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ARCTIC OCEAN
2
Ice and Permafrost
2
Snow
THICKNESS
2
(*AERIAL RECONNAISSANCE
1
(*ARCTIC REGIONS
1
(*ICE
1
(*SEA ICE
1
AERIAL RECONNAISSANCE)
1
AIRBORNE
1
ALASKA
1
ARCTIC REGIONS)
1
BIRDS EYE PROJECT
1
C-121 AIRCRAFT
1
CHUKCHI SEA
1
COASTAL REGIONS
1
DISTRIBUTION
1
DIURNAL VARIATIONS
1
FLIGHT PATHS
1
FREEZING
1
GREENLAND
1
GREENLAND SEA
1
ICE ISLANDS
1
ICE)
1
MAPS
1
MELTING
1
METEOROLOGICAL CHARTS
1
METEOROLOGICAL PHENOMENA
1
OBSERVATION AIRCRAFT
1
OCEANOGRAPHIC DATA
1
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