气候变化领域集成服务门户(CCPortal): Sea ice and atmospheric circulation shape the high-latitude lapse rate feedback

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DOI	10.1038/s41612-020-00146-7
	Sea ice and atmospheric circulation shape the high-latitude lapse rate feedback
	Feldl N.; Po-Chedley S.; Singh H.K.A.; Hay S.; Kushner P.J.
发表日期	2020
ISSN	23973722
卷号	3 期号:1
英文摘要	Arctic amplification of anthropogenic climate change is widely attributed to the sea-ice albedo feedback, with its attendant increase in absorbed solar radiation, and to the effect of the vertical structure of atmospheric warming on Earth’s outgoing longwave radiation. The latter lapse rate feedback is subject, at high latitudes, to a myriad of local and remote influences whose relative contributions remain unquantified. The distinct controls on the high-latitude lapse rate feedback are here partitioned into “upper” and “lower” contributions originating above and below a characteristic climatological isentropic surface that separates the high-latitude lower troposphere from the rest of the atmosphere. This decomposition clarifies how the positive high-latitude lapse rate feedback over polar oceans arises primarily as an atmospheric response to local sea ice loss and is reduced in subpolar latitudes by an increase in poleward atmospheric energy transport. The separation of the locally driven component of the high-latitude lapse rate feedback further reveals how it and the sea-ice albedo feedback together dominate Arctic amplification as a coupled mechanism operating across the seasonal cycle. © 2020, The Author(s).
语种	英语
scopus关键词	albedo; amplification; atmospheric circulation; longwave radiation; sea ice; solar radiation; troposphere; Arctic
来源期刊	npj Climate and Atmospheric Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178026
作者单位	Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA, United States; Program for Climate Model Diagnosis and Intercomparison (PCMDI), Lawrence Livermore National Laboratory, Livermore, CA, United States; School of Earth and Ocean Sciences, University of Victoria, Victoria, BC, Canada; Department of Physics, University of Toronto, Toronto, ON, Canada
推荐引用方式 GB/T 7714	Feldl N.,Po-Chedley S.,Singh H.K.A.,et al. Sea ice and atmospheric circulation shape the high-latitude lapse rate feedback[J],2020,3(1).
APA	Feldl N.,Po-Chedley S.,Singh H.K.A.,Hay S.,&Kushner P.J..(2020).Sea ice and atmospheric circulation shape the high-latitude lapse rate feedback.npj Climate and Atmospheric Science,3(1).
MLA	Feldl N.,et al."Sea ice and atmospheric circulation shape the high-latitude lapse rate feedback".npj Climate and Atmospheric Science 3.1(2020).