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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 22 — Aug. 1, 2011
  • pp: 4516–4528

Infrared Atmospheric Sounding Interferometer correlation interferometry for the retrieval of atmospheric gases: the case of H 2 O and CO 2

Giuseppe Grieco, Guido Masiello, Carmine Serio, Roderic L. Jones, and Mohammed I. Mead  »View Author Affiliations


Applied Optics, Vol. 50, Issue 22, pp. 4516-4528 (2011)
http://dx.doi.org/10.1364/AO.50.004516


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Abstract

Correlation interferometry is a particular application of Fourier transform spectroscopy with partially scanned interferograms. Basically, it is a technique to obtain the difference between the spectra of atmospheric radiance at two diverse spectral resolutions. Although the technique could be exploited to design an appropriate correlation interferometer, in this paper we are concerned with the analytical aspects of the method and its application to high-spectral-resolution infrared observations in order to separate the emission of a given atmospheric gas from a spectral signal dominated by surface emission, such as in the case of satellite spectrometers operated in the nadir looking mode. The tool will be used to address some basic questions concerning the vertical spatial resolution of H 2 O and to develop an algorithm to retrieve the columnar amount of CO 2 . An application to complete interferograms from the Infrared Atmospheric Sounding Interferometer will be presented and discussed. For H 2 O , we have concluded that the vertical spatial resolution in the lower troposphere mostly depends on broad features associated with the spectrum, whereas for CO 2 , we have derived a technique capable of retrieving a CO 2 columnar amount with accuracy of ± 7 parts per million by volume at the level of each single field of view.

© 2011 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(280.4991) Remote sensing and sensors : Passive remote sensing
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: February 28, 2011
Revised Manuscript: June 13, 2011
Manuscript Accepted: June 16, 2011
Published: July 29, 2011

Citation
Giuseppe Grieco, Guido Masiello, Carmine Serio, Roderic L. Jones, and Mohammed I. Mead, "Infrared Atmospheric Sounding Interferometer correlation interferometry for the retrieval of atmospheric gases: the case of H2O and CO2," Appl. Opt. 50, 4516-4528 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-22-4516

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