title: Gravity waves observation of wind field in stratosphere based on a Rayleigh Doppler lidar.
abstract: Simultaneous wind and temperature measurements in stratosphere with high time-spatial resolution for gravity waves study are scarce. In this paper we perform wind field gravity waves cases in the stratosphere observed by a mobile Rayleigh Doppler lidar. This lidar system with both wind and temperature measurements were implemented for atmosphere gravity waves research in the altitude region 15-60 km. Observations were carried out for two periods of time: 3 months started from November 4, 2014 in Xinzhou, China (38.425°N,112.729°E) and 2 months started from October 7, 2015 in Jiuquan, China (39.741°N, 98.495°E) . The mesoscale fluctuations of the horizontal wind velocity and the two dimensional spectra analysis of these fluctuations show the presence of dominant oscillatory modes with wavelength of 4-14 km and period of around 10 hours in several cases. The simultaneous temperature observations make it possible to identify gravity wave cases from the relationships between different variables: temperature and horizontal wind. The observed cases demonstrate the Rayleigh Doppler Lidar's capacity to study gravity waves.
authors.forename: Ruocan
authors.initials: R
authors.lastname: Zhao
authors.forename: Xiankang
authors.initials: X
authors.lastname: Dou
authors.forename: Dongsong
authors.initials: D
authors.lastname: Sun
authors.forename: Xianghui
authors.initials: X
authors.lastname: Xue
authors.forename: Jun
authors.initials: J
authors.lastname: Zheng
authors.forename: Yuli
authors.initials: Y
authors.lastname: Han
authors.forename: Tingdi
authors.initials: T
authors.lastname: Chen
authors.forename: Guocheng
authors.initials: G
authors.lastname: Wang
authors.forename: Yingjie
authors.initials: Y
authors.lastname: Zhou