DOI: 10.1002/2016JD025699
论文题名: A stationary phase solution for mountain waves with application to mesospheric mountain waves generated by Auckland Island
作者: Broutman D. ; Eckermann S.D. ; Knight H. ; Ma J.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2017
卷: 122, 期: 2 起始页码: 699
结束页码: 711
语种: 英语
英文关键词: mountain waves
; stationary phase method
Scopus关键词: atmospheric wave
; geometry
; gravity wave
; hydrostatic pressure
; mesosphere
; mountain environment
; numerical method
; phase transition
; refraction
; Auckland Islands
英文摘要: A relatively general stationary phase solution is derived for mountain waves from localized topography. It applies to hydrostatic, nonhydrostatic, or anelastic dispersion relations, to arbitrary localized topography, and to arbitrary smooth vertically varying background temperature and vector wind profiles. A simple method is introduced to compute the ray Jacobian that quantifies the effects of horizontal geometrical spreading in the stationary phase solution. The stationary phase solution is applied to mesospheric mountain waves generated by Auckland Island during the Deep Propagating Gravity Wave Experiment. The results are compared to a Fourier solution. The emphasis is on interpretations involving horizontal geometrical spreading. The results show larger horizontal geometrical spreading for nonhydrostatic waves than for hydrostatic waves in the region directly above the island; the dominant effect of horizontal geometrical spreading in the lower ∼30 km of the atmosphere, compared to the effects of refraction and background density variation; and the enhanced geometrical spreading due to directional wind in the approach to a critical layer in the mesosphere. ©2016. American Geophysical Union. All Rights Reserved. 资助项目: AGS-1338557
; AGS-1338557
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62755
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: Computational Physics, Inc., Springfield, VA, United States; Space Science Division, U.S. Naval Research Laboratory, Washington, DC, United States
Recommended Citation:
Broutman D.,Eckermann S.D.,Knight H.,et al. A stationary phase solution for mountain waves with application to mesospheric mountain waves generated by Auckland Island[J]. Journal of Geophysical Research: Atmospheres,2017-01-01,122(2)