A 14 ka high-resolution δ18O lake record reveals a paradigm shift for the process-based reconstruction of hydroclimate on the northern Tibetan Plateau

Wünnemann, B.; Yan, Dada; Andersen, Nils; Riedel, Frank; Zhang, Yongzhan; Sun, Qianli; Hoelzmann, Philipp

doi:10.1016/j.quascirev.2018.09.040

Cited by 53 publications

(41 citation statements)

References 102 publications

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“…δ 18 O of meteoric water as recorded in pedogenic/palustrine carbonate has been widely used to investigate ancient continental climate and paleohydrology (Cave et al., 2015; Han et al, 1995, 1996; Henderson et al., 2010; Qiang et al., 2017; Wünnemann et al., 2018). The δ 18 O of carbonates is determined by that of soil water/lake water during carbonate formation which closely connects with regional precipitation.…”

Section: Discussionmentioning

confidence: 99%

A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon

Wang

Sun

et al. 2021

Geochem Geophys Geosyst

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The variation and interplay of westerlies and the Asian summer monsoon (ASM) are important for understanding climate change in the Northern Hemisphere. Yet their spatial and temporal evolution is still debatable. Here, we present a stable isotopic record from the center of the Badain Jaran Desert, in Northwestern China, which records the variations and interplay of the two climate systems during the past 1200 ka. The results indicate that the westerlies dominated the Badain Jaran area at least from 1200 to 600 ka, and possibly earlier. Associated with ASM enhancement since 600 ka, the westerlies and ASM alternatively dominated the regional warm season precipitation during glacial‐interglacial cycles, respectively. Meanwhile, the δ18Ocarb of the Badain Jaran area showed high‐frequency fluctuations which may reveal the joint impact of ASM and westerlies on regional hydrology after 450 ka. Affected by the westerlies and ASM changes, the C4 plants stepwise expanded at 600, 450, and 300 ka. These stepwise variations of westerlies and ASM are response to the global climate change which significantly influenced the ASM at 600 and 450 ka, and westerlies at 300 ka, respectively. In addition, the uplift of the Pamir‐Tibetan Plateau during the middle Pleistocene also exerts a profound effect on westerlies and ASM pattern across the East Asia on a long‐term time scale.

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Section: Discussionmentioning

confidence: 99%

A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon

Wang

Sun

et al. 2021

Geochem Geophys Geosyst

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“…In this section, we discuss the effects of these two factors respectively and spatial distributions of the oxygen isotopic composition of lacustrine carbonates in Western China. In this study, the carbonate samples provide integrated climate signals cover several years as the sedimentation rate of surface sediment ranges from 0.01 to 0.3 cm/yr throughout our sampling locations [37][38][39][40][41] . In general, lacustrine authigenic carbonates precipitate in summer, when the carbonate saturation of lake water peaks and carbonate solubility is simultaneously depressed in the epilimnion 5,9,42,43 .…”

Section: Discussionmentioning

confidence: 99%

“…In this study, the carbonate samples provide integrated climate signals cover several years as the sedimentation rate of surface sediment ranges from 0.01 to 0.3 cm/yr throughout our sampling locations 37 – 41 . In general, lacustrine authigenic carbonates precipitate in summer, when the carbonate saturation of lake water peaks and carbonate solubility is simultaneously depressed in the epilimnion 5 , 9 , 42 , 43 .…”

Section: Discussionmentioning

confidence: 99%

Factors controlling the oxygen isotopic composition of lacustrine authigenic carbonates in Western China: implications for paleoclimate reconstructions

Liu

Tripati

et al. 2020

Sci Rep

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In the carbonate-water system, at equilibrium, the oxygen isotopic composition of carbonate is dependent not only on the temperature but also on the isotopic composition of host water in which the carbonate is formed. In this study, lake surface sediment and water samples were collected from 33 terminal lakes in Western China to evaluate controls on the oxygen isotopic composition of lacustrine authigenic carbonates (δ18Ocarb) and its spatial distribution. Our results show that water oxygen isotopic composition (δ18Owater) rather than lake summer water temperature (Twater), is the main determinant of δ18Ocarb, irrespective of whether oxygen isotope equilibrium is achieved. There are significant linear correlations between δ18Ocarb and elevation, as well as that between δ18Ocarb and latitude for lakes located on the Tibetan Plateau. In Western China, the spatial distribution of δ18Ocarb is consistent with that of δ18Owater, and is ultimately controlled by the isotopic composition of local precipitation (δ18Oprecipitation) that depends on the source of water vapor. Therefore, changes in δ18Ocarb can be predominantly interpreted as variations of δ18Owater, which in turn represent changes in δ18Oprecipitation for paleoclimate reconstructions in this region, and may be relevant to studies of other areas.

