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A total of 154 nights of observations by the USTC Na temperature and wind lidar (32° N, 117° E) suggest significant seasonal variability in the mesopause. Chemistry plays an important role in Na atom formation. More than half of the observed gravity wave (GW) momentum flux (MF), whose divergence determines the GW forcing, is induced by short-period (10 min–2 h) waves. The anticorrelation between MF and zonal wind (U) suggests strong filtering of short-period GWs by semiannual oscillation U.
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ACP | Articles | Volume 18, issue 16
Atmos. Chem. Phys., 18, 11683–11695, 2018
https://doi.org/10.5194/acp-18-11683-2018

Special issue: Layered phenomena in the mesopause region (ACP/AMT inter-journal...

Atmos. Chem. Phys., 18, 11683–11695, 2018
https://doi.org/10.5194/acp-18-11683-2018

Research article 17 Aug 2018

Research article | 17 Aug 2018

Climatology of mesopause region nocturnal temperature, zonal wind and sodium density observed by sodium lidar over Hefei, China (32° N, 117° E)

Tao Li et al.

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Cited articles

Acott, P. E., She, C. Y., Krueger, D. A., Yan, Z. A., Yuan, T., Yue, J., and Harrell, S.: Observed nocturnal gravity wave variances and zonal momentum flux in mid-latitude mesopause region over Fort Collins, Colorado, USA, J. Atmos. Sol. Terr. Phys., 73, 449–456, https://doi.org/10.1016/j.jastp.2010.10.016, 2011. 
Andrews, D. G., Holton, J. R., and Leovy, C. B.: Middle Atmosphere Dynamics, Elsevier, New York, USA, 489 pp., 1987. 
Arnold, K. and She, C.: Metal fluorescence lidar (light detection and ranging) and the middle atmosphere, Contemp. Phys., 44, 35–49, https://doi.org/10.1080/0010751021000019157, 2003. 
Burrage, M. D., Vincent, R. A., Mayr, H. G., Skinner, W. R., Arnold, N. F., and Hays, P. B.: Long-term variability in the equatorial middle atmosphere zonal wind, J. Geophys. Res., 101, 12847–12854, https://doi.org/10.1029/96JD00575, 1996. 
Carrillo-Sánchez, J. D., Nesvorný, D., Pokorný, P., Janches, D., and Plane, J. M. C.: Sources of cosmic dust in the Earth's atmosphere, Geophys. Res. Lett., 43, 11979–11986, https://doi.org/10.1002/2016GL071697, 2016. 
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Short summary
A total of 154 nights of observations by the USTC Na temperature and wind lidar (32° N, 117° E) suggest significant seasonal variability in the mesopause. Chemistry plays an important role in Na atom formation. More than half of the observed gravity wave (GW) momentum flux (MF), whose divergence determines the GW forcing, is induced by short-period (10 min–2 h) waves. The anticorrelation between MF and zonal wind (U) suggests strong filtering of short-period GWs by semiannual oscillation U.
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