Iterative approach to self-adapting and altitude-dependent regularization for atmospheric profile retrievals
Year: 2011
Authors: Ridolfi M., Sgheri L.
Autors Affiliation: CNR, Ist Appl Calcolo, Florence, Italy
Univ Bologna, Dipartimento Fis, I-40126 Bologna, Italy
Abstract: In this paper we present the IVS (Iterative Variable Strength) method, an altitude-dependent, self-adapting Tikhonov regularization scheme for atmospheric profile retrievals. The method is based on a similar scheme we proposed in 2009. The new method does not need any specifically tuned minimization routine, hence it is more robust and faster. We test the self-consistency of the method using simulated observations of the Michelson Interferometer for Passive Atmospheric Sounding (MIPAS). We then compare the new method with both our previous scheme and the scalar method currently implemented in the MIPAS on-line processor, using both synthetic and real atmospheric limb measurements. The IVS method shows very good performances. (C) 2011 OSA
Journal/Review: OPTICS EXPRESS
Volume: 19 (27) Pages from: 26696 to: 26709
More Information: We thank the IFAC-CNR institute in Firenze for making available computing and technical facilities through associate contract to M.R., in the frame of the research activity TA.P06.002. This study was supported by the ESA-ESRIN contract 21719/08/I-OL.KeyWords: TECHNICAL NOTE; MIPAS; PARAMETERDOI: 10.1364/OE.19.026696