DETECTION OF TROPOSPHERIC OZONE BY REMOTE-SENSING FROM THE GROUND

Due to larger multiple scattering effects in the troposphere compared to that in the stratosphere, the optical path of tropospheric ozone is markedly enhanced (as compared with that of stratospheric ozone) in t he Huggins bands from 310 to 345 nm. Model study of the direct and dif fuse solar fluxes on the ground shows differences between tropospheric and stratospheric ozone. The characteristic signature of tropospheric ozone enables us to distinguish a change in troposheric ozone from th at of stratospheric ozone. A simple retrieval algorithm is used to rec over the tropospheric column ozone from simulated data. (C) 1997 Elsev ier Science Ltd.