气候变化领域集成服务门户(CCPortal): Connecting Direct Effects of CO2 Radiative Forcing to Ocean Heat Uptake and Circulation

CCPortal

DOI	10.1029/2018MS001544
	Connecting Direct Effects of CO2 Radiative Forcing to Ocean Heat Uptake and Circulation
	Menzel M.E.; Merlis T.M.
发表日期	2019
ISSN	19422466
起始页码	2163
结束页码	2176
卷号	11 期号:7
英文摘要	The ocean's response to direct atmospheric effects of increased carbon dioxide's (CO2) radiative forcing is examined. These direct effects are defined as the climate changes that result from forcing on a fast time scale of about a year, independent of the slower surface warming that the forcing also provokes. To evaluate how these direct effects impact ocean heat uptake and circulation, output of atmospheric general circulation model (GCM) simulations are used to force an ocean GCM with comprehensive boundary conditions. Perturbation simulations with the prescribed response to a quadrupling of atmospheric CO2 include altered surface winds, freshwater fluxes, downwelling shortwave radiation, and downwelling longwave cloud radiative effect. The perturbation simulations show that the intensification and poleward shift of surface winds, particularly in the Southern Ocean, strengthen the shallow overturning circulation in the tropical Pacific and deep overturning in the Atlantic. This, in turn, has a cooling effect on the global ocean at shallow depths. A two-layer energy balance model, designed to capture transient global mean climate change, is adapted to account for the altered ocean heat uptake from direct effects. The direct change in global mean ocean heat uptake is a decrease of about 0.3 W/m2 for quadrupling of CO2, offsetting about 5% of the surface longwave forcing. © 2019. The Authors.
语种	英语
scopus关键词	Atmospheric radiation; Carbon dioxide; Climate models; Oceanography; Atmospheric effects; Atmospheric general circulation models; Cloud radiative effects; Energy balance models; Ocean heat uptake; Overturning circulation; Radiative forcings; Short-wave radiation; Climate change; atmosphere-ocean coupling; atmospheric general circulation model; carbon dioxide; climate change; climate forcing; global warming; heat transfer; ocean; oceanic circulation; perturbation; radiative forcing; timescale
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156964
作者单位	Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, QC, Canada; Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, United States
推荐引用方式 GB/T 7714	Menzel M.E.,Merlis T.M.. Connecting Direct Effects of CO2 Radiative Forcing to Ocean Heat Uptake and Circulation[J],2019,11(7).
APA	Menzel M.E.,&Merlis T.M..(2019).Connecting Direct Effects of CO2 Radiative Forcing to Ocean Heat Uptake and Circulation.Journal of Advances in Modeling Earth Systems,11(7).
MLA	Menzel M.E.,et al."Connecting Direct Effects of CO2 Radiative Forcing to Ocean Heat Uptake and Circulation".Journal of Advances in Modeling Earth Systems 11.7(2019).