气候变化领域集成服务门户(CCPortal): Forcing Dependence of Atmospheric Lapse Rate Changes Dominates Residual Polar Warming in Solar Radiation Management Climate Scenarios

CCPortal

DOI	10.1029/2020GL087929
	Forcing Dependence of Atmospheric Lapse Rate Changes Dominates Residual Polar Warming in Solar Radiation Management Climate Scenarios
	Henry M.; Merlis T.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:15
英文摘要	Simulations of solar radiation management (SRM) geoengineering using comprehensive general circulation models show a residual surface warming at high latitudes. Previous work attributes this to the difference in forcing structure between the increase in greenhouse gases and decrease in insolation, but this neglects the role of the induced reduction in atmospheric energy transport. Here we show that the difference in vertical structure of temperature change between increasing CO2, decreasing insolation, and decreasing atmospheric energy transport is the dominant reason for the residual near-surface warming at high latitudes. A single-column model (SCM) is used to decompose the high-latitude temperature change and shows the importance of the enhanced near-surface warming from the CO2 increase in explaining the residual polar warming. This suite of models invites caution when attributing high-latitude surface temperature changes to the lapse rate feedback, as various forcings and nonlocal processes affect the vertical structure of temperature change differently. © 2020. The Authors.
英文关键词	Atmospheric movements; Atmospheric structure; Carbon dioxide; Greenhouse gases; Incident solar radiation; Atmospheric energy; Climate scenarios; General circulation model; Radiation management; Single-column model; Surface temperature changes; Temperature changes; Vertical structures; Atmospheric temperature; atmospheric lapse rate; carbon dioxide; energy balance; engineering geology; general circulation model; polar region; solar radiation; surface temperature
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/170030
作者单位	Department of Mathematics, University of Exeter, Exeter, United Kingdom; Department of Atmospheric and Oceanic Sciences, McGill University, Montreal, QC, Canada
推荐引用方式 GB/T 7714	Henry M.,Merlis T.M.. Forcing Dependence of Atmospheric Lapse Rate Changes Dominates Residual Polar Warming in Solar Radiation Management Climate Scenarios[J],2020,47(15).
APA	Henry M.,&Merlis T.M..(2020).Forcing Dependence of Atmospheric Lapse Rate Changes Dominates Residual Polar Warming in Solar Radiation Management Climate Scenarios.Geophysical Research Letters,47(15).
MLA	Henry M.,et al."Forcing Dependence of Atmospheric Lapse Rate Changes Dominates Residual Polar Warming in Solar Radiation Management Climate Scenarios".Geophysical Research Letters 47.15(2020).