气候变化领域集成服务门户(CCPortal): Reconstructions of Little Ice Age glaciers and climate in the Tanggula Mountains, Central Tibet Plateau

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DOI	10.1016/j.palaeo.2023.112008
	Reconstructions of Little Ice Age glaciers and climate in the Tanggula Mountains, Central Tibet Plateau
	Zhang, Hongjie; Xu, Xiangke; Sun, Yaqing; Li, Jiule; Xu, Baiqing
发表日期	2024
ISSN	0031-0182
EISSN	1872-616X
卷号	637
英文摘要	Mountain glaciers are one of the most sensitive indicators of climate change. Reconstructing past glacier extents provides valuable insights into the climate change for specific regions where instrumental records are not enough and even absent. In the paper we mapped the outlines for 691 Little Ice Age (LIA) glaciers in terms of prominent moraines beyond contemporary glaciers in the Tanggula Mountains, central Tibetan Plateau (TP). Based on these glacier outlines, we reconstructed the ice thicknesses and surfaces for the LIA glaciers in the region. Accordingly, we calculated the equilibrium-line altitudes (ELAs) for contemporary and LIA glaciers. By comparing the ELAs between the contemporary and LIA glaciers, we estimated the LIA summer temperature decreases in different subregions of the Tanggula Mountains. Since the LIA, the ELA have risen by 35.6 +/- 18.8 m, 26.1 +/- 17.6 m, and 63.1 +/- 38.6 m in the respective western, central, and eastern subregions of the Tanggula Mountains. Assuming no change in precipitation, the LIA summer temperature would decrease by 0.22 +/- 0.12 degrees C, 0.14 +/- 0.09 degrees C, and 0.34 +/- 0.21 degrees C in the three subregions, respectively. Moreover, glaciers in the western, central, and eastern subregions have lost 13.3%, 23.9%, and 42.8% of their area, 15.4%, 25.3%, and 39.6% of their length, and 20.8%, 39.0%, and 61.0% of their volume, respectively. By compiling the LIA ELA data from previous studies, we also estimated the LIA summer temperature changes for other regions of the TP. The LIA ELA and summer temperature changes relative to the present showed a decreasing trend from the edges towards the interior on the TP.
关键词	Tanggula Mountains Little Ice Age Equilibrium-line altitude Paleoglacier reconstruction Paleoclimate
英文关键词	EQUILIBRIUM-LINE; QUATERNARY GLACIATION; MAXIMUM; AREA; SURFACE; SHAN; MECHANISMS; THICKNESS; HIMALAYA; DRIVERS
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001153279300001
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283202
作者单位	Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Zhang, Hongjie,Xu, Xiangke,Sun, Yaqing,et al. Reconstructions of Little Ice Age glaciers and climate in the Tanggula Mountains, Central Tibet Plateau[J]. 中国科学院青藏高原研究所,2024,637.
APA	Zhang, Hongjie,Xu, Xiangke,Sun, Yaqing,Li, Jiule,&Xu, Baiqing.(2024).Reconstructions of Little Ice Age glaciers and climate in the Tanggula Mountains, Central Tibet Plateau.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,637.
MLA	Zhang, Hongjie,et al."Reconstructions of Little Ice Age glaciers and climate in the Tanggula Mountains, Central Tibet Plateau".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 637(2024).