气候变化领域集成服务门户(CCPortal): Modeling a modern-like <i>p</i>CO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere-ocean coupled general circulation model

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DOI	10.5194/cp-16-1-2020
	Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere-ocean coupled general circulation model
	Tan N.; Contoux C.; Ramstein G.; Sun Y.; Dumas C.; Sepulchre P.; Guo Z.
发表日期	2020
ISSN	18149324
起始页码	1
结束页码	16
卷号	16 期号:1
英文摘要	The mid-Piacenzian warm period (3.264 to 3.025 Ma) is the most recent geological period with present-like atmospheric pCO2 and is thus expected to have exhibited a warm climate similar to or warmer than the present day. On the basis of understanding that has been gathered on the climate variability of this interval, a specific interglacial (Marine Isotope Stage KM5c, MIS KM5c; 3.205 Ma) has been selected for the Pliocene Model Intercomparison Project phase 2 (PlioMIP 2). We carried out a series of experiments according to the design of PlioMIP2 with two versions of the Institut Pierre Simon Laplace (IPSL) atmosphere-ocean coupled general circulation model (AOGCM): IPSL-CM5A and IPSL-CM5A2. Compared to the PlioMIP 1 experiment, run with IPSL-CM5A, our results show that the simulated MIS KM5c climate presents enhanced warming in mid- to high latitudes, especially over oceanic regions. This warming can be largely attributed to the enhanced Atlantic Meridional Overturning Circulation caused by the high-latitude seaway changes. The sensitivity experiments, conducted with IPSL-CM5A2, show that besides the increased pCO2, both modified orography and reduced ice sheets contribute substantially to mid- to high latitude warming in MIS KM5c. When considering the pCO2 uncertainties ( $+ / -$ 50 ppmv) during the Pliocene, the response of the modeled mean annual surface air temperature to changes to pCO2 ( $+ / - 50$ ppmv) is not symmetric, which is likely due to the nonlinear response of the cryosphere (snow cover and sea ice extent). By analyzing the Greenland Ice Sheet surface mass balance, we also demonstrate its vulnerability under both MIS KM5c and modern warm climate. © 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	air temperature; atmosphere-ocean coupling; carbon dioxide; climate modeling; cryosphere; general circulation model; interglacial; marine isotope stage; meridional circulation; orography; paleoclimate; Pliocene; sea ice; Arctic; Greenland; Greenland Ice Sheet; oceanic regions
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146761
作者单位	Key Laboratory of Cenozoic Geology and Environment, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China; Laboratoire des Sciences du Climat et de l'Environnement, LSCE, IPSL, CEA-CNRS-UVSQ, Université Paris-Saclay, Gif-sur-Yvette, 91191, France; State Key Laboratory of Numerical Modelling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Tan N.,Contoux C.,Ramstein G.,et al. Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere-ocean coupled general circulation model[J],2020,16(1).
APA	Tan N..,Contoux C..,Ramstein G..,Sun Y..,Dumas C..,...&Guo Z..(2020).Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere-ocean coupled general circulation model.Climate of the Past,16(1).
MLA	Tan N.,et al."Modeling a modern-like pCO2 warm period (Marine Isotope Stage KM5c) with two versions of an Institut Pierre Simon Laplace atmosphere-ocean coupled general circulation model".Climate of the Past 16.1(2020).