DOI: 10.1002/grl.50481
论文题名: Thermospheric zonal mean winds and tides revealed by CHAMP
作者: Lieberman R.S. ; Akmaev R.A. ; Fuller-Rowell T.J. ; Doornbos E.
刊名: Geophysical Research Letters
ISSN: 0094-9020
EISSN: 1944-8751
出版年: 2013
卷: 40, 期: 10 起始页码: 2439
结束页码: 2443
语种: 英语
英文关键词: thermosphere
; tides
; winds
Scopus关键词: Atmosphere models
; Diurnal variation
; Global observation
; Higher-order
; thermosphere
; Tidal winds
; Westward flow
; Zonal means
; Tides
; Wind
; Wind effects
; Gravitational effects
; atmospheric modeling
; diurnal variation
; harmonic analysis
; thermosphere
; zonal wind
英文摘要: We present direct, global observations of longitudinally averaged CHAMP zonal winds gathered between 2003 and 2007. A diurnal variation dominates the global zonal wind. Westward flows are observed from the early morning through afternoon hours, while eastward flows peak in the evening. A semidiurnal harmonic is also present, with magnitudes that are approximately one third of the diurnal harmonic. The time mean wind indicates westward winds over much of the globe, with weak superrotation (+E, or eastward winds) that is symmetric about the equator during equinox, and confined to the winter hemisphere at solstice. Diurnal and time mean CHAMP winds agree fairly well with the Whole Atmosphere Model. Some differences are observed in the semidiurnal and higher-order tidal winds, that underscore the challenges of modeling the sources, sinks, and mean wind effects upon tides between the surface and 400 km. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879944017&doi=10.1002%2fgrl.50481&partnerID=40&md5=a167e4c772094c3dbdf9b31512c574be
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6284
Appears in Collections: 气候减缓与适应
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作者单位: GATS -Inc., 3360 Mitchell Lane, Boulder, CO 80301, United States
Recommended Citation:
Lieberman R.S.,Akmaev R.A.,Fuller-Rowell T.J.,et al. Thermospheric zonal mean winds and tides revealed by CHAMP[J]. Geophysical Research Letters,2013-01-01,40(10).