DOI: 10.1002/grl.50125
论文题名: Day-to-day ionospheric variability due to lower atmosphere perturbations
作者: Liu H.-L. ; Yudin V.A. ; Roble R.G.
刊名: Geophysical Research Letters
ISSN: 0094-9292
EISSN: 1944-9023
出版年: 2013
卷: 40, 期: 4 起始页码: 665
结束页码: 670
语种: 英语
英文关键词: atmosphere coupling
; ionosphere short-term variability
; tides
Scopus关键词: Geomagnetism
; Ionospheric measurement
; Tides
; Day-to-day variability
; General circulation model
; Geomagnetic activities
; Geomagnetic conditions
; Ionospheric variability
; Research and application
; Thermosphere-ionosphere
; Whole atmosphere community climate models
; Ionosphere
; climate modeling
; climate variation
; general circulation model
; geomagnetism
; ionosphere
; simulation
; solar radiation
; tide
; wave property
英文摘要: Ionospheric day-to-day variability is a ubiquitous feature, even in the absence of appreciable geomagnetic activities. Although meteorological perturbations have been recognized as an important source of the variability, it is not well represented in previous modeling studies and the mechanism is not well understood. This study demonstrates that the thermosphere-ionosphere- mesosphere-electrodynamics general circulation model (TIME-GCM) constrained in the stratosphere and mesosphere by the hourly whole atmosphere community climate model (WACCM) simulations is capable of reproducing observed features of day-to-day variability in the thermosphere-ionosphere. Realistic weather patterns in the lower atmosphere in WACCM were specified by Modern Era Retrospective Reanalysis for Research and Application (MERRA). The day-to-day variations in mean zonal wind, migrating and nonmigrating tides in the thermosphere, vertical and zonal E × B drifts, and ionosphere F2 layer peak electron density (NmF2) are examined. The standard deviations of the drifts and NmF2 show local time and longitudinal dependence that compare favorably with observations. Their magnitudes are 50% or more of those from observations. The day-to-day thermosphere and ionosphere variability in the model is primarily caused by the perturbations originated in lower atmosphere, since the model simulation is under constant solar minimum and low geomagnetic conditions. Key Points Novel model capable of producing large day-to-day ionosphere variability Short-term wave variability leads to day-to-day ionosphere variability Predictability of ionosphere/thermosphere affected by lower atmosphere waves ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878194194&doi=10.1002%2fgrl.50125&partnerID=40&md5=3685cf237b0079cd8825ae5c6311c55a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6556
Appears in Collections: 气候减缓与适应
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作者单位: High Altitude Observatory, National Center for Atmospheric Research, P.O. Box 3000, Boulder, CO 80307-3000, United States
Recommended Citation:
Liu H.-L.,Yudin V.A.,Roble R.G.. Day-to-day ionospheric variability due to lower atmosphere perturbations[J]. Geophysical Research Letters,2013-01-01,40(4).