Attenuation of the Earth's atmosphere between the frequencies of 100 and 140 gigacycles per second

Autor: C. W. Tolbert, A. W. Straiton, L. C. Krause
Rok vydání: 1964
Předmět:
Zdroj: Journal of Geophysical Research. 69:1349-1357
ISSN: 0148-0227
DOI: 10.1029/jz069i007p01349
Popis: The attenuation by atmospheric oxygen and water vapor of electromagnetic energy between the frequencies of 100 and 140 Gc/s is described by calculations based on measurements of the attenuation of simulated atmospheres in an absorption cell and by direct measurements of the total attenuation through the earth's atmosphere. The calculated and the directly measured values of attenuation, in general, are in good agreement. There is, however, a large discrepancy (a factor of approximately 4) between theoretical and absorption cell values of water vapor attenuation and a moderate discrepancy between the absorption cell 118.75-Gc/s oxygen line wing shape and the Van Vleck-Weisskopf theoretical line shape. Both discrepancies can be attributed to the failure of the line shape factor to describe the attenuation in the wings of the absorption lines.
Databáze: OpenAIRE