Determination of terrestrial atmospheric absorption at a wavelength of 460 microns

Details Determination of terrestrial atmospheric absorption at a wavelength of 460 microns Determination of terrestrial atmospheric absorption at a wavelength of 460 microns

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977azh....54.1314z&link_type=abstract

Astronomicheskii Zhurnal, vol. 54, Nov.-Dec. 1977, p. 1314-1318. In Russian.

Astronomy and Astrophysics

Astronomy

Absorptivity, Astronomical Observatories, Atmospheric Attenuation, Infrared Absorption, Atmospheric Moisture, Infrared Detectors, Water Vapor

Scientific paper

Results are presented for a determination of total vertical absorption in the atmospheric window centered at a wavelength of 460 microns. Measurements were performed at a height of approximately 3000 m with an n-InSb detector. The zenith atmospheric optical depth at 460 microns is found to be equal to 1.8 times the absolute humidity measured in grams per cubic centimeter. The measurements suggest a water-vapor absorption coefficient of 55 dB/km at 460 microns under standard conditions at a scale height of 1.5 km.

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