Abstract

A two-satellite microwave occultation system is described that will fix as an absolute function of altitude the pressure-temperature profile generated by a passive infrared sounder. This method would be successful in determining the altitude of the 300-mb pressure level to within 24 m rms, assuming the temperature errors produced by the IR sensor are not greater than 2K rms. Error caused by water vapor in the radio path can be corrected by climatological adjustments (by use of mean water vapor profiles) if accurate water vapor sensors are not available.

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