Short Name:
MOD09GA

MODIS/Terra Surface Reflectance Daily L2G Global 1km and 500m SIN Grid V006

The MOD09GA Version 6 product provides an estimate of the surface spectral reflectance of Terra MODIS Bands 1-7 corrected for atmospheric conditions such as gasses, aerosols, and Rayleigh scattering. Provided along with the 500 m reflectance and four observation bands are a set of nine 1 km observation bands. The reflectance layers form the MOD09GA are used as the source data for many of the MODIS land products. Validation at stage 3 has been achieved for all MODIS Surface Reflectance products. Improvements/Changes from Previous Versions • Improvement to the aerosol retrieval and correction algorithm and use of new aerosol retrieval Look up Tables. • Refinements to the internal snow, cloud, and cloud shadow detection algorithms. Uses BRDF database to better constraint the different threshold used. • Processes ocean bands to create a new Surface Reflectance Ocean product and provide QA data sets for these bands. • Improved discrimination of salt pans from cloud and snow and flag salt pan in QA band.

Map of Earth