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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 7 — Mar. 1, 2009
  • pp: 1358–1365

Improved measurements of the foreign-broadened continuum of water vapor in the 6.3 μm band at 30 ° C

Penny M. Rowe and Von P. Walden  »View Author Affiliations


Applied Optics, Vol. 48, Issue 7, pp. 1358-1365 (2009)
http://dx.doi.org/10.1364/AO.48.001358


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Abstract

Atmospheric emission in the ν 2 band of water vapor by the foreign-broadened continuum ( 1300 2000 cm 1 ) is important for retrievals of upper tropospheric water vapor. Previous work reported continuum coefficients retrieved from two downwelling emission measurements made with the Polar Atmospheric Emitted Radiance Interferometer (PAERI) at temperatures characteristic of the upper troposphere (below 25 ° C ) at Dome C, Antarctica. These results are improved upon here using 19 different measurements. Improvements have been made to the PAERI radiance calibration, the radiance simulations, and the error analysis. Compared to the Mlawer, Tobin, Clough, Kneizys, Davies continuum, the retrieved continuum is found to be 20% to 50% lower from 1350 to 1490 cm 1 and 0% to 20% higher from 1850 to 1980 cm 1 .

© 2009 Optical Society of America

OCIS Codes
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(300.6340) Spectroscopy : Spectroscopy, infrared
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: July 10, 2008
Revised Manuscript: January 16, 2009
Manuscript Accepted: January 29, 2009
Published: February 23, 2009

Citation
Penny M. Rowe and Von P. Walden, "Improved measurements of the foreign-broadened continuum of water vapor in the 6.3 μm band at −30 °C," Appl. Opt. 48, 1358-1365 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-7-1358


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