales. Maximum winter monsoon intensity corresponds to the May perihelion at precessional band, which is not fully consistent with the Kutzbach model of maximum winter monsoon at the June perihelion. Variation in the East Asian winter monsoon was anti-phased with the Indian summer monsoon, suggesting a linkage of dynamics between these two monsoon systems on an orbital timescale.

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Quantitative reconstruction of the East Asian Winter Monsoon evolution over the past 100 years: Evidence from high-resolution sedimentary records of the inner continental shelf of the East China Sea

The Holocene ◽

10.1177/0959683620908661 ◽

2020 ◽

Vol 30 (7) ◽

pp. 1053-1062

Author(s):

Xilin Zhang ◽

Dejiang Fan ◽

Yuan Tian ◽

Zhilei Sun ◽

Bin Zhai ◽

...

Keyword(s):

High Resolution ◽

East China Sea ◽

East Asian ◽

East China ◽

The East China Sea ◽

China Sea ◽

Asian Winter Monsoon ◽

Sedimentary Records ◽

The Past ◽

Inner Continental Shelf

The East Asian Monsoon (EAM) is a regional factor affecting the East Asian climate and the oceanographic processes of the marginal seas along the Western Pacific. Finding proxies for the EAM intensity and reconstructing the interannual and interdecadal variations of the EAM using high-resolution records are necessary to improve our understanding of the EAM’s role in the global climate system and for predicting climate change. In this paper, high-resolution sedimentary records of sedimentary core C0702 obtained from the inner continental shelf of the East China Sea were comprehensively analyzed using a laser particle size analyzer, an ItraxTM core scanner, and a 210Pb and 137Cs radionuclide analyzer to explore potential proxies for the East Asian Winter Monsoon (EAWM). By combining the obtained results with instrumental observations of the EAM, we established a quantitative formula for the EAWM, which enables to reconstruct the evolution trend of the EAWM during the past 130 years. The sensitive grain-size component F2, with a grain-size range of 14.35–230 µm, and principal component PC1 of the sedimentary deposits of the East China Sea inner shelf can be used as EAWM proxies. The evolution of EAWM in 1880–1950 could be roughly divided into two stages: a weak EAWM period from 1882 to 1900 and a strong EAWM period from 1900 to 1945. This study improves our understanding of the variations in the EAWM on interannual and interdecadal temporal scales.

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Sources of polycyclic aromatic hydrocarbons in PM2.5 over the East China Sea, a downwind domain of East Asian continental outflow

Atmospheric Environment ◽

10.1016/j.atmosenv.2014.05.003 ◽

2014 ◽

Vol 92 ◽

pp. 484-492 ◽

Cited By ~ 47

Author(s):

Fengwen Wang ◽

Tian Lin ◽

Yuanyuan Li ◽

Tianyi Ji ◽

Chuanliang Ma ◽

...

Keyword(s):

Polycyclic Aromatic Hydrocarbons ◽

East China Sea ◽

Aromatic Hydrocarbons ◽

East Asian ◽

East China ◽

The East China Sea ◽

China Sea ◽

Polycyclic Aromatic ◽

Continental Outflow

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The East Asian winter monsoon variability in response to precession and inter-hemispheric heat balance

Climate of the Past Discussions ◽

10.5194/cpd-9-4229-2013 ◽

2013 ◽

Vol 9 (4) ◽

pp. 4229-4261

Author(s):

M. Yamamoto ◽

H. Sai ◽

M.-T. Chen ◽

M. Zhao

Keyword(s):

Northern Hemisphere ◽

Summer Monsoon ◽

Heat Balance ◽

East Asian Winter Monsoon ◽

East Asian ◽

Winter Monsoon ◽

Asian Winter Monsoon ◽

Ice Volume ◽

Monsoon Variability ◽

Winter Insolation

Abstract. The response of Asian monsoon variability to orbital forcing is still unclear, and all hypotheses are controversial. We present a record of the sea surface temperature difference (ΔSST) between the South China Sea and the other Western Pacific Warm Pool regions as a proxy for the intensity of the Asian winter monsoon, because the winter cooling of the South China Sea is caused by the cooling of surface water at the northern margin and the southward advection of cooled water due to winter monsoon winds. The ΔSST showed significant precession cycles during the last 150 kyr. In the precession cycle, the maximum winter monsoon intensity shown by the ΔSST corresponded to the May perihelion and was delayed behind the maximum ice volume. The East Asian winter monsoon was anti-phase with the Indian summer monsoon and the summer monsoon precipitation in central Japan. The timing of the maximum phase of the East Asian winter monsoon was different from previous results in terms of the March perihelion (ice volume maxima) and June perihelion (minimum of Northern Hemisphere winter insolation). We infer that the variation of the East Asian winter monsoon was caused by a physical mechanism of inter-hemispheric heat balance. The East Asian winter monsoon was intensified by the Northern Hemisphere cooling, which was caused by the combined effect of cooling by the ice volume forcing and the decrease in winter insolation, or by decreased heat transfer from the Southern Hemisphere to the Northern Hemisphere owing to the weak Indian summer monsoon at the May perihelion.

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