The application of modified Levenberg-Marquardt method for greenhouse gases retrieval in the Earth's atmosphere from high-resolution IR spectra

Pavel A. Chistyakov; Ilya V. Zadvornykh; Konstantin G. Gribanov

doi:10.1117/12.2603469

15 December 2021 The application of modified Levenberg-Marquardt method for greenhouse gases retrieval in the Earth's atmosphere from high-resolution IR spectra

Pavel A. Chistyakov, Ilya V. Zadvornykh, Konstantin G. Gribanov

Author Affiliations +

Proceedings Volume 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics; 1191648 (2021) https://doi.org/10.1117/12.2603469
Event: 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 2021, Moscow, Russian Federation

Abstract

Here we present some results of modified Levenberg-Marquardt method applicability for solving inverse problems of greenhouse gases remote sensing in Earth’s atmosphere. The computational experiments were performed to retrieve the vertical profile of the main methane isotopologue from the thermal IR synthetic spectra of IASI/MetOp spectrometer. The noise parameters were set equivalent to sensor characteristics. The optimal estimation method implemented in FIREARMS software was used for solving the inverse problem. The data of the retrospective climate analysis CAMS GHG Flux Inversions were used as an initial guess and a statistical set of profiles. The computational experiment showed convergence and accuracy of the proposed method, which, however, turned out to be more computationally expensive than Gauss-Newton method.

Citation Download Citation

Pavel A. Chistyakov, Ilya V. Zadvornykh, and Konstantin G. Gribanov "The application of modified Levenberg-Marquardt method for greenhouse gases retrieval in the Earth's atmosphere from high-resolution IR spectra", Proc. SPIE 11916, 27th International Symposium on Atmospheric and Ocean Optics, Atmospheric Physics, 1191648 (15 December 2021); https://doi.org/10.1117/12.2603469

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