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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 16 — Aug. 6, 2007
  • pp: 10458–10472

Assessment of the horizontal resolution of retrieval products derived from MIPAS observations

M. Carlotti, B. M. Dinelli, E. Papandrea, and M. Ridolfi  »View Author Affiliations

Optics Express, Vol. 15, Issue 16, pp. 10458-10472 (2007)

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We report the results of a study aimed at the assessment of the trade-off between precision and horizontal resolution of the retrieval products of MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) operating onboard the ENVIronmental SATellite. By exploiting different observation setups we could perform the study by acting on both the retrieval and the sampling grids. Our results are compared with those previously obtained on simulated observations [Appl. Opt. 43, 1–11 (2004)]. We show that the horizontal sampling of the atmosphere operated by the spectrometer cannot be pushed beyond some limits without inducing unacceptable correlations among the retrieved profiles. These correlations show-up only when using a two-dimensional retrieval algorithm and can be evaluated through the instabilities that they trigger in the horizontal distribution of the retrieval products. In order to reduce these instabilities we compare the strategy of degrading the retrieval grid with the strategy of applying horizontal regularization. We discuss the different trade-off between precision and spatial resolution connected with the two strategies. The method adopted in this study, is applicable to any orbiting limb sounder measuring along the orbit track.

© 2007 Optical Society of America

OCIS Codes
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(010.1290) Atmospheric and oceanic optics : Atmospheric optics

ToC Category:
Atmospheric and Oceanic Optics

Original Manuscript: April 6, 2007
Revised Manuscript: July 10, 2007
Manuscript Accepted: July 19, 2007
Published: August 3, 2007

M. Carlotti, B. M. Dinelli, E. Papandrea, and M. Ridolfi, "Assessment of the horizontal resolution of retrieval products derived from MIPAS observations," Opt. Express 15, 10458-10472 (2007)

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