Remote and ground-based measurements of ozone profiles during the MAP/GLOBUS 1983 campaign

Ozone observations were carried out during the MAP/GLOBUS campaign in September 1983 by five ground-based instruments located either at the Observatoire de Haute-Provence: the Dobson spectrophotometer, the i.r. SISAM spectrometer, the u.v. Lidar, or at the Bordeaux Observatory: a microwave spectrometer, and at the Biscarosse station there was another Dobson spectrophotometer. A balloon-borne microwave spectrometer was flown from Aire-sur-l'Adour on 28 September. A brief description of the instruments is given, which emphasizes the progress made since the preceding ozone intercomparison campaign in 1981. Results obtained by the different instruments are also given. Their comparison is done first with respect to the ozone content over the whole month of September, then within layers 4, 5 and part of 6 for which Brewer-Mast sonde measurements were included, and finally for vertical profiles at altitudes higher than 30 km. Most comparisons show a good agreement, in general within 5% on the average.