Submitted by ndl303 on
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Profiles of O3 and aerosols are retrieved from measured OSIRIS limb radiances using the Saskmart algorithm. The algorithm employs the following key features

1. Generates retrieval vectors using ratios of radiances. This makes the algorithm insensitive to errors in absolute calibration.
2. Generation of altitude dependent weighting functions for each retrieval vector. Allows combination of different spectral regions
3. Forward modelling of radiances using the Sasktran spherical radiative transfer model
4. Inversion using a MART algorithm. Converges to consistent, physically meaningful solutions with minimal knowledge of initial conditions or a-priori.