GFM_EM

Layer name	Exclusion Mask (GFM)
Tag	Flood
Folder	Eo Satellite
Source	GFM
Description	The Exclusion Mask indicates the pixel locations where the SAR data could not deliver the necessary information for a robust flood delineation. It combines static effects leading to no-sensitivity in flood mapping water-look-alikes strong topography radar shadows For its generation, we implement the methods proposed in section 1, following the identified problems of SAR-based flood mapping. The parameter database stores for all locations on pixel basis the areas excluded by the four effect groups, with the radar shadow layer per local Sentinel-1 orbit configurations (up to six per location). During NRT operation, the relative orbit is determined from the S-1 metadata, and the respective Exclusion Mask layers are subset to the extent of the processed Sentinel-1 scene and form a single binary mask for exclusion areas. The Exclusion Mask layer values are described below.
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Properties
Available variables	Exclusion Mask
Available accumulations
Available interpolation algorithms
Available filters
Spatial aggregations