Dear CF Metadata Users Group,
Through observations and analysis, GOES-R weather products produce
binary masks for: aerosols, smoke, dust and clouds. No coordinate
value is warranted (i.e. CF Metadata standard surface_snow_binary_mask)
for any of these four proposed quantities, since a complex set of tests
for each case, such as using brightness temperatures, are used to derive
signatures of the four atmospheric constituents. The proposed masks are
analogous and defined in a similar way as the CF Metadata standard
names: land_binary_mask and sunlit_binary_mask.
aerosol_binary_mask: X_binary_mask has 1 where condition X is met, 0
elsewhere. 1 = aerosols present, 0 = aerosolsabsent
smoke_binary_mask: X_binary_mask has 1 where condition X is met, 0
elsewhere. 1 = smoke present, 0 = smoke absent
dust_binary_mask: X_binary_mask has 1 where condition X is met, 0
elsewhere. 1 = dust present, 0 = dust absent
cloud_binary_mask: X_binary_mask has 1 where condition X is met, 0
elsewhere. 1 = cloud present, 0 = cloud absent (clear)
Please accept these four mask names for inclusion into the CF Metadata
standard.
Sincerely,
Charles Paxson
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