Retrieval Algorithms Of Aerosol Profile For Ilas Measurements

Abstract

This paper describes algorithms t o estimate vertical distribution of st,ratosplieric aerosols based on tlie solar occultation measurements of the Improved Limb At,mospheric Spectronieter (ILAS), which will be installed on tlie Advanced Earth Observing Satellite (ADEOS) in 1996. Our retrieval analysis involves following two steps: the vertical structure inversion, which provides t,he profile of local atmospheric extinction from TLhS transmittance data , and the species inversion which inverts the conceiitration of air molecules, oxygen and aerosols from the derived extinction at, ILAS visible wavelengths (from 0.i53 t o 0.784 p i i ) . I t is found tha t tlie retrieved temperature and pressure profiles from ILAS oxygen A-band analysis can improve and simplify tlie aerosol retrieval.