NSSC OpenIR
Growth Rate of Gravity Wave Amplitudes Observed in Sodium Lidar Density Profiles and Nightglow Image Data
Alternative TitleWOS:000507369200024
Vargas, Fabio; Yang, Guotao1; Batista, Paulo2; Gobbi, Delano2
Source PublicationATMOSPHERE
2019
Volume10Issue:12Pages:750
DOI10.3390/atmos10120750
ISSN2073-4433
Language英语
Keywordall-sky imager sodium lidar gravity waves mesospheric nightglow amplitude growth rate wave dissipation-MIDDLE ATMOSPHERE AIRGLOW RADAR LAYER OH SATURATION WINDS
AbstractAmplitude growth rates of quasi-monochromatic gravity waves were estimated and compared from multiple instrument measurements carried out in Brazil. Gravity wave parameters, such as the wave amplitude and growth rate in distinct altitudes, were derived from sodium lidar density and nightglow all-sky images. Lidar observations were carried out in Sao Jose dos Campos (23 ffi S, 46 ffi W) from 1994 to 2004, while all-sky imagery of multiple airglow layers was conducted in Cachoeira Paulista (23 ffi S, 45ffi W) from 1999-2000 and 2004-2005. We have found that most of the measured amplitude growth rates indicate dissipative behavior for gravity waves identified in both lidar profiles and airglow image datasets. Only a small fraction of the observed wave events (4% imager; 9% lidar) are nondissipative (freely propagating waves). Our findings also show that imager waves are strongly dissipated within the mesosphere and lower thermosphere region (MLT), decaying in amplitude in short distances (<12 km), while lidar waves tend to maintain a constant amplitude within that region. Part of the observed waves (16% imager; 36% lidar) showed unchanging amplitude with altitude (saturated waves). About 51.6% of the imager waves present strong attenuation (overdamped waves) in contrast with 9% of lidar waves. The general saturated or damped behavior is consistent with diffusive filtering processes imposing limits to amplitude growth rates of the observed gravity waves.
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/7556
Collection中国科学院国家空间科学中心
Affiliation1.Univ Illinois, Dept Elect & Comp Engn, Champaign, IL 61820 USA
2.Chinese Acad Sci, State Key Lab Space Weather, Beijing 100036, Peoples R China
3.Natl Inst Space Res, BR-01000000 Sao Jose Dos Campos, Brazil
Recommended Citation
GB/T 7714
Vargas, Fabio,Yang, Guotao,Batista, Paulo,et al. Growth Rate of Gravity Wave Amplitudes Observed in Sodium Lidar Density Profiles and Nightglow Image Data[J]. ATMOSPHERE,2019,10(12):750.
APA Vargas, Fabio,Yang, Guotao,Batista, Paulo,&Gobbi, Delano.(2019).Growth Rate of Gravity Wave Amplitudes Observed in Sodium Lidar Density Profiles and Nightglow Image Data.ATMOSPHERE,10(12),750.
MLA Vargas, Fabio,et al."Growth Rate of Gravity Wave Amplitudes Observed in Sodium Lidar Density Profiles and Nightglow Image Data".ATMOSPHERE 10.12(2019):750.
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