Ozone Content over the Russian Federation in the First Quarter of 2021

The review is compiled on the basis of the results of operation of the total ozone (TO) monitoring system in the CIS and Baltic countries functioning in the operational mode at the Central Aerological Observatory (CAO). The monitoring system uses data from the national network equipped with M-124 filter ozonometers being under the methodological supervision of the Main Geophysical Observatory. The quality of the functioning of the entire system is operationally controlled in CAO based on the OMI satellite equipment observations (NASA, USA). Basic TO observation data are generalized for each month of the first quarter of 2021 and for the first quarter. Data of routine observations of surface ozone values in the Moscow region are also presented.