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Proceedings Paper

Levenberg-Marquardt method with simultaneous calculations of averaging kernels and errors for methane retrieval from IASI spectra
Author(s): M. Yu. Khamatnurova; K. G. Gribanov
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Paper Abstract

Levenberg-Marquardt method parameter selection for methane vertical profile retrieval from IASI/METOP spectra is presented. A modified technique for iterative calculation of averaging kernels and a posteriori errors for every spectrum is suggested. Known from literature method is expanded for the case of absence of a priori statistics for methane vertical profiles. Software for massive processing of IASI spectra using is developed. Effect of LM parameter selection on averaging kernel norm and a posteriori errors is illustrated. NCEP reanalysis data provided by ESRL (NOAA, Boulder, USA) were taken as initial guess. Surface temperature, temperature and humidity vertical profiles are retrieved before methane vertical profile retrieval.

Paper Details

Date Published: 19 November 2015
PDF: 6 pages
Proc. SPIE 9680, 21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics, 968071 (19 November 2015); doi: 10.1117/12.2205948
Show Author Affiliations
M. Yu. Khamatnurova, Ural Federal Univ. (Russian Federation)
K. G. Gribanov, Ural Federal Univ. (Russian Federation)

Published in SPIE Proceedings Vol. 9680:
21st International Symposium Atmospheric and Ocean Optics: Atmospheric Physics
Oleg A. Romanovskii, Editor(s)

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