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PGE 152: Water detection, from MOD09 swath granules.
PGE 155: Map swath granules to output grid (lat/lon, 10x10° tiles, “heavy”).
PGE 170: Select and retain best within-swath pixel (“lite”: contains one layer for every swath overpass, for a given pixel).
PGE 159: (Level-3) Composites (over time), applies thresholding, masks, and compares to reference water to identify flood.
1,2,and 3-day composites
MCDWD implementation includes data from all overlapping swaths...