PMID- 19582025 OWN - NLM STAT- MEDLINE DCOM- 20090727 LR - 20190516 IS - 1094-4087 (Electronic) IS - 1094-4087 (Linking) VI - 16 IP - 23 DP - 2008 Nov 10 TI - Intercomparison of two BRDF models in the estimation of the directional emissivity in MIR channel from MSG1-SEVIRI data. PG - 19310-21 AB - 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 microm) 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 approximately 0.01 and approximately 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. FAU - Jiang, Geng-Ming AU - Jiang GM AD - Laboratoire des Sciences de l'Image, de l'Informatique et de la Teledetection, Parc d'Innovation, Illkirch, France. FAU - Li, Zhao-Liang AU - Li ZL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Opt Express JT - Optics express JID - 101137103 SB - IM MH - *Algorithms MH - Computer Simulation MH - Environmental Monitoring/*methods MH - Infrared Rays MH - *Models, Theoretical MH - Photometry/*methods MH - Reproducibility of Results MH - Sensitivity and Specificity EDAT- 2009/07/08 09:00 MHDA- 2009/07/28 09:00 CRDT- 2009/07/08 09:00 PHST- 2009/07/08 09:00 [entrez] PHST- 2009/07/08 09:00 [pubmed] PHST- 2009/07/28 09:00 [medline] AID - 174426 [pii] AID - 10.1364/oe.16.019310 [doi] PST - ppublish SO - Opt Express. 2008 Nov 10;16(23):19310-21. doi: 10.1364/oe.16.019310.