DOI: 10.1002/2014GL061273
论文题名: Neutral density variation from specular meteor echo observations spanning one solar cycle
作者: Stober G. ; Matthias V. ; Brown P. ; Chau J.L.
刊名: Geophysical Research Letters
ISSN: 0094-9744
EISSN: 1944-9475
出版年: 2014
卷: 41, 期: 19 起始页码: 6919
结束页码: 6925
语种: 英语
英文关键词: density trend
; neutral air density
; solar cycle
Scopus关键词: Air
; Ionosphere
; Radar
; Air density
; Long-term trend
; Meteor radars
; Neutral densities
; Simple modeling
; Solar cycle
; Solar-cycle effects
; Stable Configuration
; Solar energy
; altitude
; density
; electromagnetic field
; estimation method
; meteor
; radar
; solar cycle
; sound propagation
; Canada
英文摘要: Specular meteor radars have provided essential information about the mesospheric/lower thermosphere (MLT) dynamics. The Canadian Meteor Orbit Radar has been conducting continuous meteor echo observations in a fixed, stable configuration since 2002. Here we present estimates of the neutral air density variations derived from observations of the meteor peak flux altitude. Using a simple model assuming a linear trend and a sinusoidal solar cycle we derived a trend of a decreasing neutral density of 5.8 ± 1.1% per decade at approximately 91 km altitude and an amplitude across the most recent solar cycle, the solar cycle of 2.4 ± 0.7% for solar cycle 23/24. The long-term trend of decreasing neutral air density in the MLT is in good agreement with the model results from Akmaev et al. (2006). Key Points Estimation of neutral air density variations spanning one solar cycleDetermination of solar cycle effects due to F10.7 on MLT neutral air densityEstimation of long-term trend in neutral air density in the MLT ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911450455&doi=10.1002%2f2014GL061273&partnerID=40&md5=2153b55606d90145b27284906a06f567
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7008
Appears in Collections: 气候减缓与适应
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作者单位: Leibniz Institute of Atmospheric Physics, Rostock University, Kühlungsborn, Germany
Recommended Citation:
Stober G.,Matthias V.,Brown P.,et al. Neutral density variation from specular meteor echo observations spanning one solar cycle[J]. Geophysical Research Letters,2014-01-01,41(19).