气候变化领域集成服务门户(CCPortal): Temperature Trends in the Northwestern Tibetan Plateau Constrained by Ice Core Water Isotopes Over the Past 7,000 Years

CCPortal

DOI	10.1029/2020JD032560
	Temperature Trends in the Northwestern Tibetan Plateau Constrained by Ice Core Water Isotopes Over the Past 7,000 Years
	Pang H.; Hou S.; Zhang W.; Wu S.; Jenk T.M.; Schwikowski M.; Jouzel J.
发表日期	2020
ISSN	2169897X
卷号	125 期号:19
英文摘要	The reasons for the Holocene temperature conundrum, known as the inconsistency between the reconstructed cooling and the inferred warming simulations during the Holocene, remain unclear. Temperature reconstructions from the Tibetan Plateau (TP) provide important insights for understanding the Holocene temperature conundrum due to enhanced sensitivity to climate at high altitudes. Given the significant positive correlation between air temperature and δ18O in precipitation over the northern TP, the stable isotopic records of ice cores recovered from this area are widely used for paleotemperature reconstruction. Here we present a new high-resolution δ18O record from the Chongce ice cores to bedrock, dated back to 7 ka BP by the accelerator mass spectrometry (AMS) 14C dating technique. Our reconstructed temperature record shows a long-term warming trend until ~2 ka BP, followed by an abrupt change to a relatively cool period until the start of the industrial-era warming. This record challenges the widely recognized Holocene reconstruction from the neighboring Guliya ice core. It is also different from many previous temperature reconstructions, most of which have summer biases and show a long-term cooling trend over the past two millennia. In addition, our record shows that temperatures during the recent decades are almost the highest during the past 7 ka BP, highlighting the unusual warming forced by anthropogenic greenhouse gases. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	climate change; glacier; ice core; Tibetan Plateau; water stable isotopes
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185719
作者单位	Key Laboratory of Coast and Island Development of Ministry of Education, School of Geography and Ocean Science, Nanjing University, Nanjing, China; School of Oceanography, Shanghai Jiao Tong University, Shanghai, China; Department of Geology, University of Dayton, Dayton, OH, United States; Laboratory of Environmental Chemistry, Paul Scherrer Institute, Villigen, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; Laboratoire des Sciences du Climat et de l'Environnement, UMR8212, CEA-CNRS-UVSQ/IPSL, Gif-sur-Yvette, France
推荐引用方式 GB/T 7714	Pang H.,Hou S.,Zhang W.,et al. Temperature Trends in the Northwestern Tibetan Plateau Constrained by Ice Core Water Isotopes Over the Past 7,000 Years[J],2020,125(19).
APA	Pang H..,Hou S..,Zhang W..,Wu S..,Jenk T.M..,...&Jouzel J..(2020).Temperature Trends in the Northwestern Tibetan Plateau Constrained by Ice Core Water Isotopes Over the Past 7,000 Years.Journal of Geophysical Research: Atmospheres,125(19).
MLA	Pang H.,et al."Temperature Trends in the Northwestern Tibetan Plateau Constrained by Ice Core Water Isotopes Over the Past 7,000 Years".Journal of Geophysical Research: Atmospheres 125.19(2020).