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 |
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Rok vydání: | 1964 |
Předmět: |
Atmospheric Science
Materials science Absorption spectroscopy Soil Science Aquatic Science Oceanography Atmosphere Optics Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Mass attenuation coefficient Shape factor Earth-Surface Processes Water Science and Technology Line (formation) Ecology business.industry Attenuation Paleontology Forestry Computational physics Geophysics Space and Planetary Science Attenuation coefficient business Water vapor |
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 |
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