Abstract:
The MODIS Surface Reflectance products are 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.
MOD09GA provides Bands 1-7 in a daily gridded L2G product in the Sinusoidal
projection, which includes 500-meter reflectance values and 1-kilometer
observation and geolocation statistics. 500-meter Science Data Sets provided
by this product include reflectance for Bands 1-7, a quality rating,
observation coverage, observation number, and 250-meter scan information.
1-kilometer Science Data Sets provided include number of observations, quality
state, sensor angles, solar angles, geolocation flags, and orbit pointers.
Data Set Characteristics:
Area: ~10 degrees x 10 degrees lat/long
Image Dimensions: 2400 x 2400 rows/columns
File Size: ~270 MB
Resolution: 500 meters
Projection: Sinusoidal
Data Format: HDF-EOS
Science Data Sets (SDS HDF Layers): 21
Version-5 MODIS/Aqua Surface Reflectance products are validated, meaning that
product uncertainties are well defined over a range of representative
conditions. Although there may be later improved versions, these data are
ready for use in scientific publications.