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Investigation of a mesospheric bore event over northern China
Li, Q.1,2; Xu, J.1; Yue, J.3; Liu, X.1,4; Yuan, W.1; Ning, B.5; Guan, S.1,2; Younger, J. P.6,7; 北京8701信箱
Department空间天气学国家重点实验室
Source PublicationANNALES GEOPHYSICAE
2013
Volume31Issue:3Pages:409-418
ISSN0992-7689
Language英语
KeywordAtmospheric Composition And Structure Airglow And Aurora Meteorology And Atmospheric Dynamics Middle Atmosphere Dynamics Waves And Tides
AbstractA mesospheric bore event was observed using an OH all-sky airglow imager (ASAI) at Xinglong (40.2° N, 117.4° E), in northern China, on the night of 8–9 January 2011. Simultaneous observations by a Doppler meteor radar, a broadband sodium lidar, and TIMED/SABER OH intensity and temperature measurements are used to investigate the characteristics and environment of the bore propagation and the possible relations with the Na density perturbations. The bore propagated from northeast to southwest and divided the sky into bright and dark halves. The calculations show that the bore has an average phase velocity of 68 m s−1. The crests following the bore have a horizontal wavelength of ~ 22 km. These parameters are consistent with the hydraulic jump theory proposed by Dewan and Picard, as well as the previous bore reports. Simultaneous wind measurements from the Doppler meteor radar at Shisanling (40.3° N, 116.2° E) and temperature data from SABER on board the TIMED satellite are used to characterize the propagating environment of the bore. The result shows that a thermal-Doppler duct exists near the OH layer that supports the horizontal propagation of the bore. Simultaneous Na lidar observations at Yanqing (40.4° N, 116.0° E) suggest that there is a downward displacement of Na density during the passage of the mesospheric bore event.; A mesospheric bore event was observed using an OH all-sky airglow imager (ASAI) at Xinglong (40.2 degrees N, 117.4 degrees E), in northern China, on the night of 8-9 January 2011. Simultaneous observations by a Doppler meteor radar, a broadband sodium lidar, and TIMED/SABER OH intensity and temperature measurements are used to investigate the characteristics and environment of the bore propagation and the possible relations with the Na density perturbations. The bore propagated from northeast to southwest and divided the sky into bright and dark halves. The calculations show that the bore has an average phase velocity of 68ms(-1). The crests following the bore have a horizontal wavelength of similar to 22 km. These parameters are consistent with the hydraulic jump theory proposed by Dewan and Picard, as well as the previous bore reports. Simultaneous wind measurements from the Doppler meteor radar at Shisanling (40.3 degrees N, 116.2 degrees E) and temperature data from SABER on board the TIMED satellite are used to characterize the propagating environment of the bore. The result shows that a thermal-Doppler duct exists near the OH layer that supports the horizontal propagation of the bore. Simultaneous Na lidar observations at Yanqing (40.4 degrees N, 116.0 degrees E) suggest that there is a downward displacement of Na density during the passage of the mesospheric bore event.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1540
Collection空间科学部
Corresponding Author北京8701信箱
Affiliation1.Chinese Acad Sci, Ctr Space Sci & Appl Res, State Key Lab Space Weather, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Hampton Univ, Hampton, VA 23668 USA
4.Henan Normal Univ, Coll Math & Informat Sci, Xinxiang, Peoples R China
5.Chinese Acad Sci, Beijing Natl Observ Space Environm, Inst Geol & Geophys, Beijing, Peoples R China
6.Univ Adelaide, Sch Chem & Phys, Adelaide, SA, Australia
7.ATRAD Pty Ltd, Thebarton, SA, Australia
Recommended Citation
GB/T 7714
Li, Q.,Xu, J.,Yue, J.,et al. Investigation of a mesospheric bore event over northern China[J]. ANNALES GEOPHYSICAE,2013,31(3):409-418.
APA Li, Q..,Xu, J..,Yue, J..,Liu, X..,Yuan, W..,...&北京8701信箱.(2013).Investigation of a mesospheric bore event over northern China.ANNALES GEOPHYSICAE,31(3),409-418.
MLA Li, Q.,et al."Investigation of a mesospheric bore event over northern China".ANNALES GEOPHYSICAE 31.3(2013):409-418.
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