Response of the Ionospheric 2 Layer to the Geomagnetic Storm of February 26-28, 2023

The results of studies of the behavior of the main characteristics of the region of the ionosphere during a strong long-lasting magnetic storm on February 26-28, 2023 are presented. Variations in the critical frequency of the ionospheric 2 layer 2 (characterizing the maximum electron density) and the height of the maximum of the 2 layer of ionosphere 2 are analyzed based on their relative deviations from quiet conditions. In the European region, a positive pre-storm anomaly in 2 variations and a negative anomaly after the onset of a magnetic storm have been identified. It has been established that the 2 height changes greatly during a magnetic storm. The dependence of the ionospheric response on the location of the ionospheric station is shown.