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Global Infrared Land Surface Emissivity: UW-Madison Baseline Fit Emissivity Database | <
| This global database of infrared land surface emissivity is derived using input from the Moderate Resolution Imaging Spectroradiometer (MODIS) operational land surface emissivity product (MOD11). The baseline fit method (Seemann et al., 2007), based on a conceptual model developed from laboratory measurements of surface emissivity, is applied to fill in the spectral gaps between the six emissivity wavelengths available in MOD11. The six available MOD11 wavelengths span only three spectral regions (3.8-4, 8.6, and 11-12 microns), while the retrievals of atmospheric temperature and moisture from satellite IR sounder radiances require surface emissivity at higher spectral resolution. Emissivity in the baseline fit database presented here is available globally at ten wavelengths (3.6, 4.3, 5.0, 5.8, 7.6, 8.3, 9.3, 10.8, 12.1, and 14.3 microns) with 0.05 degree spatial resolution. The wavelengths in the database were chosen as hinge points to capture as much of the shape of the higher resolution emissivity spectra as possible between 3.6 and 14.3 microns. |
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UW Baseline Fit Emissivity Database Software development: The algorithm - called UW HSR Emissivity Algorithm - to create a continuous spectral emissivity with high spectral resolution (HSR) from the UW BF Emissivity Database has been beta-tested and is available by request sent to Eva E. Borbas.
Seemann, S.W., E. E. Borbas, R. O. Knuteson, G. R. Stephenson, H.-L. Huang, 2008: Development of a Global Infrared Land Surface Emissivity Database for Application to Clear Sky Sounding Retrievals from Multi-spectral Satellite Radiance Measurements.J. Appl. Meteor. Climatol., Vol. 47, 108-123. Download here or request a preprint by mailed to you. Poster presented at AMS January 2006 (0.2 MB)Poster presented at AGU December 2006 (1.0 MB) Contact: |
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Eva Borbas (last update October 7 2008)