气候变化领域集成服务门户(CCPortal): On the Nature of the Arctic's Positive Lapse-Rate Feedback

CCPortal

DOI	10.1029/2020GL091109
	On the Nature of the Arctic's Positive Lapse-Rate Feedback
	Boeke R.C.; Taylor P.C.; Sejas S.A.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	Radiative energy fluxes exiting the atmosphere toward the surface and to space are sensitive to the vertical structure of temperature. Under anthropogenic forcing, this sensitivity gives rise to the lapse-rate feedback. Negative in the tropics and positive in the Arctic, studies argue that the lapse-rate feedback is a primary cause of Arctic Amplification. While the negative tropical lapse-rate feedback is understood mechanistically, the mechanics of the positive Arctic lapse-rate feedback are less clear. Stable stratification is a necessary condition for the positive Arctic lapse-rate feedback; however, does stable stratification place any further constraint on the feedback? We find that the magnitude, spatial variability, seasonality, and intermodel spread in the Arctic lapse-rate feedback are dictated by the surface temperature change and not the degree of stable stratification. Our results support the multiprocess perspective of the Arctic lapse-rate feedback, whereby the mechanisms responsible for the nonuniform warming profile determine the lapse-rate feedback. Published 2020. This article is a U.S. Government work and is in the public domain in the USA.
英文关键词	Earth sciences; Geophysics; Anthropogenic forcing; Public domains; Radiative energy flux; Seasonality; Spatial variability; Stable stratification; Surface temperature changes; Vertical structures; Tropics
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/169253
作者单位	Science Systems and Applications Inc., Hampton, VA, United States; NASA Langley Research Center, Climate Science Branch, Hampton, VA, United States
推荐引用方式 GB/T 7714	Boeke R.C.,Taylor P.C.,Sejas S.A.. On the Nature of the Arctic's Positive Lapse-Rate Feedback[J],2021,48(1).
APA	Boeke R.C.,Taylor P.C.,&Sejas S.A..(2021).On the Nature of the Arctic's Positive Lapse-Rate Feedback.Geophysical Research Letters,48(1).
MLA	Boeke R.C.,et al."On the Nature of the Arctic's Positive Lapse-Rate Feedback".Geophysical Research Letters 48.1(2021).