气候变化领域集成服务门户(CCPortal): How does the winter jet stream affect surface temperature; heat flux; and sea ice in the North Atlantic?

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DOI	10.1175/JCLI-D-19-0247.1
	How does the winter jet stream affect surface temperature; heat flux; and sea ice in the North Atlantic?
	Ma L.; Woollings T.; Williams R.G.; Smith D.; Dunstone N.
发表日期	2020
ISSN	0894-8755
起始页码	3711
结束页码	3730
卷号	33 期号:9
英文摘要	The role of the atmospheric jet stream in driving patterns of surface heat flux, changes in sea surface temperature, and sea ice fraction is explored for the winter North Atlantic. Seasonal time-scale ensemble hindcasts from the Met Office Hadley Centre are analyzed for each winter from 1980 to 2014, which for each year includes 40 ensemble members initialized at the start of November. The spread between ensemble members that develops during a season is interpreted to represent the ocean response to stochastic atmospheric variability. The seasonal coupling between the winter atmosphere and the ocean over much of the North Atlantic reveals anomalies in surface heat loss driving anomalies in the tendency of sea surface temperature. The atmospheric jet, defined either by its speed or latitude, strongly controls the winter pattern of air–sea latent and sensible heat flux anomalies, and subsequent sea surface temperature anomalies. On time scales of several months, the effect of jet speed is more pronounced than that of jet latitude on the surface ocean response, although the effect of jet latitude is important in altering the extent of the ocean subtropical and subpolar gyres. A strong jet or high jet latitude increases sea ice fraction over the Labrador Sea due to the enhanced transport of cold air from west Greenland, while sea ice fraction decreases along the east side of Greenland due either to warm air advection or a strong northerly wind along the east Greenland coast blowing surface ice away from the Fram Strait. © 2020 American Meteorological Society. For information regarding reuse of this content and general copyright information, consult the AMS Copyright Policy
英文关键词	Atmospheric movements; Ferroelectric RAM; Heat flux; Oceanography; Sea ice; Stochastic systems; Submarine geophysics; Surface properties; Surface waters; Atmospheric variability; Enhanced transports; Sea surface temperature (SST); Sea surface temperature anomalies; Sensible heat flux; Surface heat fluxes; Surface heat loss; Surface temperatures; Atmospheric temperature; ensemble forecasting; heat flux; jet; sea ice; seasonal variation; sensible heat flux; surface temperature; Arctic; Atlantic Ocean; Atlantic Ocean (North); Fram Strait
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/171335
作者单位	School of Environmental Sciences, University of Liverpool, Liverpool, United Kingdom; Department of Physics, University of Oxford, Oxford, United Kingdom; Met Office, Hadley Centre, Exeter, United Kingdom
推荐引用方式 GB/T 7714	Ma L.,Woollings T.,Williams R.G.,et al. How does the winter jet stream affect surface temperature; heat flux; and sea ice in the North Atlantic?[J],2020,33(9).
APA	Ma L.,Woollings T.,Williams R.G.,Smith D.,&Dunstone N..(2020).How does the winter jet stream affect surface temperature; heat flux; and sea ice in the North Atlantic?.Journal of Climate,33(9).
MLA	Ma L.,et al."How does the winter jet stream affect surface temperature; heat flux; and sea ice in the North Atlantic?".Journal of Climate 33.9(2020).