A FEASIBILITY AND DESIGN STUDY FOR AN AIRBORNE RADIOMETRIC SYSTEM TO MEASURE REMOTELY THE VERTICAL PROFILE OF TEMPERATURE, HUMIDITY, AND PRESSURE.
Final rept. 1 Sep 66-30 Nov 67,
SPERRY RAND RESEARCH CENTER SUDBURY MASS
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Microwave and infrared radiation from atmospheric oxygen and carbon dioxide was computed for different types of atmospheres. Functions were derived which specified the relative radiative contribution from different layers in the atmosphere and these functions were found to be reasonably constant for extreme atmospheric conditions. Methods were developed for remotely measuring the temperature and pressure height profiles from 100 mb to the surface. The infrared results were more accurate, giving a probable error of about 0.8 deg C as opposed to 1.0 deg C for the microwave. This difference in accuracy is not significant when compared against the far greater all weather capability obtained with the microwave technique. Errors in remote probing from 100 mb looking downward are the largest in the lowest layers of the atmosphere. Nevertheless, the analytical feasibility of remotely measuring the air temperature and pressure height profiles has been established with the results approaching that of ground-based radiosondes. Author