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Optics Express

Optics Express

  • Editor: Martijn de Sterke
  • Vol. 16, Iss. 20 — Sep. 29, 2008
  • pp: 15816–15833

Retrieval of foreign-broadened water vapor continuum coefficients from emitted spectral radiance in the H2O rotational band from 240 to 590 cm-1

Carmine Serio, Guido Masiello, Francesco Esposito, Paolo Di Girolamo, Tatiana Di Iorio, Luca Palchetti, Giovanni Bianchini, Giovanni Muscari, Giulia Pavese, Rolando Rizzi, Bruno Carli, and Vincenzo Cuomo  »View Author Affiliations

Optics Express, Vol. 16, Issue 20, pp. 15816-15833 (2008)

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The paper presents a novel methodology to retrieve the foreign-broadened water vapor continuum absorption coefficients in the spectral range 240 to 590 cm-1 and is the first estimation of the continuum coefficient at wave numbers smaller than 400 cm-1 under atmospheric conditions. The derivation has been accomplished by processing a suitable set of atmospheric emitted spectral radiance observations obtained during the March 2007 Alps campaign of the ECOWAR project (Earth COoling by WAter vapor Radiation). It is shown that, in the range 450 to 600 cm-1, our findings are in good agreement with the widely used Mlawer, Tobin-Clough, Kneizys-Davies (MT CKD) continuum. Below 450 cm-1 however the MT CKD model overestimates the magnitude of the continuum coefficient.

© 2008 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(300.6270) Spectroscopy : Spectroscopy, far infrared
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
(010.5620) Atmospheric and oceanic optics : Radiative transfer

ToC Category:
Atmospheric and oceanic optics

Original Manuscript: May 6, 2008
Revised Manuscript: July 18, 2008
Manuscript Accepted: August 27, 2008
Published: September 22, 2008

Carmine Serio, Guido Masiello, Francesco Esposito, Paolo Di Girolamo, Tatiana Di Iorio, Luca Palchetti, Giovanni Bianchini, Giovanni Muscari, Giulia Pavese, Rolando Rizzi, Bruno Carli, and Vincenzo Cuomo, "Retrieval of foreign-broadened water vapor continuum coefficients from emitted spectral radiance in the H2O rotational band from 240 to 590 cm-1," Opt. Express 16, 15816-15833 (2008)

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