气候变化领域集成服务门户(CCPortal): Coupling of surface ocean heat and carbon perturbations over the subtropical cells under twenty-first century climate change

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DOI	10.1175/JCLI-D-19-1022.1
	Coupling of surface ocean heat and carbon perturbations over the subtropical cells under twenty-first century climate change
	Rodgers K.B.; Ishii M.; Frölicher T.L.; Schlunegger S.; Aumont O.; Toyama K.; Slater R.D.
发表日期	2020
ISSN	0894-8755
起始页码	10321
结束页码	10338
卷号	33 期号:23
英文摘要	It is well established that the ocean plays an important role in absorbing anthropogenic carbon Cant from the atmosphere. Under global warming, Earth system model simulations and theoretical arguments indicate that the capacity of the ocean to absorb Cant will be reduced, with this constituting a positive carbon–climate feedback. Here we apply a suite of sensitivity simulations with a comprehensive Earth system model to demonstrate that the surface waters of the shallow overturning structures (spanning 458S–458N) sustain nearly half of the global ocean carbon–climate feedback. The main results reveal a feedback that is initially triggered by warming but that amplifies over time as Cant invasion enhances the sensitivity of surface pCO2 to further warming, particularly in the warmer season. Importantly, this ‘‘heat–carbon feedback’’ mechanism is distinct from (and significantly weaker than) what one would expect from temperature-controlled solubility perturbations to pCO2 alone. It finds independent confirmation in an additional perturbation experiment with the same Earth system model. There mechanism denial is applied by disallowing the secular trend in the physical state of the ocean under climate change, while simultaneously allowing the effects of heating to impact sea surface pCO2 and thereby CO2 uptake. Reemergence of Cant along the equator within the shallow overturning circulation plays an important role in the heat–carbon feedback, with the decadal renewal time scale for thermocline waters modulating the feedback response. The results here for 458S–458N stand in contrast to what is found in the high latitudes, where a clear signature of a broader range of driving mechanisms is present. © 2020 American Meteorological Society
英文关键词	Carbon; Feedback; Global warming; Oceanography; Surface waters; Tropics; Anthropogenic carbon; Climate feedbacks; Driving mechanism; Earth system model; Feedback response; Overturning circulation; Sensitivity Simulation; Theoretical arguments; Climate models; carbon dioxide; carbon emission; climate change; climate feedback; global warming; surface water; twenty first century
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/171021
作者单位	Center for Climate Physics, Institute for Basic Science, Busan, South Korea; Pusan National University, Busan, South Korea; Oceanography and Geochemistry Research Department, Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, Japan; Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland; Oeschger Centre for Climate Change Research, University of Bern, Bern, Switzerland; Atmosphere and Ocean Sciences Program, Princeton University, Princeton, NJ, United States; Sorbonne University, UPMC, University of Paris-06-CNRS-IRD-MNHN, LOCEAN/IPSL, Paris, France
推荐引用方式 GB/T 7714	Rodgers K.B.,Ishii M.,Frölicher T.L.,et al. Coupling of surface ocean heat and carbon perturbations over the subtropical cells under twenty-first century climate change[J],2020,33(23).
APA	Rodgers K.B..,Ishii M..,Frölicher T.L..,Schlunegger S..,Aumont O..,...&Slater R.D..(2020).Coupling of surface ocean heat and carbon perturbations over the subtropical cells under twenty-first century climate change.Journal of Climate,33(23).
MLA	Rodgers K.B.,et al."Coupling of surface ocean heat and carbon perturbations over the subtropical cells under twenty-first century climate change".Journal of Climate 33.23(2020).