DOI: 10.1175/JCLI-D-15-0267.1
Scopus记录号: 2-s2.0-84959484872
论文题名: Stationary wave interference and its relation to tropical convection and Arctic warming
作者: Goss M. ; Feldstein S.B. ; Lee S.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 4 起始页码: 1369
结束页码: 1389
语种: 英语
Scopus关键词: Lakes
; Sea ice
; Arctic oscillations
; Arctic surface air temperature
; Constructive interference
; Destructive interference
; Northern Hemispheres
; Outgoing longwave radiation
; Stratospheric polar vortex
; Tropical convection
; Climate change
; amplitude
; Arctic Oscillation
; atmospheric convection
; climatology
; eddy
; Northern Hemisphere
; polar vortex
; standing wave
; Arctic
英文摘要: The interference between transient eddies and climatological stationary eddies in the Northern Hemisphere is investigated. The amplitude and sign of the interference is represented by the stationary wave index (SWI), which is calculated by projecting the daily 300-hPa streamfunction anomaly field onto the 300-hPa climatological stationary wave. ERA-Interim data for the years 1979 to 2013 are used. The amplitude of the interference peaks during boreal winter. The evolution of outgoing longwave radiation, Arctic temperature, 300-hPa streamfunction, 10-hPa zonal wind, Arctic sea ice concentration, and the Arctic Oscillation (AO) index are examined for days of large SWI values during the winter. Constructive interference during winter tends to occur about one week after enhanced warm pool convection and is followed by an increase in Arctic surface air temperature along with a reduction of sea ice in the Barents and Kara Seas. The warming of the Arctic does occur without prior warm pool convection, but it is enhanced and prolonged when constructive interference occurs in concert with enhanced warm pool convection. This is followed two weeks later by a weakening of the stratospheric polar vortex and a decline of the AO. All of these associations are reversed in the case of destructive interference. Potential climate change implications are briefly discussed. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50335
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Meteorology, The Pennsylvania State University, University Park, Pennsylvania, United States; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea
Recommended Citation:
Goss M.,Feldstein S.B.,Lee S.. Stationary wave interference and its relation to tropical convection and Arctic warming[J]. Journal of Climate,2016-01-01,29(4)