Estimation of total atmospheric ozone from GOES sounder radiances with high temporal resolution

The potential for using Geostationary Operational Environmental Satellite ( GOES) Sounder radiance measurements to monitor total atmospheric ozone is e xamined. A statistical regression using GOES Sounder spectral bands 1-15 ra diances allows estimation of total atmospheric ozone. Hourly GOES ozone pro ducts have been generated since May 1998. GOES ozone estimates are compared with Total Ozone Mapping Spectrometer (TOMS) ozone measurements from the E arth Probe satellite and ground-based Dobson spectrometer ozone observation s. Results show that the percentage root-mean-square (rms) difference betwe en instantaneous TOMS and GOES ozone estimates ranges from 4% to 7%. Also, daily comparisons for 1998 between GOES ozone values and ground-based obser vations at Bismarck, North Dakota; Wallops Island, Virginia; and Nashville, Tennessee, show that the rms difference is approximately 21 Dobson units. Given the hourly measurements and high-spatial density provided by the GOES Sounder, GOES ozone estimates and associated products show promise.