DOI: 10.1002/2014GL061421
论文题名: Solar wind-driven geopotential height anomalies originate in the Antarctic lower troposphere
作者: Lam M.M. ; Chisham G. ; Freeman M.P.
刊名: Geophysical Research Letters
ISSN: 0094-9776
EISSN: 1944-9507
出版年: 2014
卷: 41, 期: 18 起始页码: 6509
结束页码: 6514
语种: 英语
英文关键词: global atmospheric electric circuit
; Mansurov effect
; polar meteorology
; solar variability
; Sun-weather connection
; tropospheric clouds
Scopus关键词: Electric lines
; Electric network analysis
; Networks (circuits)
; Precipitation (meteorology)
; Radiation effects
; Solar wind
; Atmospheric research reanalysis
; Geopotential height anomalies
; Global atmospheric electric circuit
; Interplanetary magnetic fields
; Mansurov effect
; National centers for environmental predictions
; Solar variability
; Tropospheric clouds
; Troposphere
; geopotential
; magnetic field
; precipitation (climatology)
; solar wind
; tropopause
; troposphere
; ultraviolet radiation
; Antarctica
英文摘要: We use National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis data to estimate the altitude and time lag dependence of the correlation between the interplanetary magnetic field component, By , and the geopotential height anomaly above Antarctica. The correlation is most statistically significant within the troposphere. The peak in the correlation occurs at greater time lags at the tropopause (∼6-8 days) and in the midtroposphere (∼4 days) than in the lower troposphere (∼1 day). This supports a mechanism involving the action of the global atmospheric electric circuit, modified by variations in the solar wind, on lower tropospheric clouds. The increase in time lag with increasing altitude is consistent with the upward propagation by conventional atmospheric processes of the solar wind-induced variability in the lower troposphere. This is in contrast to the downward propagation of atmospheric effects to the lower troposphere from the stratosphere due to solar variability-driven mechanisms involving ultraviolet radiation or energetic particle precipitation. Key PointsSolar-driven ionospheric potential changes affect pressure in polar troposphereLocation and timescale suggest involvement of cloud microphysicsFast tropospheric response contrasts to UV and particle precipitation mechanisms © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911191754&doi=10.1002%2f2014GL061421&partnerID=40&md5=6b91ed7af5e8a6c1fa569b7aec40051b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7040
Appears in Collections: 气候减缓与适应
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作者单位: British Antarctic Survey, Natural Environment Research Council, Cambridge, United Kingdom
Recommended Citation:
Lam M.M.,Chisham G.,Freeman M.P.. Solar wind-driven geopotential height anomalies originate in the Antarctic lower troposphere[J]. Geophysical Research Letters,2014-01-01,41(18).