We present the results of the ground-based microwave measurements of evolution of the vertical ozone content in the middle atmosphere above Nizhny Novgorod (56°20' N, 44° E) in the winter of 2017–2018. The results are compared with the satellite-based sensing data obtained using the MLS instrument onboard the Aura satellite and the ERA5 reanalysis data. In particular, the degree of the dependence of the stratospheric-ozone content on the position of the polar-vortex boundary with respect to the observation point at different altitudes is established. It is recorded that in January 2018 the vortex approached the city of Nizhny Novgorod and the boundary of the vortex up to its collapse (February 12), oscillated above the city, so that different altitude levels alternately appeared inside or outside the vortex. Such dynamics of the vortex most noticeably affected the evolution of the stratospheric maximum of the ozone content, whose position followed variation in the vortex boundary and quasiperiodically varied in the altitude range 30–35 km. The results of the ground-based microwave sensing give on the average a lower relative ozone content than the MLS data with a maximum systematic difference of about 0.8 ppm at the altitudes 38–39 km. Nevertheless, we recorded a more distinct response of the ozone content to a change in the structure of the vortex above Nizhny Novgorod than that in the case of using the satellite and reanalysis data.

我们展示了下诺夫哥罗德（56°20 'N，东经44°），在2017-2018年冬季。将结果与使用Aura卫星上的MLS仪器获得的基于卫星的感测数据以及ERA5重新分析数据进行比较。特别地，建立了平流层臭氧含量对极地涡旋边界相对于不同高度的观测点的位置的依赖程度。据记录，在2018年1月，涡旋接近下诺夫哥罗德市，涡旋的边界一直到其崩溃（2月12日），并在城市上方振荡，因此在涡旋的内部或外部交替出现不同的海拔高度。这种涡旋动力学最明显地影响了平流层臭氧含量最大值的演变，其位置跟随涡旋边界的变化，并且在30-35 km的高度范围内呈准周期性变化。地面微波感测的结果平均得出的相对臭氧含量比MLS数据低，在38-39 km的高度上最大系统差约为0.8 ppm。然而，与使用卫星和再分析数据的情况相比，我们记录了臭氧含量对下诺夫哥罗德上方涡旋结构变化的更明显响应。