Waves are very important as main drivers of different patterns (streamers) in stratosphere. We analyze some changes of these waves or infrasound characteristics related to streamers using continuous Doppler soundings, array of microbarometers in the Czechia. Ground measurements using the WBCI array showed that GW propagation azimuths were more random during streamers than during calm conditions. Measurements in the ionosphere during streamers did not differ from those expected for the given time

Increasing concentration of greenhouse gases, particularly of CO₂, in the atmosphere causes well-known heating of the troposphere and surface. However, the increasing concentration of CO₂ also affects higher levels of the atmosphere, the stratosphere, mesosphere, thermosphere, and ionosphere, where it results in remarkable long-term trends. This article reviews significant progress in investigations of long-term trends in the mesosphere, thermosphere, and ionosphere during the period 2018–2022.

This paper is devoted to the occurrence of discontinuities in the ozone concentration data from the selected reanalyses, because they have large impact to the results of trend studies. The discontinuity occurrence is reanalyse dependant. The discontinuities frequently occur at the middle stratosphere and in the troposphere for a certain reanalyses. According our opinion, the reanalyses data can be used in trend studies especially in the lower stratosphere.

Severe meteorological storm Fabienne passing above central Europe was observed. Significant variations of atmospheric and ionospheric parameters were detected. Above Europe, stratospheric temperature and wind significantly changed in coincidence with frontal transition. Within ionospheric parameters, we have detected significant wave-like activity shortly after the cold front crossed the observational point. During the storm event, we have observed strong horizontal plasma flow shears.

We observe the planetary and gravity wave activity in the vertical profile of ozone at the mid-European ozonosonde stations The performance of the used detection method is satisfactory. There are differences in the following characteristics of the structure caused by the planetary and gravity wave: the annual variation, the size, and the vertical distribution. The results are influenced by the ozonosonde vertical resolution only for small and medium structures.