气候变化领域集成服务门户(CCPortal): Assessing Global and Local Radiative Feedbacks Based on AGCM Simulations for 1980

CCPortal

DOI	10.1029/2020GL088063
	Assessing Global and Local Radiative Feedbacks Based on AGCM Simulations for 1980–2014/2017
	Zhang R.; Wang H.; Fu Q.; Rasch P.J.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:12
英文摘要	We examine radiative feedbacks based on short-term climate variability by analyzing atmospheric general circulation model (AGCM) simulations, including Atmospheric Model Intercomparison Project within CMIP phase 6 (AMIP6) with known effective radiative forcing (ERF) for 1980–2014 and one with zero ERF for 1980–2017. We first verify the Kernel-Gregory feedback calculation by showing that both clear-sky radiative fluxes and all-sky radiative feedbacks from the kernel method agree with model simulations. We find that global-mean net feedback for 1980–2017/2014 is −2 W m−2 K−1, about twice the feedback estimated for long-term warming (4 × CO2) experiments. This difference is mainly caused by a near-zero global-mean net cloud feedback for 1980–2017/2014. We show that the lapse rate feedback for 1980–2017/2014 is the largest contributor to the amplified temperature change over the three poles (Arctic, Antarctic, and Tibetan Plateau), followed by surface albedo feedback and Planck feedback deviation from its global mean. Except for a higher surface albedo feedback in Antarctic, other feedbacks are similar between Arctic and Antarctic. ©2020. The Authors.
英文关键词	Atmospheric radiation; Solar radiation; Atmospheric general circulation models; Atmospheric model intercomparison projects; Climate variability; Model simulation; Radiative fluxes; Radiative forcings; Temperature changes; Tibetan Plateau; Climate models; albedo; assessment method; atmospheric general circulation model; clear sky; climate variation; CMIP; radiative forcing; Arctic and Antarctic; Qinghai-Xizang Plateau
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170239
作者单位	Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Zhang R.,Wang H.,Fu Q.,等. Assessing Global and Local Radiative Feedbacks Based on AGCM Simulations for 1980–2014/2017[J],2020,47(12).
APA	Zhang R.,Wang H.,Fu Q.,&Rasch P.J..(2020).Assessing Global and Local Radiative Feedbacks Based on AGCM Simulations for 1980–2014/2017.Geophysical Research Letters,47(12).
MLA	Zhang R.,et al."Assessing Global and Local Radiative Feedbacks Based on AGCM Simulations for 1980–2014/2017".Geophysical Research Letters 47.12(2020).