Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Water vapor absorption coefficients in the 8–13-μm spectral region: a critical review

Not Accessible

Your library or personal account may give you access

Abstract

Measurements of water vapor absorption coefficients in the thermal IR atmospheric window (8–13 μm) during the past 20 years obtained by a variety of techniques are reviewed for consistency and are compared with computed values based on the AFGL spectral data tapes. The methods of data collection considered were atmospheric long path absorption with a CO2 laser or a broadband source and filters, a White cell and a CO2 laser or a broadband source and a spectrometer, and a spectrophone with a CO2 laser. Advantages and disadvantages of each measurement approach are given as a guide to further research. Continuum absorption has apparently been measured accurately to about the 5–10% level in five of the measurements reported. However, the effect of oxygen broadening has not been fully considered, since most laboratory measurements were made using nitrogen buffering. Oxygen could lead to a small reduction in the adopted value of the water vapor continuum absorption coefficient in air. Also, the temperature dependence does not seem to have been measured well for temperatures <20°C. The rotational and ν2 line absorption coefficients do not appear to have been determined well in this spectral region except at CO2 laser line frequencies, because the agreement between such measurements and the AFGL spectral data tapes is generally not good.

© 1990 Optical Society of America

Full Article  |  PDF Article

Corrections

William B. Grant, "Water vapor absorption coefficients in the 8–13 μm spectral region: a critical review: erratum," Appl. Opt. 29, 3206-3206 (1990)
https://opg.optica.org/ao/abstract.cfm?uri=ao-29-22-3206

More Like This
Water vapor continuum absorption in the 3.5–4.0-μm region

Kenneth O. White, Wendell R. Watkins, Charles W. Bruce, Robert E. Meredith, and Frederick G. Smith
Appl. Opt. 17(17) 2711-2720 (1978)

CO2 DIAL measurements of water vapor

William B. Grant, Jack S. Margolis, Alan M. Brothers, and David M. Tratt
Appl. Opt. 26(15) 3033-3042 (1987)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (6)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved