Accession Number:

AD0254460

Title:

CALCULATED VALUES OF ABSORPTION DUE TO WATER VAPOR AND OXYGEN IN THE MILLIMETER SPECTRUM

Descriptive Note:

Corporate Author:

TEXAS UNIV AT AUSTIN ELECTRICAL ENGINEERING RESEARCH LAB

Personal Author(s):

Report Date:

1961-02-20

Pagination or Media Count:

1.0

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 earths 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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE