气候变化领域集成服务门户(CCPortal): Plant physiology increases the magnitude and spread of the transient climate response to CO2 in CMIP6 earth system models

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DOI	10.1175/JCLI-D-20-0078.1
	Plant physiology increases the magnitude and spread of the transient climate response to CO2 in CMIP6 earth system models
	Zarakas C.M.; Swann A.L.S.; Laguë M.M.; Armour K.C.; Randerson J.T.
发表日期	2020
ISSN	0894-8755
起始页码	8561
结束页码	8578
卷号	33 期号:19
英文摘要	Increasing concentrations of CO2 in the atmosphere influence climate both through CO2’s role as a greenhouse gas and through its impact on plants. Plants respond to atmospheric CO2 concentrations in several ways that can alter surface energy and water fluxes and thus surface climate, including changes in stomatal conductance, water use, and canopy leaf area. These plant physiological responses are already embedded in most Earth system models, and a robust literature demonstrates that they can affect global-scale temperature. However, the physiological contribution to transient warming has yet to be assessed systematically in Earth system models. Here this gap is addressed using carbon cycle simulations from phases 5 and 6 of the Coupled Model Intercomparison Project (CMIP) to isolate the radiative and physiological contributions to the transient climate response (TCR), which is defined as the change in globally averaged near-surface air temperature during the 20-yr window centered on the time of CO2 doubling relative to preindustrial CO2 concentrations. In CMIP6 models, the physiological effect contributes 0.128C (s: 0.098C; range: 0.028–0.298C) of warming to the TCR, corresponding to 6.1% of the full TCR (s: 3.8%; range: 1.4%–13.9%). Moreover, variation in the physiological contribution to the TCR across models contributes disproportionately more to the intermodel spread of TCR estimates than it does to the mean. The largest contribution of plant physiology to CO2-forced warming—and the intermodel spread in warming—occurs over land, especially in forested regions. Ó 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Carbon dioxide; Climate change; Climate models; Earth (planet); Greenhouse gases; Physiology; Transient analysis; American meteorological societies; Copyright informations; Coupled Model Intercomparison Project; Earth system model; Near surface air temperature; Physiological effects; Physiological response; Stomatal conductance; Physiological models; air temperature; carbon cycle; carbon dioxide; climate effect; CMIP; concentration (composition); energy flux; greenhouse gas; physiological response; water flux
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171087
作者单位	Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Atmospheric Sciences, Department of Biology, University of Washington, Seattle, WA, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Earth and Planetary Science, University of California, Berkeley, Berkeley, CA, United States; Department of Atmospheric Sciences, School of Oceanography, University of Washington, Seattle, WA, United States; Department of Earth System Science, University of California, Irvine, Irvine, CA, United States
推荐引用方式 GB/T 7714	Zarakas C.M.,Swann A.L.S.,Laguë M.M.,et al. Plant physiology increases the magnitude and spread of the transient climate response to CO2 in CMIP6 earth system models[J],2020,33(19).
APA	Zarakas C.M.,Swann A.L.S.,Laguë M.M.,Armour K.C.,&Randerson J.T..(2020).Plant physiology increases the magnitude and spread of the transient climate response to CO2 in CMIP6 earth system models.Journal of Climate,33(19).
MLA	Zarakas C.M.,et al."Plant physiology increases the magnitude and spread of the transient climate response to CO2 in CMIP6 earth system models".Journal of Climate 33.19(2020).