Last Glacial climate reconstruction by exploring glacier sensitivity to climate on the southeastern slope of the western Nyaiqentanglha Shan, Tibetan Plateau

Xu, Xiangke; Pan, Baolin; Dong, Guohui; Yi, Chaolu; Glasser, Neil F.

doi:10.1017/jog.2016.147

Cited by 19 publications

(17 citation statements)

References 51 publications

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“…Xu et al . (2017a) suggested that the LGM temperature was 2.9–4.6 °C lower than today in a four‐valley‐glacier catchment, just about 20 km east of Quemuqu Valley. Assuming that during the LGM the two adjacent sites were influenced by the same climate conditions, a single ΔT ‐ F p combination would explain the glacier extents in the two sites.…”

Section: Discussionmentioning

confidence: 99%

“…Plots of the temperature and precipitation combinations ( ΔT ‐ F p ) constructed in this study and Xu et al . (2017a). Note that the intersection of the two ΔT ‐ F p curves supports the respective LGM glacier extents in both studies.…”

Section: Discussionmentioning

confidence: 99%

“…Because the DDF i has a direct impact on the calculation of ice ablation, and has high uncertainty, we calibrated this parameter using the method of Xu et al . (2017a). When the DDF i values are constrained to 9.0 and 10.5 mm °C −1 day −1 , the model can reproduce the modern glaciers (observed in the year of 2009, Guo et al .…”

Section: Modelling Methodsmentioning

confidence: 99%

“…We use an ice model to reconstruct the LGM glaciers from moraines and cosmogenic 10 Be exposure dating in the Quemuqu Valley. To do this, we run a 2D temperature-index mass balance model, coupled to a shallow iceflow model that was previously used to model mountain glacier extents on the Tibetan Plateau (Xu et al 2013(Xu et al , 2017a). In the model, the glacier net mass balance (MB, mm year À1 ) is calculated by using a positive degree-day approach (Braithwaite 1995;Hock 2003):…”

Section: Modelling Methodsmentioning

confidence: 99%

“…Wu et al (2010) argued that for the Zhadang Glacier, the DDF s is 5.3 mm°C À1 day À1 , and the DDF i ranges from 4.0 to 14 mm°C À1 day À1 . Because the DDF i has a direct impact on the calculation of ice ablation, and has high uncertainty, we calibrated this parameter using the method of Xu et al (2017a). When the DDF i values are constrained to 9.0 and 10.5 mm°C À1 day À1 , the model can reproduce the modern glaciers (observed in the year of 2009, Guo et al 2015) in the Quemuqu Valley (Fig.…”

Section: Monthmentioning

confidence: 99%

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Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications

Zhang

et al. 2019

Boreas

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A well‐preserved Last Glacial Maximum (LGM) moraine set in the Quemuqu Valley on the eastern slope of the Qiongmu Gangri Peak offers great potential for reconstructing LGM glacier extent and examining LGM climate in the region. This study employed a coupled and physics‐based mass balance and ice‐flow model to investigate glacier sensitivities to climate in the valley. Based on the sensitivity tests and the well‐preserved LGM moraines, the study also reconstructed the LGM glacier extent in the valley and assessed the magnitude of cooling for the LGM period. Model results suggest that the Quemuqu Valley sustained an ice volume of 6.80±0.16 km3 in the LGM period. Temperature depression of 3.1–4.3 °C, combined with 30–70% modern precipitation, is likely to have supported the LGM glacier extent in the valley. The temperature inference for the LGM period is comparable with other independent palaeoclimate evidence in the region. However, there is a large difference in the reconstructed glacier volume (ice thickness) between previous research and the current study. The glacier model used here directly calculates the ice thickness and needs relatively less field evidence to constrain the model simulations. It is therefore advocated to use such a model to reconstruct past glaciers and their corresponding climates for other valleys of the Tibetan Plateau.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Modelling Methodsmentioning

confidence: 99%

Section: Modelling Methodsmentioning

confidence: 99%

Section: Monthmentioning

confidence: 99%

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Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications

Zhang

et al. 2019

Boreas

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Glacial fluctuations during the Last Glacial Maximum and Lateglacial in the Zhuxi and Songlong valleys, eastern Nyainqêntanglha Range, southeastern Tibet

Xie

Yang

Zhou

et al. 2023

J Quaternary Science

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This study outlines the paleoglacial history and paleoclimatic conditions that were present during the Last Glacial Maximum (LGM) and Lateglacial (LG) in the Songlong and Zhuxi valleys in the eastern Nyainqêntanglha Range, southeastern Tibet. Two sets of moraines were identified at the valley mouths, and were dated using cosmogenic 10Be exposure and optically stimulated luminescence (OSL) dating. The ages suggest that two glaciations occurred at ~20–21 and ~14–16 ka, respectively, coinciding with the LGM and LG. Using glacier–climate modeling, temperature drops were calculated to have ranged from 6.3 to 7.8 °C during the LGM–LG, with precipitation being 40–60% of the present‐day value. The results in the modeled domain appear generally consistent with other climatic records from the Tibetan Plateau. Glacial advances in monsoon‐dominated southeastern Tibet during the LGM–LG were probably driven by low temperatures rather than by high precipitation, which was usually produced by an enhanced Indian Summer Monsoon during periods of climatic warming.

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Glacier changes since the Last Glacial Maximum on two slopes of Mt Noijin Kang‐Sang, Southern Tibetan Plateau

Liu,

Li,

et al. 2023

J Quaternary Science

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In recent decades, most glaciers have been melting, thinning and retreating globally in response to continuously increasing temperatures. We simulated ice thicknesses and volumes on the east and west slopes of Mt Noijin Kang‐Sang, Southern Tibetan Plateau (TP), since the Last Glacial Maximum (LGM), using a glacial flowline model. The simulated average ice thicknesses during the LGM and Lateglacial (LG), Early Holocene, Neoglacial and the Little Ice Age (LIA) periods were 1.4, 1.3, 1.1 and 1.2 times greater than those of modern glaciers in the Gangbu (eastern slope) and western valleys, respectively. In the Gangbu Valley, areas from the LGM‐LG to LIA periods were 1.7, 1.5, 1.4 and 1.2 times greater than the modern glacier area, and the volume expansion indexes were 2.2, 1.9, 1.5 and 1.4. In the western valleys, the area expansion indexes were 2.2, 1.9, 1.5 and 1.4 times greater than the modern glacier, and volumes were 5.4, 4.4, 3.4 and 2.9 times greater, respectively. Glaciers in the western valleys retreated more extensively than those on the eastern slopes of Gangbu Valley after the LGM‐LG, probably due to the smaller glaciers on the leeward western slopes with lower elevations. Equilibrium‐line altitudes dropped ~425 m in Gangbu Valley and ~385 m in the western valleys during the LGM‐LG, corresponding to a 3.8–4.1 °C temperature decrease in this region, which was consistent with cooling on the central Tibetan Plateau, but lower than cooling at the south‐eastern edge of the Tibetan Plateau.

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Last Glacial climate reconstruction by exploring glacier sensitivity to climate on the southeastern slope of the western Nyaiqentanglha Shan, Tibetan Plateau

Cited by 19 publications

References 51 publications

Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications

Last Glacial Maximum glacier modelling in the Quemuqu Valley, southern Tibetan Plateau, and its climatic implications

Glacial fluctuations during the Last Glacial Maximum and Lateglacial in the Zhuxi and Songlong valleys, eastern Nyainqêntanglha Range, southeastern Tibet

Glacier changes since the Last Glacial Maximum on two slopes of Mt Noijin Kang‐Sang, Southern Tibetan Plateau

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