Snow cover from spectral mixture analysis algorithm SCAG: OLI and MODIS

This data is snow cover fraction from the Snow Covered Area and Grain Size (SCAG) model for Landsat OLI and Terra MODIS. Terra MODIS data are gap filled to better represent on the ground snow. The data was used in the a publication for The Cyrosphere titled Landsat, MODIS, and VIIRS snow cover mapping algorithm performance as validated by airborne lidar datasets, doi.org/10.5194/tc-2022-159. Geotiffs and PNG files for Landsat 8 are self describing. The .mat files for Terra MODIS contain three variables:

snow_fraction: the gap filled snow fraction stored as uint8 with 255 as the NoData value and valid values between and including 0 to 100.

mstruct: projection structure describing the standard MODIS tile projection structure. The data represent data from tile h08v05 and h09v05

RefMatrix: affine spatial referencing matrix for the snow_fraction grid with the projection described by mstruct