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Proceedings Paper

Surface retrievals from Hyperion EO1 using a new, fast, 1D-Var based retrieval code
Author(s): Jean-Claude Thelen; Stephan Havemann; Gerald Wong
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Paper 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.

Paper Details

Date Published: 21 May 2015
PDF: 8 pages
Proc. SPIE 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI, 947218 (21 May 2015); doi: 10.1117/12.2181396
Show Author Affiliations
Jean-Claude Thelen, UK MetOffice (United Kingdom)
Stephan Havemann, UK MetOffice (United Kingdom)
Gerald Wong, UK MetOffice (United Kingdom)

Published in SPIE Proceedings Vol. 9472:
Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI
Miguel Velez-Reyes; Fred A. Kruse, Editor(s)

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