气候变化领域集成服务门户(CCPortal): A refined model for the Earth’s global energy balance

CCPortal

DOI	10.1007/s00382-019-04825-x
	A refined model for the Earth’s global energy balance
	Ceppi P.; Gregory J.M.
发表日期	2019
ISSN	0930-7575
起始页码	4781
结束页码	4797
卷号	53 期号:2020-07-08
英文摘要	A commonly-used model of the global radiative budget assumes that the radiative response to forcing, R, is proportional to global surface air temperature T, R= λT. Previous studies have highlighted two unresolved issues with this model: first, the feedback parameter λ depends on the forcing agent; second, λ varies with time. Here, we investigate the factors controlling R in two atmosphere–slab ocean climate models subjected to a wide range of abrupt climate forcings. It is found that R scales not only with T, but also with the large-scale tropospheric stability S (defined here as the estimated inversion strength area-averaged over ocean regions equatorward of 50∘). Positive S promotes negative R, mainly through shortwave cloud and lapse-rate changes. A refined model of the global energy balance is proposed that accounts for both temperature and stability effects. This refined model quantitatively explains (1) the dependence of climate feedbacks on forcing agent (or equivalently, differences in forcing efficacy), and (2) the time evolution of feedbacks in coupled climate model experiments. Furthermore, a similar relationship between R and S is found in observations compared with models, lending confidence that the refined energy balance model is applicable to the real world. © 2019, The Author(s).
英文关键词	Climate change; Climate feedbacks; Climate sensitivity; Clouds; Radiative forcing
语种	英语
scopus关键词	climate change; cloud radiative forcing; energy balance; feedback mechanism; sensitivity analysis; temperature effect
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145951
作者单位	Grantham Institute, Imperial College London, Exhibition Road, London, United Kingdom; National Centre for Atmospheric Science, University of Reading, Earley Gate, Reading, United Kingdom; Met Office Hadley Centre, Exeter, United Kingdom
推荐引用方式 GB/T 7714	Ceppi P.,Gregory J.M.. A refined model for the Earth’s global energy balance[J],2019,53(2020-07-08).
APA	Ceppi P.,&Gregory J.M..(2019).A refined model for the Earth’s global energy balance.Climate Dynamics,53(2020-07-08).
MLA	Ceppi P.,et al."A refined model for the Earth’s global energy balance".Climate Dynamics 53.2020-07-08(2019).