气候变化领域集成服务门户(CCPortal): Stratospheric and tropospheric flux contributions to the polar cap energy budgets

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DOI	10.1175/JCLI-D-20-0722.1
	Stratospheric and tropospheric flux contributions to the polar cap energy budgets
	Cardinale C.J.; Rose B.E.J.; Lang A.L.; Donohoe A.
发表日期	2021
ISSN	08948755
起始页码	4261
结束页码	4278
卷号	34 期号:11
英文摘要	The flux of moist static energy into the polar regions plays a key role in the energy budget and climate of the polar regions. While usually studied from a vertically integrated perspective (Fwall), this analysis examines its vertical structure, using the NASA-MERRA-2 reanalysis to compute climatological and anomalous fluxes of sensible, latent, and potential energy across 708N and 658S for the period 1980–2016. The vertical structure of the climatological flux is bimodal, with peaks in the middle to lower troposphere and middle to upper stratosphere. The near-zero flux at the tropopause defines the boundary between stratospheric (Fstrat) and tropospheric (Ftrop) contributions to Fwall. Especially at 708N, Fstrat is found to be important to the climatology and variability of Fwall, contributing 20.9 W m22 to Fwall (19% of Fwall) during the winter and explaining 23% of the variance of Fwall. During winter, an anomalous poleward increase in Fstrat preceding a sudden stratospheric warming is followed by an increase in outgoing longwave radiation anomalies, with little influence on the surface energy budget of the Arctic. Conversely, a majority of the energy input by an anomalous poleward increase in Ftrop goes toward warming the Arctic surface. Overall, Ftrop is found to be a better metric than Fwall for evaluating the influence of atmospheric circulations on the Arctic surface climate. © 2021 American Meteorological Society.
英文关键词	Arctic; Atmospheric circulation; Energy budget/ balance; Energy transport; Interannual variability; Stratosphere-troposphere coupling
语种	英语
scopus关键词	Climatology; NASA; Potential energy; Troposphere; Atmospheric circulation; Lower troposphere; Moist static energy; Outgoing longwave radiation; Sudden stratospheric warming; Surface climate; Surface energy budget; Vertical structures; Budget control
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/178544
作者单位	Department of Atmospheric and Environmental Sciences, University at Albany, State University of New York, Albany, NY, United States; Applied Physics Laboratory, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Cardinale C.J.,Rose B.E.J.,Lang A.L.,et al. Stratospheric and tropospheric flux contributions to the polar cap energy budgets[J],2021,34(11).
APA	Cardinale C.J.,Rose B.E.J.,Lang A.L.,&Donohoe A..(2021).Stratospheric and tropospheric flux contributions to the polar cap energy budgets.Journal of Climate,34(11).
MLA	Cardinale C.J.,et al."Stratospheric and tropospheric flux contributions to the polar cap energy budgets".Journal of Climate 34.11(2021).