SOME FEATURES OF THE VERTICAL OZONE DISTRIBUTION FROM MILLIMETER-WAVEMEASUREMENTS AT PUSHCHINO AND ONSALA OBSERVATORIES

A number of features of the stratospheric ozone distribution were reve aled by joint millimeter-wave observations of ozone emission lines at 142,175 and 110,836 GHz carried out during the winter periods of 1988- 1989 and 1989-1990 at the Radioastronomical Observatory of the P. N. L ebedev Physical Institute of the Russian Academy of Sciences and at th e Onsala Space Observatory of Chalmers University of Technology, Swede n. It is shown that vertical ozone variations observed at the two obse rvatories were connected with large scale dynamical processes that occ urred in the stratosphere. When the stratosphere was relatively undist urbed the ozone profiles obtained at both observatories were close to the ozone reference model given by Keating and Pitts. There were perio ds during a stratospheric warming when the ozone content measured at t he two observatories in the 25-40 km altitude range was higher by a fa ctor approximately 1.5 than the model values. Dynamical processes in t he stratosphere also gave rise to rapid (4 h duration) and large devia tions from the model ozone profile. An ozone layer depletion was obser ved in the 27-55 km altitude range. The observed ozone variations illu strate the sensitivity of the ozone distribution to stratospheric dist urbances including stratospheric warmings.