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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 33 — Nov. 20, 2001
  • pp: 6102–6110

Simultaneous retrievals of temperature and volume mixing ratio constituents from nonoxygen Odin submillimeter radiometer bands

Philippe Baron, Frank Merino, and Donal Murtagh  »View Author Affiliations


Applied Optics, Vol. 40, Issue 33, pp. 6102-6110 (2001)
http://dx.doi.org/10.1364/AO.40.006102


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Abstract

We present the retrieval of temperature and O3 volume mixing ratio profiles in the middle atmosphere from a single strong O3 line. We performed the study using simulated limb-sounding measurements in the frame of the submillimeter radiometer (SMR) instrument that will be carried by the Odin satellite that is due to be launched in early 2001. This study is interesting for the Odin SMR data analysis because we first provide additional temperature measurements, and second reduce significantly the O3 retrieval error that is due to the temperature and pressure uncertainties. Nonlinear retrievals are performed to retrieve the O3, CO, H2O, and temperature profiles simultaneously from the spectral band 576.27–576.67 GHz. The pressure profile is deduced from the hydrostatic equilibrium equation after each iteration. Temperature and O3 can be retrieved throughout the stratosphere from 15–50 and 20–50 km, respectively, with a vertical resolution of 3 km. The altitude domain corresponds to the parts of the atmosphere where the signal intensity saturates in some spectrometer channels. A total error of 4–6 K has been found in the temperature profile, mainly because of the instrumental thermal noise and to a lesser extent the calibration. The total error in the O3 profile is 5–10% and is dominated by the O3 line-broadening parameter. The total error on the retrieved pressure profile is 2–10% because of the errors in calibration and reference pressure.

© 2001 Optical Society of America

OCIS Codes
(010.4950) Atmospheric and oceanic optics : Ozone
(280.0280) Remote sensing and sensors : Remote sensing and sensors

History
Original Manuscript: November 13, 2000
Revised Manuscript: May 29, 2001
Published: November 20, 2001

Citation
Philippe Baron, Frank Merino, and Donal Murtagh, "Simultaneous retrievals of temperature and volume mixing ratio constituents from nonoxygen Odin submillimeter radiometer bands," Appl. Opt. 40, 6102-6110 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-33-6102

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