Monitoring the baric modulation of gas concentration in the Baksan Neutrino Observatory tunnel in the Elbrus Region using a differential absorption lidar

For the first time, concentrations of gases 12CO2,13CO2, СН4, Н2О and the dynamics of Earth degassing under the changing atmospheric pressure were remotely analyzed using a differential absorption lidar. To reduce the influence of external meteorological factors, the sensing was carried out in a dead-end tunnel of the Baksan Neutrino Observatory of the Institute for Nuclear Research of the Russian Academy of Sciences.