气候变化领域集成服务门户(CCPortal): Revised paleoaltimetry data show low Tibetan Plateau elevation during the Eocene

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DOI	10.1126/science.aaq1436
	Revised paleoaltimetry data show low Tibetan Plateau elevation during the Eocene
	Botsyun S.; Sepulchre P.; Donnadieu Y.; Risi C.; Licht A.; Caves Rugenstein J.K.
发表日期	2019
ISSN	0036-8075
卷号	363 期号:6430
英文摘要	Paleotopographic reconstructions of the Tibetan Plateau based on stable isotope paleoaltimetry methods conclude that most of the Plateau's current elevation was already reached by the Eocene, ~40 million years ago. However, changes in atmospheric and hydrological dynamics affect oxygen stable isotopes in precipitation and may thus bias such reconstructions. We used an isotope-equipped general circulation model to assess the influence of changing Eocene paleogeography and climate on paleoelevation estimates. Our simulations indicate that stable isotope paleoaltimetry methods are not applicable in Eocene Asia because of a combination of increased convective precipitation, mixture of air masses, and widespread aridity. Rather, a model-data comparison suggests that the Tibetan Plateau only reached low to moderate (less than 3000 meters) elevations during the Eocene, reconciling oxygen isotope data with other proxies. © 2019 The Authors, some rights reserved. All rights reserved.
英文关键词	oxygen; stable isotope; air mass; altimetry; aridity; elevation; Eocene; general circulation model; oxygen isotope; paleotopography; stable isotope; altitude; Article; atmosphere; calibration; climate change; environmental impact assessment; environmental monitoring; Eocene; evaporation; humidity; hydrology; paleoaltimetry; paleoclimate; precipitation; priority journal; sea level; sea surface temperature; summer; temperature sensitivity; China; Qinghai-Xizang Plateau
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/243103
作者单位	Laboratoire des Sciences du Climat et de l'Environnement (LSCE), Institute Pierre Simon Laplace (IPSL), Commissariat á l'Énergie Atomique et aux Énergies Alternatives (CEA)CNRS-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Université Paris-Saclay, Gif-sur-Yvette, France; Department of Geosciences, University of Tübingen, Tübingen, Germany; Aix-Marseille Université, CNRS, Institut pour la Recherche et le Développement (IRD), Collège de France, Centre de Recherche et d'Enseignement de Géosciences de l'Environnement (CEREGE), Aix-en-Provence, France; Laboratoire de Météorologie Dynamique, IPSL, Sorbonne Université, CNRS, Paris, France; Department of Earth and Space Sciences, University of Washington, Seattle, WA, United States; Department of Earth System Science, Stanford University, Stanford, CA, United States; Department of Earth Sciences, ETH-Zürich, Zürich, Switzerland
推荐引用方式 GB/T 7714	Botsyun S.,Sepulchre P.,Donnadieu Y.,et al. Revised paleoaltimetry data show low Tibetan Plateau elevation during the Eocene[J],2019,363(6430).
APA	Botsyun S.,Sepulchre P.,Donnadieu Y.,Risi C.,Licht A.,&Caves Rugenstein J.K..(2019).Revised paleoaltimetry data show low Tibetan Plateau elevation during the Eocene.Science,363(6430).
MLA	Botsyun S.,et al."Revised paleoaltimetry data show low Tibetan Plateau elevation during the Eocene".Science 363.6430(2019).