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Proceedings Paper

A physical retrieval algorithm for IASI using PCRTM
Author(s): Xu Liu; Daniel K. Zhou; Allen Larar; William L. Smith; Peter Schluessel
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Paper Abstract

A physical retrieval algorithm was developed for the Infrared Atmospheric Sounder Interferometer (IASI), which was launched on board of the METOP A satellite. The retrieval algorithm uses a Principal Component-based Radiative transfer model (PCRTM) and performs retrieval in Empirical Orthogonal Function (EOF) domain. The PCRTM fast radiative transfer model provides the principal component (PC) scores of an IASI radiance spectrum and the derivatives of the PC scores with respect to atmospheric parameters. Since the principal components are orthogonal to each other, relatively small number of PC scores are needed to capture the information content of the radiance spectrum. By performing radiative transfer modeling and retrieval in EOF domain directly; the algorithm deals with much smaller dimension as compared to original radiance domain. The retrieval is very efficient and fast.

Paper Details

Date Published: 22 December 2006
PDF: 8 pages
Proc. SPIE 6405, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications, 64050L (22 December 2006); doi: 10.1117/12.694175
Show Author Affiliations
Xu Liu, NASA Langley Research Ctr. (United States)
Daniel K. Zhou, NASA Langley Research Ctr. (United States)
Allen Larar, NASA Langley Research Ctr. (United States)
William L. Smith, Hampton Univ. (United States)
Peter Schluessel, EUNETSAT (Germany)


Published in SPIE Proceedings Vol. 6405:
Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications
William L. Smith; Allen M. Larar; Tadao Aoki; Ram Rattan, Editor(s)

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