气候变化领域集成服务门户(CCPortal): Seasonal Asymmetries in the Lag between Insolation and Surface Temperature

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DOI	10.1175/JCLI-D-19-0329.1
	Seasonal Asymmetries in the Lag between Insolation and Surface Temperature
	Donohoe A.; Dawson E.; McMurdie L.; Battisti D.S.; Rhines A.
发表日期	2020
ISSN	0894-8755
起始页码	3921
结束页码	3945
卷号	33 期号:10
英文摘要	We analyze the temporal structure of the climatological seasonal cycle in surface air temperature across the globe. We find that, over large regions of Earth, the seasonal cycle of surface temperature departs from an annual harmonic: the duration of fall and spring differ by as much as 2 months. We characterize this asymmetry by the metric ASYM, defined as the phase lag of the seasonal maximum temperature relative to the summer solstice minus the phase lag of the seasonal minimum temperature relative to winter solstice. We present a global analysis of ASYM from weather station data and atmospheric reanalysis and find that ASYM is well represented in the reanalysis. ASYM generally features positive values over land and negative values over the ocean, indicating that spring has a longer duration over the land domain whereas fall has a longer duration over the ocean. However, ASYM also features more positive values over North America compared to Europe and negative values in the polar regions over ice sheets and sea ice. Understanding the root cause of the climatological ASYM will potentially further our understanding of controls on the seasonal cycle of temperature and its future/past changes. We explore several candidate mechanisms to explain the spatial structure of ASYM including 1) modification of the seasonal cycle of surface solar radiation by the seasonal evolution of cloud thickness, 2) differences in the seasonal cycle of the atmospheric boundary layer depth over ocean and over land, and 3) temperature advection by the seasonally evolving atmospheric circulation. © 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy (www.ametsoc.org/PUBSReuseLicenses).
英文关键词	Atmospheric boundary layer; Atmospheric structure; Sea ice; Solar radiation; Surface properties; Atmospheric boundary layer depths; Atmospheric circulation; Atmospheric reanalysis; Candidate mechanisms; Minimum temperatures; Surface air temperatures; Surface solar radiation; Surface temperatures; Atmospheric temperature; air temperature; atmospheric circulation; boundary layer; climatology; ice sheet; polar region; sea ice; seasonal variation; summer; surface temperature; Europe; North America
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171307
作者单位	Polar Science Center, Applied Physics Laboratory, University of Washington, Seattle, WA, United States; Stanford University, Palo Alto, CA, United States; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Netflix, Los Gatos, CA, United States
推荐引用方式 GB/T 7714	Donohoe A.,Dawson E.,McMurdie L.,et al. Seasonal Asymmetries in the Lag between Insolation and Surface Temperature[J],2020,33(10).
APA	Donohoe A.,Dawson E.,McMurdie L.,Battisti D.S.,&Rhines A..(2020).Seasonal Asymmetries in the Lag between Insolation and Surface Temperature.Journal of Climate,33(10).
MLA	Donohoe A.,et al."Seasonal Asymmetries in the Lag between Insolation and Surface Temperature".Journal of Climate 33.10(2020).