INVESTIGATION OF THE ABSORPTION OF INFRARED RADIATION BY ATMOSPHERIC GASES
Abstract
The continuum absorption by H2O between 800 and 1250/cm and by CO2 from 780 to 900/cm has been measured. The continuum results from the extreme wings of very strong absorption lines centered outside the 800-1250/cm interval. Experimental results are compared with calculated values based on various line shapes. The extreme wings of N2-broadened H2O lines produce less than 0.005 as much continuum absorption as self-broadened H2O lines at the same pressure. Self-broadened H2O lines absorb more than Lorentz-shaped lines, but the wings of self-broadened CO2 lines absorb only approximately 0.01 as much in the 780-900/cm region as if they had the Lorentz shape. The shapes of the wings of the CO2 lines which produce the continuum between 780 and 900/cm are similar to those near 2400/cm for both self broadening and N2 broadening. Suggestions on methods for using the results for atmospheric transmission calculations are given.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1970
- Accession Number
- AD0702117
Entities
People
- Darrell E. Burch