denotes an external product not archived by NSIDC
ICE DEFORMATION
ICE DEPTH/THICKNESS
ICE EDGES
ICE EXTENT
ICE FLOES
ICE GROWTH/MELT
ICE ROUGHNESS
ICE TYPES
ICEBERGS
LEADS
POLYNYAS
REFLECTANCE
SEA ICE AGE
SEA ICE CONCENTRATION
SEA ICE ELEVATION
SEA ICE MOTION
SNOW DEPTH