DOI: 10.1002/2015GL066465
论文题名: Influences of source conditions on mountain wave penetration into the stratosphere and mesosphere
作者: Kaifler B. ; Kaifler N. ; Ehard B. ; Dörnbrack A. ; Rapp M. ; Fritts D.C.
刊名: Geophysical Research Letters
ISSN: 0094-8489
EISSN: 1944-8220
出版年: 2015
卷: 42, 期: 21 起始页码: 9488
结束页码: 9494
语种: 英语
英文关键词: DEEPWAVE
; gravity wave
; lidar
; middle atmosphere
; mountain wave
Scopus关键词: Atmospheric turbulence
; Gravity waves
; Ionosphere
; Optical radar
; Potential energy
; Troposphere
; Wind
; Atmospheric gravity waves
; DEEPWAVE
; High-resolution lidar
; Middle atmosphere
; Mountain wave
; Potential energy density
; Source conditions
; Tropospheric winds
; Landforms
; altitude
; amplitude
; atmospheric forcing
; atmospheric wave
; energy dissipation
; gravity wave
; lidar
; mesosphere
; potential energy
; Rayleigh number
; refraction
; spatial resolution
; spatiotemporal analysis
; standing wave
; stratosphere
; wave breaking
; wave propagation
; wind velocity
; Alps
; Lauder
; New Zealand
; New Zealand
; Otago
; South Island
英文摘要: We present atmospheric gravity wave (GW) measurements obtained by a Rayleigh/Raman lidar at Lauder, New Zealand, (45°S, 170°E) during and after the Deep Propagating Gravity Wave Experiment campaign. GW activity and characteristics are derived from 557 h of high-resolution lidar data recorded between June and November 2014 in an altitude range between 28 and 76 km. In this period, strong GW activity occurred in sporadic intervals lasting a few days. Enhanced stratospheric GW potential energy density is detected during periods with high tropospheric wind speeds perpendicular to New Zealand's Southern Alps. These enhancements are associated with the occurrence of quasi-stationary GW (mountain waves). Surprisingly, the largest response in the mesosphere is observed for conditions with low to moderate lower tropospheric wind speeds (2-12 m/s). On the other hand, large-amplitude mountain waves excited by strong tropospheric forcings often do not reach mesospheric altitudes, either due to wave breaking and dissipation in the stratosphere or refraction away from New Zealand. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84946592672&doi=10.1002%2f2015GL066465&partnerID=40&md5=3ffae01f831efa171f82621ebaa01f29
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8105
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Institute of Atmospheric Physics, German Aerospace Center, Oberpfaffenhofen, Germany
Recommended Citation:
Kaifler B.,Kaifler N.,Ehard B.,et al. Influences of source conditions on mountain wave penetration into the stratosphere and mesosphere[J]. Geophysical Research Letters,2015-01-01,42(21).