Stratospheric Ozone Variations Over Obninsk from Data of Lidar and Satellite Measurements

Abstract

Analysis of variations of stratospheric ozone content at 13–18, 18–23 and 23–30 km layers is presented from data of lidar and satellite measurements in 2014–2022 over Obninsk city (55.1° N, 36.6° E). Modeling of deviations from seasonal run for separate quarters of year are fulfilled by using of linear regression method. Impact factors under consideration are quasi-biennial oscillation of zonal wind in tropical stratosphere (QBO), Arctic oscillation (AO), El-Nino – Southern oscillation (ENSO), solar activity (SA), volcanic aerosol (VA) and polar stratospheric clouds (PSC). Enhancement of ozone content is observed in eastern QBO phase at 18–30 km layer (I–II quarter) and in western QBO phase at 13–23 km layer (IV quarter). At separate layers it is revealed significant impacts of AO (II–III quarters), SA (I–II quarters) and VA (III–IV). During a year influence of PSC is originally showed in II quarter at 13–18 layer and then in IV quarter at 13–18 layer. Possible physical mechanisms are discussed which are the basis of the correlation relations observed.