Articles | Volume 22, issue 20
Research article
26 Oct 2022
Research article |  | 26 Oct 2022

Significant enhancements of the mesospheric Na layer bottom below 75 km observed by a full-diurnal-cycle lidar at Beijing (40.41° N, 116.01° E), China

Yuan Xia, Jing Jiao, Satonori Nozawa, Xuewu Cheng, Jihong Wang, Chunhua Shi, Lifang Du, Yajuan Li, Haoran Zheng, Faquan Li, and Guotao Yang

Data sets

SABER Level 2A data (version 2) SABER team


Meteor radar data (Beijing) Institute of Geology and Geophysics, Chinese Academy of Sciences

Sodium lidar data (Beijing) National Space Science Center, Chinese Academy of Sciences

Short summary
The layer of sodium atoms is generally located above 80 km. This study reports the significant enhancements of the sodium layer below 75 km where sodium atoms are short-lived. The neutral chemical reactions were suggested as making a critical contribution. The reported results provide clear observational evidence for the role of planetary waves in the variation of metal layers, and have implications for the response of the metal layers to perturbations in the lower atmosphere.
Final-revised paper