DOI: 10.1002/2014GL062891
论文题名: Seasonal variation of gravity wave activity at midlatitudes from 7years of COSMIC GPS and Rayleigh lidar temperature observations
作者: Khaykin S.M. ; Hauchecorne A. ; Mzé N. ; Keckhut P.
刊名: Geophysical Research Letters
ISSN: 0094-8962
EISSN: 1944-8693
出版年: 2015
卷: 42, 期: 4 起始页码: 1251
结束页码: 1258
语种: 英语
英文关键词: COSMIC GPS
; gravity waves
; MERRA reanalysis
; middle atmosphere dynamics
; Rayleigh lidar
; stratosphere
Scopus关键词: Cosmology
; Ionosphere
; Optical radar
; Potential energy
; Upper atmosphere
; Wave propagation
; Constellation observing system for meteorology
; Ionosphere and climates
; Middle atmosphere dynamics
; Rayleigh lidar
; Reanalysis
; Research and application
; Retrospective analysis
; Spatiotemporal distributions
; Gravity waves
; COSMIC
; geostrophic flow
; GPS
; gravity wave
; lidar
; midlatitude environment
; orographic effect
; potential energy
; Rayleigh number
; seasonal variation
; spatiotemporal analysis
; stratosphere
; temperature profile
; wave propagation
; wind forcing
; zonal wind
; Alpes de Haute Provence
; France
; Provence-Alpes-Cote d'Azur
英文摘要: Seven year series of gravity wave (GW) potential energy at midlatitude stratosphere (10 to 50km) is constructed by combining temperature profiles provided by Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) GPS satellite constellation and Rayleigh lidar operating at Haute Provence observatory in Southern France. The combined series are used to evaluate the representation of GW in Modern Era Retrospective-Analysis for Research and Applications reanalysis. The seasonal and zonal variabilities of GW activity are diagnosed using zonal wind and wind divergence provided by ERA-Interim reanalysis. The spatiotemporal distribution of GW activity is found strongly dependent on the zonal wind variation, wind divergence, and topography. We show that anomalies in the wind divergence can serve as a proxy for locating synoptic-scale enhancements of GW. The analysis provides evidence for orographic GW excitation, and the results are compatible with geostrophic adjustment being an additional source of stratospheric GW. The seasonal GW variability can be largely explained by interaction with the mean flow and wave propagation. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924856138&doi=10.1002%2f2014GL062891&partnerID=40&md5=93b15ca95f0a36076ce242a25856cb02
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8578
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: LATMOS/IPSL, UVSQ, CNRS-INSU, Guyancourt, France
Recommended Citation:
Khaykin S.M.,Hauchecorne A.,Mzé N.,et al. Seasonal variation of gravity wave activity at midlatitudes from 7years of COSMIC GPS and Rayleigh lidar temperature observations[J]. Geophysical Research Letters,2015-01-01,42(4).