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Evaluation of upwelling infrared radiance from earth's atmosphereBasic equations for calculating the upwelling atmospheric radiation are presented which account for various sources of radiation coming out at the top of the atmosphere. The theoretical formulation of the transmittance models (line-by-line and quasi-random band model) and the computational procedures used for the evaluation of the transmittance and radiance are discussed in detail. By employing the Lorentz line-by-line and quasi-random computer programs, model calculations were made to determine the upwelling radiance and signal change in the wave number interval of CO fundamental band. These results are useful in determining the effects of different interfering molecules, water vapor profiles, ground temperatures, and ground emittances on the upwelling radiance and signal change. This information is of vital importance in establishing the feasibility of measuring the concentrations of pollutants in the atmosphere from a gas filter correlation instrument flown on an aircraft or mounted on a satellite.
Document ID
19760006575
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Gupta, S. K. (Old Dominion Univ. Norfolk, VA, United States)
Tiwari, S. N. (Old Dominion Univ. Norfolk, VA, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1975
Subject Category
Geophysics
Report/Patent Number
NASA-CR-145711
TR-75-T14
Accession Number
76N13663
Funding Number(s)
CONTRACT_GRANT: NSG-1153
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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