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The normalization of surface anisotropy effects present in seviri reflectances by using the modis brdf method
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Proud, Simon Richard Rasmussen, Mads Olander Fensholt Sr., Rasmus Mutero, Wycliffe Shisanya Sr., Chris Anyamba, Assaf Schaaf, Crystal Mbow, Cheikh Pak, Ed Sandholt, Inge Zhang, Qingling |
| Copyright Year | 2014 |
| Description | A modified version of the MODerate resolution Imaging Spectroradiometer (MODIS) bidirectional reflectance distribution function (BRDF) algorithm is presented for use in the angular normalization of surface reflectance data gathered by the Spinning Enhanced Visible and InfraRed Imager (SEVIRI) aboard the geostationary Meteosat Second Generation (MSG) satellites. We present early and provisional daily nadir BRDFadjusted reflectance (NBAR) data in the visible and near-infrared MSG channels. These utilize the high temporal resolution of MSG to produce BRDF retrievals with a greatly reduced acquisition period than the comparable MODIS products while, at the same time, removing many of the angular perturbations present within the original MSG data. The NBAR data are validated against reflectance data from the MODIS instrument and in situ data gathered at a field location in Africa throughout 2008. It is found that the MSG retrievals are stable and are of high-quality across much of the SEVIRI disk while maintaining a higher temporal resolution than the MODIS BRDF products. However, a number of circumstances are discovered whereby the BRDF model is unable to function correctly with the SEVIRI observations-primarily because of an insufficient spread of angular data due to the fixed sensor location or localized cloud contamination. |
| File Size | 1115459 |
| Page Count | 14 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140010301 |
| Archival Resource Key | ark:/13960/t83j8g75t |
| Language | English |
| Publisher Date | 2014-01-01 |
| Access Restriction | Open |
| Subject Keyword | Seviri Surface Anisotropy Modis Imaging Spectrometers Position Location Africa Inversions Bidirectional Reflectance Surface Properties Infrared Radiation Temporal Resolution Modis Radiometry Distribution Functions Meteosat Satellite Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
