DOI: 10.1029/2012JD018653
论文题名: Diurnal variation of gravity wave momentum flux and its forcing on the diurnal tide
作者: Liu A.Z. ; Lu X. ; Franke S.J.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 4 起始页码: 1668
结束页码: 1678
语种: 英语
英文关键词: diurnal tide
; gravity waves
; momentum flux
Scopus关键词: Gravity waves
; Momentum
; Radar
; Diurnal tides
; Diurnal variation
; General circulation model
; Gravity wave momentum
; Momentum flux
; Phase relationships
; Satellite observations
; Seasonal variation
; Radar measurement
; air-sea interaction
; amplitude
; atmospheric forcing
; diurnal variation
; flux measurement
; general circulation model
; gravity wave
; magnitude
; momentum
; Rayleigh number
; tidal cycle
; Hawaii [United States]
; Hawaiian Islands
; Maui
; United States
英文摘要: The diurnal variation of gravity wave (GW) momentum flux is derived from the 5 years of meteor radar wind measurements at Maui, Hawaii. The amplitude and phase relationships between the GW forcing and the diurnal tide are analyzed by calculating their equivalent Rayleigh frictions. The results show that the GW momentum flux is clearly modulated by the diurnal tide. The forcing from the momentum flux convergence has strong effects on both the amplitude and phase of the diurnal tide. They can reach 80 ms - 1 day - 1 for the amplitude and 15 h day - 1 for the phase. The GW forcing tends to increase the diurnal tide amplitude above 90 km but has a small damping effect below 90 km. It tends to increase the phase of the diurnal tide throughout all altitudes. Seasonal variations of the GW forcing exist, which result in differences in their effects on the diurnal tide. The magnitudes of the forcing are in agreement with recent results from satellite observations but are much larger than values used in general circulation models. This work also demonstrates that meteor radar measurements can provide a valuable data set for the study of GW-tide interactions. Key PointsDerived diurnal variation of gravity wave momentum fluxEstablished the relationship between gravity wave forcing and diurnal tideMeteor radar can be used for the study of gravity wave tide interactions © 2012. American Geophysical Union. All Rights Reserved. 资助项目: AGS-1110199
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63895
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: Electronic Information School, Wuhan University, Wuhan, China; Department of Physical Sciences, Embry-Riddle Aeronautical University, 600 South Clyde Morris Boulevard, Daytona Beach, FL 32114, United States; Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, United States
Recommended Citation:
Liu A.Z.,Lu X.,Franke S.J.. Diurnal variation of gravity wave momentum flux and its forcing on the diurnal tide[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(4)