气候变化领域集成服务门户(CCPortal): Temperature Variation on the Central Tibetan Plateau Revealed by Glycerol Dialkyl Glycerol Tetraethers From the Sediment Record of Lake Linggo Co Since the Last Deglaciation

CCPortal

DOI	10.3389/feart.2020.574206
	Temperature Variation on the Central Tibetan Plateau Revealed by Glycerol Dialkyl Glycerol Tetraethers From the Sediment Record of Lake Linggo Co Since the Last Deglaciation
	He, Yue; Hou, Juzhi; Wang, Mingda; Li, Xiumei; Liang, Jie; Xie, Shuyun; Jin, Yurong
通讯作者	Hou, JZ (通讯作者)
发表日期	2020
EISSN	2296-6463
卷号	8
英文摘要	The Tibetan Plateau (TP) has numerous glaciers that provide water for more than one-third of the world's population. Reconstructing past temperature change on the TP provides a valuable context for assessing the current and possible future status of glaciers. However, the quantitative paleotemperature records since the last deglaciation on the TP are sparse. Moreover, existing records have revealed a conflicting Holocene temperature variation patterns on the northeastern and western TP. Quantitative temperature records on the central TP would be essential for a better understanding of the spatiotemporal complexity of temperature variation. In this study, we report the temperature record from the sedimentary record of lake Linggo Co on the central TP since the last deglaciation using branched glycerol dialkyl glycerol tetraethers based proxy. Our results indicate that the paleoclimate during the last deglaciation on the central TP was characterized by large fluctuations in temperature. The mean annual temperature of lake Linggo Co remained low during the early Holocene (11.7-10 ka BP) and gradually increased to 4 degrees C at 8.3 ka, rapidly declining to -2 degrees C on average toward the present day. Solar radiation, continental glacier feedback, as well as atmosphere circulation play a major role in the distribution of sensitive and latent heat, thus affecting the Holocene temperature variability of the TP. Discrepancies in published records on the TP can result from a seasonal bias of the proxies and spatial differences due to topography-boundary effect. Our results suggest that the seasonal bias of proxies, the spatiotemporal difference should be taken into consideration before regional or global synthesis of paleotemperature records.
关键词	CRENARCHAEOTAL MEMBRANE-LIPIDS INDIAN-SUMMER MONSOON SURFACE SEDIMENTS TEX86 PALEOTHERMOMETER PALEOTEMPERATURE PROXY PARTICULATE MATTER MOISTURE EVOLUTION BRANCHED GDGTS CLIMATE-CHANGE CENTRAL-ASIA
英文关键词	Tibetan Plateau; Linggo Co; the last deglaciation; paleotemperature; glycerol dialkyl glycerol tetraethers
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000572496700001
来源期刊	FRONTIERS IN EARTH SCIENCE
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/260010
推荐引用方式 GB/T 7714	He, Yue,Hou, Juzhi,Wang, Mingda,et al. Temperature Variation on the Central Tibetan Plateau Revealed by Glycerol Dialkyl Glycerol Tetraethers From the Sediment Record of Lake Linggo Co Since the Last Deglaciation[J]. 中国科学院青藏高原研究所,2020,8.
APA	He, Yue.,Hou, Juzhi.,Wang, Mingda.,Li, Xiumei.,Liang, Jie.,...&Jin, Yurong.(2020).Temperature Variation on the Central Tibetan Plateau Revealed by Glycerol Dialkyl Glycerol Tetraethers From the Sediment Record of Lake Linggo Co Since the Last Deglaciation.FRONTIERS IN EARTH SCIENCE,8.
MLA	He, Yue,et al."Temperature Variation on the Central Tibetan Plateau Revealed by Glycerol Dialkyl Glycerol Tetraethers From the Sediment Record of Lake Linggo Co Since the Last Deglaciation".FRONTIERS IN EARTH SCIENCE 8(2020).