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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 43, Iss. 31 — Nov. 1, 2004
  • pp: 5814–5824

MIPAS-ENVISAT limb-sounding measurements: trade-off study for improvement of horizontal resolution

Marco Ridolfi, Luca Magnani, Massimo Carlotti, and Bianca Maria Dinelli  »View Author Affiliations


Applied Optics, Vol. 43, Issue 31, pp. 5814-5824 (2004)
http://dx.doi.org/10.1364/AO.43.005814


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Abstract

The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) is a limb-scanning spectrometer that has operated onboard the Environmental Satellite since the end of March 2002. Common features of limb-scanning experiments are both high vertical resolution and poor horizontal resolution. We exploit the two-dimensional geo-fit retrieval approach [Appl. Opt. 40, 1872–1875 (2001)] to investigate the possibility of improving the horizontal resolution of MIPAS measurements. Two different strategies are considered for this purpose, one exploiting the possibility (offered by the geo-fit analysis method) for an arbitrary definition of the retrieval grid, the other based on the possibility of saving measurement time by degrading the spectral resolution of the interferometer. The performances of the two strategies are compared in terms of the trade-off between the attained horizontal resolution and the retrieval precision. We find that for ozone it is possible to improve by a factor of 2 the horizontal resolution, which in the nominal measurement plan is ∼530 km. This improvement corresponds to a degradation of the retrieval precision, which on average varies from a factor of 1.4 to 2.5, depending on the adopted spectral resolution.

© 2004 Optical Society of America

OCIS Codes
(010.1280) Atmospheric and oceanic optics : Atmospheric composition
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(010.4950) Atmospheric and oceanic optics : Ozone
(070.4790) Fourier optics and signal processing : Spectrum analysis
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.1120) Remote sensing and sensors : Air pollution monitoring

History
Original Manuscript: September 25, 2003
Revised Manuscript: February 27, 2004
Manuscript Accepted: July 2, 2004
Published: November 1, 2004

Citation
Marco Ridolfi, Luca Magnani, Massimo Carlotti, and Bianca Maria Dinelli, "MIPAS-ENVISAT limb-sounding measurements: trade-off study for improvement of horizontal resolution," Appl. Opt. 43, 5814-5824 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-31-5814

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