Open AccessGravity waves observation of wind field in stratosphere based on a Rayleigh Doppler lidar
Author(s) -
Ruocan Zhao,
Xiankang Dou,
Dongsong Sun,
Jun Zheng,
Yanling Han,
Tingdi Chen,
Guocheng Wang,
Yingjie Zhou
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.00a581
Subject(s) - stratosphere , gravity wave , lidar , doppler effect , gravitational wave , rayleigh scattering , mesoscale meteorology , wavelength , wind speed , infragravity wave , atmospheric wave , atmospheric sciences , meteorology , physics , remote sensing , environmental science , geology , optics , wave propagation , mechanical wave , longitudinal wave , astronomy , astrophysics
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.