The MODIS Surface Reflectance products provide an estimate of the surface spectral reflectance as it would be measured at ground level in the absence of atmospheric scattering or absorption. Low-level data are corrected for atmospheric gases and aerosols, yielding a level-2 basis for several higher-order gridded level-2 (L2G) and level-3 products.
MOD09GQ provides Bands 1 and 2 at a 250-meter resolution in a daily gridded L2G product in the Sinusoidal projection. Science Data Sets provided for this product include reflectance for Bands 1 and 2, a quality assurance rating, observation coverage, and observation number. This product is meant to be used in conjunction with the MOD09GA where important quality assurance and viewing geometry information is stored.
Collection-5 MODIS/Terra Surface Reflectance products are Validated Stage 2, meaning that accuracy has been assessed over a widely distributed set of locations and time periods via several ground-truth and validation efforts.
||MODIS Collection 6.1 - Level 1, Atmosphere, Land (ArchiveSet 61)
|File Naming Convention:
- YYYYDDD = Year and Day of Year of acquisition
- hHH = Horizontal tile number (0-35)
- vVV = Vertical tile number (0-17)
- CCC = Collection number
- YYYYDDDHHMMSS = Production Date and Time
||Eric Vermote, Robert Wolfe - NASA GSFC and MODAPS SIPS - NASA. (2015). MYD09GQ MODIS/Aqua Surface Reflectance Daily L2G Global 250m SIN Grid. NASA LP DAAC. http://doi.org/10.5067/MODIS/MYD09GQ.006
||Climate Change, Atmospheric Correction, Aerosol Optical Depth/Thickness, Reflectance