On the derivation of tropospheric column ozone from radiances measured by the total ozone mapping spectrometer

We have developed a new algorithm to retrieve tropospheric column ozone on a daily basis directly from the measured total ozone mapping spectrometer (TOMS) albedos at a spatial resolution of about 50 km. This new algorithm is applied to the retrieval of tropospheric ozone over the region bounded by 20°W and 60°E longitude and 20°S and 0°S latitude during the 1989 biomass burning season when tropospheric ozone approaches 20% of total ozone. We find that the archived TOMS data underestimates total ozone over cloud free regions and overestimates ozone over the marine stratocumulus cloud off the west coast of Africa. -from Authors