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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 23 — Nov. 10, 2008
  • pp: 19310–19321

Intercomparison of Two BRDF Models in the Estimation of the Directional Emissivity in MIR Channel From MSG1-SEVIRI Data

Geng-Ming Jiang and Zhao-Liang Li  »View Author Affiliations


Optics Express, Vol. 16, Issue 23, pp. 19310-19321 (2008)
http://dx.doi.org/10.1364/OE.16.019310


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Abstract

This work intercompared two Bi-directional Reflectance Distribution Function (BRDF) models, the modified Minnaert’s model and the RossThick-LiSparse-R model, in the estimation of the directional emissivity in Middle Infra-Red (MIR) channel from the data acquired by the Spinning Enhanced Visible and Infra-Red Imager (SEVIRI) onboard the first Meteosat Second Generation (MSG1). The bi-directional reflectances in SEVIRI channel 4 (3.9 µm) were estimated from the combined MIR and Thermal Infra-Red (TIR) data and then were used to estimate the directional emissivity in this channel with aid of the BRDF models. The results show that: (1) Both models can relatively well describe the non-Lambertian reflective behavior of land surfaces in SEVIRI channel 4; (2) The RossThick-LiSparse-R model is better than the modified Minnaert’s model in modeling the bi-directional reflectances, and the directional emissivities modeled by the modified Minnaert’s model are always lower than the ones obtained by the RossThick-LiSparse-R model with averaged emissivity differences of ~0.01 and ~0.04 over the vegetated and bare areas, respectively. The use of the RossThick-LiSparse-R model in the estimation of the directional emissivity in MIR channel is recommended.

© 2008 Optical Society of America

OCIS Codes
(100.3190) Image processing : Inverse problems
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.4991) Remote sensing and sensors : Passive remote sensing

ToC Category:
Remote sensing and sensors

History
Original Manuscript: July 8, 2008
Revised Manuscript: August 10, 2008
Manuscript Accepted: August 27, 2008
Published: November 7, 2008

Citation
Geng-Ming Jiang and Zhao-Liang Li, "Intercomparison of Two BRDF Models in the Estimation of the Directional Emissivity in MIR Channel From MSG1-SEVIRI Data," Opt. Express 16, 19310-19321 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-23-19310


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