Iterative approach to self-adapting and altitude-dependent regularization for atmospheric profile retrievals
Anno: 2011
Autori: Ridolfi M., Sgheri L.
Affiliazione autori: 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
Giornale/Rivista: OPTICS EXPRESS
Volume: 19 (27) Da Pagina: 26696 A: 26709
Maggiori informazioni: 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.Parole chiavi: TECHNICAL NOTE; MIPAS; PARAMETERDOI: 10.1364/OE.19.026696