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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 4 — Feb. 1, 2004
  • pp: 928–932

Calculated refractivity of water vapor and moist air in the atmospheric window at 10 μm

Richard J. Mathar  »View Author Affiliations


Applied Optics, Vol. 43, Issue 4, pp. 928-932 (2004)
http://dx.doi.org/10.1364/AO.43.000928


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Abstract

The HITRAN 2000 database of infrared line transitions has been used to calculate the dispersion coefficient of water vapor at room temperature in the atmospheric window up to 25 μm, confirming an equivalent earlier compilation [Infrared Phys. 26, 371 (1986)]. I complement this line set by using an previously published ultraviolet pseudospectrum [J. Chem. Phys. 68, 1426 (1978)] to improve coverage of the near infrared. The effect of admixtures of abundant nitrogen, oxygen, and carbon dioxide is predicted on the same calculational basis to synthesize the air representative of the mountain that hosts the Very Large Telescope Interferometer and is found to be small compared with the dominant role of water at wavelengths above 3 μm.

© 2004 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.7340) Atmospheric and oceanic optics : Water
(260.2030) Physical optics : Dispersion
(260.3060) Physical optics : Infrared

History
Original Manuscript: July 30, 2003
Revised Manuscript: November 3, 2003
Published: February 1, 2004

Citation
Richard J. Mathar, "Calculated refractivity of water vapor and moist air in the atmospheric window at 10 μm," Appl. Opt. 43, 928-932 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-4-928

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