Ozone number density profiles in the lower mesosphere as determined by the French experiment on board OSO‐8

Solar occulation data gathered by the French solar instrument on board the OSO-8 satellite have been used to determine the ozone number density distribution between about 50 and 70 km. The solar extinction measurements were made near the Mg II h (2803 A) and Mg II k (2796 A) solar emission lines. The derived ozone number density profiles at 22° and 38°N latitude during July 1975 are presented and compared with other observations and model predictions.