A comparison of methods for retrieving stratospheric ozone profiles from OSIRIS limb-scatter measurements Original Research Article

Vertical profiles of stratospheric ozone number density derived from optical spectrograph and infrared imager system (OSIRIS) measurements of limb-scattered sunlight are presented. Ozone profiles are inferred using a method based on the analysis of normalised and paired limb radiance profiles at a set of wavelengths covering the Chappuis–Wulf bands of ozone, and using differential optical absorption spectroscopy (DOAS) in the Chappuis region. Both methods incorporate the pseudo-spherical multiple scattering radiative transfer model LIMBTRAN and an optimal estimation (OE) approach. The results of both methods are compared with ozone sonde and other satellite measurements.