STRATOSPHERIC OZONE VARIABILITY IN HIGH-LATITUDES FROM MICROWAVE OBSERVATIONS

Results of microwave studies of stratospheric ozone above approximate to 20 km in high latitudes in the years 1986-1990 are presented. Measu rements were performed with a ground-based spectral heterodyne receive r. The technique is based on the measurements of atmospheric ozone emi ssion in lines of rotational transitions corresponding to frequencies of about 102 and 142 GHz. The main result of the investigations is the detection of rather strong stratospheric ozone variability above appr oximate to 20 km. The characteristic timescales of these variations ex tend from a few hours in some periods of observation to a few days, we eks, or months. The latter may be considered as seasonal variations.