A chemiluminescent analyzer for stratospheric measurements of the ozone concentration (FOZAN)

Within the framework of the Airborne Polar Experiment, a new ozone analyzer based on chemiluminescent technology has been developed for high-altitude measurements. The instrument was tested on board the M-55 Geophysica aircraft during some flights over Italy, reaching an altitude of about 20 000 m and a temperature of about -75 degrees C. This paper presents the chemiluminescent characteristics of the sensor, the electronic design of the instrument, and a comparison between the results obtained during a test flight with those derived from a contemporary balloon sounding. The instrumental performances of the analyzer were found to be suitable for stratospheric applications.