SOME OBSERVATIONS OF GRAVITY-WAVE-INDUCED STRUCTURE IN OZONE AND WATER-VAPOR DURING EASOE

During the EASOE campaign, measurements were made of temperature and d ifferent minor constituents, with the help of instrumented balloons. T he vertical profiles nearly always show small scale structures. Here w e show that on two different days a large part of these small scale st ructure can be explained by the transport induced by waves. The role o f waves is supported by a good correlation found between the small sca le structure of the minor constituents profiles and the temperature pr ofile. Furthermore on 11 December 1991 lidar measurements show the tra ce of a wave on a polar stratospheric cloud (Godin et al. 1993).Compar ison of some of its characteristics with what was found in water vapou r and ozone measurement profiles carried out the same day, confirm the role of the wave in the minor constituent fluctuations.