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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 44, Iss. 16 — Jun. 1, 2005
  • pp: 3291–3301

Tomographic retrieval of atmospheric parameters from infrared limb emission observations

Tilman Steck, Michael Höpfner, Thomas von Clarmann, and Udo Grabowski  »View Author Affiliations


Applied Optics, Vol. 44, Issue 16, pp. 3291-3301 (2005)
http://dx.doi.org/10.1364/AO.44.003291


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Abstract

Typical inversion of limb-sounding measurements assumes local horizontal homogeneity of the atmosphere. This simplification corresponds to spectral radiance errors that can exceed the noise level of a typical infrared instrument by a factor of 10 and causes errors in retrieved state parameters. To avoid these errors and to take the horizontal structure of the atmosphere into account, a two-dimensional (2D) tomographic sequential estimation approach is described. Application to temperature retrievals from simulated measurements yields typical retrieval errors of the order of 1 K, and a one-dimensional retrieval with the same synthetic measurements shows differences to the true values up to 10 K in regions with strong horizontal inhomogeneities. The horizontal resolution of the 2D retrieval is even better (up to 40 km) than the horizontal tangent point spacing.

© 2005 Optical Society of America

OCIS Codes
(000.3860) General : Mathematical methods in physics
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(300.6340) Spectroscopy : Spectroscopy, infrared

Citation
Tilman Steck, Michael Höpfner, Thomas von Clarmann, and Udo Grabowski, "Tomographic retrieval of atmospheric parameters from infrared limb emission observations," Appl. Opt. 44, 3291-3301 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-16-3291

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