Dust deposition in the Aral Sea: implications for changes in atmospheric circulation in central Asia during the past 2000 years

Huang, Xueyong; Oberhänsli, Hedi; Suchodoletz, Hans von; Sorrel, Philippe

doi:10.1016/j.quascirev.2011.09.011

Cited by 59 publications

(41 citation statements)

References 63 publications

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“…In general, the dust flux was relatively higher before 1300AD than in the LIA. The dust records from the Aral Sea51, Sugan Lake60, Xiaolongwan Maar Lake12, the Yellow Sea Mud Area61 and Chinese historical documents53 show similar trends and are related to the SH and AO indices (Figure 4). In contrast, dust records by Ti concentrations in the Xisha islands showed different patterns over the last 1400 years.…”

Section: Discussionmentioning

confidence: 87%

“…It is widely accepted that the EAWM is linked to Siberian High and Arctic Oscillation4950. Thus, a negative correlation between Ti flux and SH indicate that the relationship between this dust record and the EAWM is different from the other Asian dust records111551(Figure 1). To explain this seemingly counter-intuitive observation, we focus on the recent 110 years with instrumental meteorological and monthly mean zone wind data.…”

Section: Discussionmentioning

confidence: 93%

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A 1400-year terrigenous dust record on a coral island in South China Sea

Liu

Sun

Zhou

et al. 2014

Sci Rep

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We present analyses of a lacustrine sediment core (DY6) on Dongdao Island, which provides high-resolution paleoclimate records for the South China Sea (SCS). Results of element analyses indicate that the concentrations of Ti and Al in DY6 are much higher than the background on the island. Morphological characteristics of acidic insoluble particles are similar to aeolian in East China. Sr and Nd isotope compositions in these particles are consistent with those in Asian aeolian dust. We inferred that dust in DY6 may have been transported by East Asian Winter Monsoon (EAWM) from inland Asia. The continuous dust records for the past 1400 years in North SCS were presented based on the measured Ti flux, which revealed an opposite trend to the variations in the EAWM for the past 50 years. A comparison of wind fields between cold and warm years shows that north surface wind in southeast China was stronger in cold years. However, 850 hPa wind vector along the east coast of China, the key level of wind for long-distance dust transmission, weakened in cold years. We conclude that differences in the EAWM records can be attributed to the 850 hPa wind pattern in different areas.

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Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 93%

A 1400-year terrigenous dust record on a coral island in South China Sea

Liu

Sun

Zhou

et al. 2014

Sci Rep

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“…The two proxies exhibited sharp fluctuations during the Little Ice Age (LIA), indicating that more frequent and/or intensive dust storms took place during this interval than during the Medieval Warm Period (MWP) (e.g., Events 3 and 2). The higher atmospheric dust loadings during the LIA compared to the MWP is documented by dust fall frequencies obtained from Chinese historical records [ Zhang , ]; by the record of microparticle concentration in the Dunde ice core from Qianlian mountain about 400 km from Lake Sugan [ Mosley‐Thompson et al ., ]; by the variations in Ti content [ Sorrel et al ., ] and particle components [ Huang et al ., ] of Aral Sea sediments; and by the non–sea salt ion (nssK + ) record of the GISP2 ice core [ Mayewski and Maasch , ], especially from ~ AD 1500 to 1700 (Figures 6c–6f).…”

Section: Discussionmentioning

confidence: 99%

A 2000‐year dust storm record from Lake Sugan in the dust source area of arid China

et al. 2013

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Arid northwestern China is considered to be a major source of atmospheric dust supply to the Northern Hemisphere. However, dust storm evolution and dust emission processes in the past remain unclear due to the scarcity of geologic archives in this region. Hydrologically closed lakes in dust source areas act as a trap, providing the opportunity to trace the history of dust emission or eolian activity. Here we present the results of dust storm proxies and a dust storm history from Lake Sugan in the Qaidam Basin, a dust source area, on the northern Qinghai‐Tibetan Plateau. Grain size analyses of the materials deposited during modern dust storms and of the lake surface sediments demonstrate that the coarse component of the lake sediments was transported primarily by ambient winds when dust storms occurred. In combination with a sediment chronology generated by counting annual laminations, a 2000‐year dust storm history was reconstructed on the basis of changes in the coarse component and magnetic susceptibility of the lake sediments. Frequent and/or intensive dust storms occurred during the intervals AD 300–500, AD 1180–1240, and AD 1500–1700. The occurrence of dust storms largely coincided with the strengthening of the Siberian High with colder air masses from high latitudes, such as during the Little Ice Age, frequently encroaching into the dust source areas in northwestern China. Our results suggest that wind strength plays an important role in dust emissions in arid source areas. However, dust storms in the late 20th century are most likely associated with disturbance of the ground surface caused by petroleum exploitation in the Qaidam Basin.

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“…Fig. 3 in Huang et al, 2011). The Siberian anticyclone dominates winter and spring climate over Eurasia (Gong and Ho, 2002;Obreht et al, 2017;Panagiotopoulos et al, 2005;Sahsamanoglou et al, 1991).…”

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confidence: 99%

Eolian dust dispersal patterns since the last glacial period in eastern Central Asia: insights from a loess-paleosol sequence in the Ili Basin

Song

Fitzsimmons

et al. 2018

Clim. Past

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Abstract. The extensive loess deposits of the Eurasian midlatitudes provide important terrestrial archives of Quaternary climatic change. As yet, however, loess records in Central Asia are poorly understood. Here we investigate the grain size and magnetic characteristics of loess from the Nilka (NLK) section in the Ili Basin of eastern Central Asia. Weak pedogenesis suggested by frequency-dependent magnetic susceptibility (χ fd %) and magnetic susceptibility (MS) peaks in primary loess suggest that MS is more strongly influenced by allogenetic magnetic minerals than pedogenesis, and may therefore be used to indicate wind strength. This is supported by the close correlation between variations in MS and proportions of the sand-sized fraction. To further explore the temporal variability in dust transport patterns, we identified three grain size end-members (EM1, mode size 47.5 µm; EM2, 33.6 µm; EM3, 18.9 µm) which represent distinct aerodynamic environments. EM1 and EM2 are inferred to represent grain size fractions transported from proximal sources in short-term, near-surface suspension during dust outbreaks. EM3 appears to represent a continuous background dust fraction under non-dust storm conditions. Of the three end-members, EM1 is most likely the most sensitive recorder of wind strength. We compare our EM1 proportions with mean grain size from the Jingyuan section in the Chinese loess plateau, and assess these in the context of modern and Holocene climate data. Our research suggests that the Siberian High pressure system is the dominant influence on wind dynamics, resulting in loess deposition in the eastern Ili Basin. Six millennial-scale cooling (Heinrich) events can be identified in the NLK loess records. Our grain size data support the hypothesis that the Siberian High acts as teleconnection between the climatic systems of the North Atlantic and East Asia in the high northern latitudes, but not for the mid-latitude westerlies.

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Dust deposition in the Aral Sea: implications for changes in atmospheric circulation in central Asia during the past 2000 years

Cited by 59 publications

References 63 publications

A 1400-year terrigenous dust record on a coral island in South China Sea

A 1400-year terrigenous dust record on a coral island in South China Sea

A 2000‐year dust storm record from Lake Sugan in the dust source area of arid China

Eolian dust dispersal patterns since the last glacial period in eastern Central Asia: insights from a loess-paleosol sequence in the Ili Basin

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