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 for application and extension of OSS has been optioned from:

• Integrated Program Office (IPO) of the National Polar-Orbiting Operational Environmental Satellite (NPOESS) Program through contracts for the CMIS, CrIS, and OMPS sensors

• Naval Postgraduate School through the Navy SBIR program

• NOAA, Joint Center for Satellite Data Assimilation

• EUMETSAT

• University of Wisconsin, Space Science and Engineering Center

• NASA Jet Propulsion Laboratory, Tropospheric Emission Spectrometer Group