DOI: 10.1002/jgrd.50268
论文题名: Changes in mesospheric dynamics at 78°N, 16°E and 70°N, 19°E: 2001-2012
作者: Hall C.M. ; Tsutsumi M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 7 起始页码: 2689
结束页码: 2701
语种: 英语
Scopus关键词: Brewer-Dobson circulation
; Mesospheric dynamics
; Mesospheric winds
; Meteor wind radar
; Parameterized
; Stratospheric warmings
; Systematic changes
; Total solar irradiance
; Solar energy
; atmospheric dynamics
; irradiance
; jet
; mesosphere
; radar
; solar cycle
; solar radiation
; stratosphere
; warming
; zonal flow
; Arctic
; Norway
; Svalbard
; Svalbard and Jan Mayen
英文摘要: Mesospheric wind data from meteor wind radars situated on Svalbard (78°N, 16°E) and the Norwegian mainland (70°N, 19°E) are examined for evidence of systematic change during the interval 2001-2012. For both locations, we find changes that suggest a strengthening of the summer westward jet, a weakening of the local winter eastward flow and, yet at the same time, weak evidence for any significant corresponding trend in the winter poleward flow. There is also a suggestion of an increase in the altitude of the summer polar jet, but more data will be required to confirm this. The main finding of a strengthening zonal flow is consistent with earlier studies and also with a contemporary scenario of progressive strengthening of the Brewer-Dobson circulation. We show that inclusion of sudden stratospheric warmings strongly influences trends. There is no obvious causality between the changes detected over the 2001-2012 time interval and the solar cycle parameterized by total solar irradiance. © 2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63828
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Tromsø Geophysical Observatory, University of Tromsø, Tromsø, Norway; National Institute of Polar Research, Tokyo, Japan
Recommended Citation:
Hall C.M.,Tsutsumi M.. Changes in mesospheric dynamics at 78°N, 16°E and 70°N, 19°E: 2001-2012[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(7)