Date of Award

Summer 8-1975

Document Type


Degree Name

Master of Science (MS)



Committee Director

Jacob Bechar

Committee Member

Govind S. Khandelwal

Committee Member

Forrest P. Clay, Jr.

Call Number for Print

Special Collections LD4331.P48C373


The Gas Filter Correlation Radiometer Analyzer (GFCR), in application to the remote sensing of trace gases in the atmosphere, is potentially limited by the sensitivity of the measured upwelling thermal radiation to surface temperature and atmospheric temperature conditions. This study has been carried out to examine the principles of operation of the GFCR Analyzer and to obtain quantitative estimates of the errors produced in GFCR Analyzer measurements of CO (4.6μ), S02 (8.6μ), NH3 (11.0μ), and CH4 (8.1μ) resulting from uncertainties in the atmospheric temperature profile and ground temperature.

A simple mathematical prototype GFCR Analyzer was assumed. A line-by-line atmospheric radiative transfer calculation was used to simulate the response of the instrument to varying concentrations of trace gases in several model atmospheres. Baseline results were calculated using the U.S. Standard 1962 Atmosphere and were then compared to results obtained using the other realistic models.


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