Computed refraction and absorption fluctuations caused by temperature, humidity, and pressure fluctuations: radio waves to 5 [mu]m

Hill, R. J.; Clifford, S. F.; Lawrence, R. S.

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

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Computed refraction and absorption fluctuations caused by temperature, humidity, and pressure fluctuations: radio waves to 5 [mu]m

1980
By Hill, R. J. ; Clifford, S. F. ; Lawrence, R. S.
Series: NOAA technical memorandum ERL WPL ; 59

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$Computed refraction and absorption fluctuations caused by temperature, humidity, and pressure fluctuations: radio waves to 5 [mu]m$

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Personal Author:

Hill, R. J. ; Clifford, S. F. ; Lawrence, R. S.

Hill, R. J. ; Clifford, S. F. ; Lawrence, R. S. Less -
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Wave Propagation Laboratory
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OAR (Oceanic and Atmospheric Research)
Description:

The dependence of fluctuations in atmospheric absorption and refraction upon fluctuations in temperature, humidity and pressure is found for infrared frequencies. This dependence has contributions from line and continuum absorption and from anomalous refraction by water vapor. The functions that relate these fluctuations are necessary for evaluating degradation of electromagnetic radiation by turbulence. They are computed for a given choice of mean atmospheric conditions and graphed as functions of frequency in the wavelength range from radio waves to 5 pm. It is found that turbulent fluctuations in total pressure give a negligible contribution to absorption and refraction fluctuations. Humidity fluctuations dominate absorption fluctuations, but contributions by temperature fluctuations can be non-negligible. Fluctuations in both temperature and humidity affect refraction fluctuations. Sufficiently strong humidity fluctuations can dominate the refraction fluctuations for some infrared frequencies but not for visible frequencies.
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Refraction Remote Sensing Solar Radiation
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NOAA technical memorandum ERL WPL ; 59
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Technical Memorandum
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https://creativecommons.org/publicdomain/zero/1.0/
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CC0 Public Domain
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urn:sha256:93e030452157b6c2f12d45cfcf49c0ba637e9cb330c0c5cbe79bef6a381ba91c
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Computed refraction and absorption fluctuations caused by temperature, humidity, and pressure fluctuations: radio waves to 5 [mu]m

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