Comparison between OSS and "center frequency" methods for modeling of AMSU radiances. The figure shows the RMS between approximate radiances obtained with each model and reference line-by-line calculations.

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This plot of the number OSS points required for the NAST-I bands illustrates the enormous savings in computational time over a monochromatic calculation.

OSS was developed with internal R&D funding from AER.  Subsequent support was from the Integrated Program Office (IPO) of the National Polar-Orbiting Operational Environmental Satellite (NPOESS) Program through contracts for the CMIS, CrIS, and OMPS sensors.  Additional support has been obtained from the Naval Postgraduate School through the Navy SBIR program.