TABLE MOUNTAIN OZONE INTERCOMPARISON - BREWER OZONE SPECTROPHOTOMETERUMKEHR OBSERVATIONS

During July and August 1989 a number of ozone profiling instruments we re intercompared at Table Mountain Observatory in California. During t he intercomparison a Brewer ozone spectrophotometer made observations of the total ozone amount and the vertical distribution of ozone. It w as demonstrated that the Umkehr technique produced estimates of the oz one profile which were accurate to better than 15% in the 20- to 40-km altitude range. Values determined for the 24- to 40-km region were mo st accurate, within about 5% of the mean of the other instruments invo lved.