COMPARISON OF INFRARED AND DOBSON TOTAL OZONE COLUMNS MEASURED FROM LAUDER, NEW-ZEALAND

Ozone total columns have been derived from 13 spectral intervals in 5 infrared bands and compared with values deduced from correlative measu rements with a Dobson spectrophotometer. The observations were recorde d on 10 days in 1994 at the Network for the Detection of Stratospheric Change station in Lauder, New Zealand. The infrared total columns wer e derived from spectral fittings of unblended, temperature-insensitive ozone lines in high resolution solar absorption spectra. The line par ameters on the 1992 HITRAN compilation were assumed with the O-3 and H 2O relative volume mixing ratio and temperature profiles specified fro m correlative balloon ozonesonde, microwave O-3, and radiosonde measur ements. The retrieved IR/Dobson total column ratios ranged from 0.96 t o 1.02 with the lower wavenumber bands yielding lower ratios. The resu lts do not support the revised O-3 intensity scale currently used to p rocess O-3 infrared measurements from 2 instruments on the Upper Atmos phere Research Satellite.