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Optics Express

Optics Express

  • Vol. 17, Iss. 7 — Mar. 30, 2009
  • pp: 5340–5357

Two-dimensional sensitivity analysis of MIPAS observations

M. Carlotti and L. Magnani  »View Author Affiliations


Optics Express, Vol. 17, Issue 7, pp. 5340-5357 (2009)
http://dx.doi.org/10.1364/OE.17.005340


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Abstract

In this paper we propose a new approach to operate two-dimensional sensitivity studies on the observations of MIPAS, an experiment on board the ENVISAT satellite. The proposed analysis system is intended to evaluate the amount and the spatial distribution of the information that is carried by MIPAS observations with respect to the target atmospheric parameters. The new approach enables the definition and assessment of the target-dependent atmospheric sampling of the measurements. The amount of information is evaluated by merging MIPAS measurements, relative to different limb-scans, in a two-dimensional analysis that models the sensitivity of the spectral signals combined with the geometrical redundancy introduced by different observation geometries. The spatial distribution of the information that is obtained with our analysis highlights the advantage of using a two-dimensional retrieval system. Furthermore, within the two-dimensional context, this analysis provides crucial indications for the definition of the optimal retrieval grid and, therefore, for the best exploitation of existing measurements. The proposed analysis is also suited for the design of optimized observation strategies. The sensitivity analysis, applied in this paper to MIPAS observations, can be extended to other orbiting limb sounders that, like MIPAS, continuously measure the atmospheric emission along the orbit track.

© 2009 Optical Society of America

OCIS Codes
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: January 30, 2009
Revised Manuscript: March 12, 2009
Manuscript Accepted: March 14, 2009
Published: March 19, 2009

Citation
M. Carlotti and L. Magnani, "Two-dimensional sensitivity analysis of MIPAS observations," Opt. Express 17, 5340-5357 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-7-5340


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