21 May 2015 Surface retrievals from Hyperion EO1 using a new, fast, 1D-Var based retrieval code
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Abstract
We have developed a new algorithm for the simultaneous retrieval of the atmospheric profiles (temperature, humidity, ozone and aerosol) and the surface reflectance from hyperspectral radiance measurements obtained from air/space-borne, hyperspectral imagers such as Hyperion EO-1. The new scheme, proposed here, consists of a fast radiative transfer code, based on empirical orthogonal functions (EOFs), in conjunction with a 1D-Var retrieval scheme. The inclusion of an ’exact’ scattering code based on spherical harmonics, allows for an accurate treatment of Rayleigh scattering and scattering by aerosols, water droplets and ice-crystals, thus making it possible to also retrieve cloud and aerosol optical properties, although here we will concentrate on non-cloudy scenes. We successfully tested this new approach using hyperspectral images taken by Hyperion EO-1, an experimental pushbroom imaging spectrometer operated by NASA.
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Jean-Claude Thelen, Jean-Claude Thelen, Stephan Havemann, Stephan Havemann, Gerald Wong, Gerald Wong, } "Surface retrievals from Hyperion EO1 using a new, fast, 1D-Var based retrieval code", Proc. SPIE 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI, 947218 (21 May 2015); doi: 10.1117/12.2181396; https://doi.org/10.1117/12.2181396
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