CALCULATED VALUES OF ABSORPTION DUE TO WATER VAPOR AND OXYGEN IN THE MILLIMETER SPECTRUM
Abstract
Graphs of the calculated values of water vapor absorption at sea level, 2, 4, 6, and 8 kms elevation and the total water vapor attenuation through the lower 9 kms of the earth's atmosphere for elevation angles of 90, 60, 30, and 15 degrees in the frequency range of 10 to 400 kmc are presented. The attenuation due to the combined oxygen absorption lines at sea level over the same frequency range and calculated values of oxygen absorption at sea level, 8, 11, and 32 kms in the frequency range of 50 to 70 kmc by T. F. Rogers are also included. The basis of the calculations is a best fit of the measured values of water vapor attenuation at sea level. The attenuation was extrapolated to high elevations for a standard NACA atmosphere with the pressure and temperature dependence explicit in the Van Vleck-Weisskopf equation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 20, 1961
- Accession Number
- AD0254460
Entities
People
- Charles W. Tolbert
- R.m. Dickinson
Organizations
- University of Texas at Austin