DOI: 10.1175/JCLI-D-13-00445.1
Scopus记录号: 2-s2.0-84898046325
论文题名: On the identification of the downward propagation of arctic stratospheric climate change over recent decades
作者: Ivy D.J. ; Solomon S. ; Thompson D.W.J.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 8 起始页码: 2789
结束页码: 2799
语种: 英语
Scopus关键词: Climate change
; Ozone
; Upper atmosphere
; Vortex flow
; Arctic temperature
; Dynamical coupling
; Geo-potential heights
; Interannual time scale
; Lowermost stratosphere
; Stratospheric temperature
; Stratospheric vortex
; Stratospheric warmings
; Troposphere
; air temperature
; arctic environment
; climate change
; geopotential
; ozone
; stratosphere
; Antarctica
; Arctic
英文摘要: Dynamical coupling between the stratospheric and tropospheric circumpolar circulations in the Arctic has been widely documented on month-to-month and interannual time scales, but not on longer time scales. In the Antarctic, both short-and long-term coupling extending from the stratosphere to the surface has been identified. In this study, changes in Arctic temperature, geopotential height, and ozone observed since the satellite era began in 1979 are examined, comparing dynamically quiescent years in which major sudden stratospheric warmings did not occur to all years. It is shown that this approach clarifies the behavior for years without major warmings and that dynamically quiescent years are marked by a strengthening of the Arctic polar vortex over the past 30 years. The associated declines in stratospheric temperatures, geopotential height, and ozone are qualitatively similar to those obtained in the Antarctic (albeit weaker), and propagate downward into the Arctic lowermost stratosphere during late winter and early spring. In sharp contrast to the Antarctic, the strengthening of the Arctic stratospheric vortex appears to originate at a higher altitude, and the propagation to the Arctic troposphere is both very limited and confined to the uppermost troposphere, even when only dynamically quiescent years are considered in the analysis. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51370
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States
Recommended Citation:
Ivy D.J.,Solomon S.,Thompson D.W.J.. On the identification of the downward propagation of arctic stratospheric climate change over recent decades[J]. Journal of Climate,2014-01-01,27(8)