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“…Therefore, δ 18 O records from authigenic or biogenic carbonate in lake sediments are one of the most valuable indicators of climate change (Leng and Marshall, 2004; Zhang et al, 2011), and have been widely used for paleoclimatic reconstruction across the EASM region of China (e.g. Qiang et al, 2017; Wei and Gasse, 1999; Wünnemann et al, 2018; Zhang et al, 2011). However, the scarcity of modern process studies of the relationship between climatic variables and δ 18 O records hinders the interpretation of δ 18 O-based paleoclimate reconstructions from lake sediments (Anderson et al, 2016; Jones et al, 2016).…”

Section: ⅰ Introductionmentioning

confidence: 99%

“…For example, Li et al (2017) suggested that the d 18 O of carbonates from hydrologically closed Kuhai Lake was an indirect proxy of past Yellow River flow. However, based on a high-resolution carbonate d 18 O record from the same lake, Wünnemann et al (2018) suggested that enriched d 18 O values in the lake sediments were primarily the result of high evaporation during the summer season, while depleted d 18 O values were mainly attributed to water supply during the non-summer season. In Qinghai Lake, Zhang et al (1989Zhang et al ( , 1994 proposed that the d 18 O composition of ostracods indicated changes in paleotemperature.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variations in the lake-water oxygen isotope composition of four lakes in the East Asian summer monsoon region: Implications for the interpretation of paleo-isotope records

Zhang

Liu

et al. 2019

Progress in Physical Geography: Earth and Environment

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The scarcity of modern process studies of the relationship between climatic variables and lake-water oxygen isotope (δ18OLW) composition has restricted our understanding of the climatic significance of oxygen isotope (δ18O) records from lake sediments. We measured changes in δ18OLW at four lakes (Nanyihu, Gonghai, Mayinghai and Xihaizi) at various locations across the East Asian summer monsoon (EASM) region, from December 2016 to January 2018. The variations in δ18OLW at Lake Nanyihu, located in the lower reach of the Yangtze River, are controlled by precipitation oxygen isotope (δ18OP) composition, temperature and evaporation during the non-monsoon season. However, the variations in δ18OLW at the lakes close to the northern limit of the EASM (Gonghai, Mayinghai and Xihaizi) are affected not only by δ18OP, temperature and evaporation, but also by the replenishment of groundwater during the non-monsoon season. In general, during the non-monsoon season, the variation of δ18OLW exhibits a variety of patterns and the controlling factors across the EASM region are complex. During the monsoon season, although the effect of evaporation-induced isotopic enrichment still affects δ18OLW, the variations in δ18OLW are more influenced by the supply of abundant precipitation with lower δ18OP to the lakes, which caused a substantial decrease in δ18OLW across the EASM region in this season. Therefore, the variations in δ18OLW mainly reflect the δ18OP of the EASM during the monsoon season. However, the timing of the peak in monsoon precipitation does not correspond well to minima in δ18OLW, and correlation analysis reveals that there is only a weak relationship between δ18OLW and precipitation/humidity at all four lakes during the monsoon season. These findings demonstrate that although δ18OLW can represent the δ18OP of the EASM, it does not reflect precipitation/humidity during the monsoon season. Overall, our findings indicate that the seasonal variations of δ18OLW across the EASM region are controlled by different climatic variables, which implies that the interpretation of lacustrine δ18O records across the EASM region as an indicator of regional effective precipitation/humidity needs to be reassessed.

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A 14 ka high-resolution δ18O lake record reveals a paradigm shift for the process-based reconstruction of hydroclimate on the northern Tibetan Plateau

Cited by 53 publications

References 102 publications

A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon

A 1200 ka Stable Isotope Record From the Center of the Badain Jaran Desert, Northwestern China: Implications for the Variation and Interplay of the Westerlies and the Asian Summer Monsoon

Factors controlling the oxygen isotopic composition of lacustrine authigenic carbonates in Western China: implications for paleoclimate reconstructions

Seasonal variations in the lake-water oxygen isotope composition of four lakes in the East Asian summer monsoon region: Implications for the interpretation of paleo-isotope records

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