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(*AERIAL RECONNAISSANCE
2
(*SEA ICE
2
ALASKA
2
ARCTIC OCEAN
2
ARCTIC REGIONS)
DISTRIBUTION
2
Ice and Permafrost
2
OBSERVATION AIRCRAFT
SEA WATER
2
Snow
2
AIRBORNE
1
C-121 AIRCRAFT
1
C-121K AIRCRAFT
1
CHUKCHI SEA
1
CLOUDS
1
FLIGHT PATHS
1
FREEZING
1
GREENLAND SEA
1
ICE)
1
MELTING
1
METEOROLOGICAL CHARTS
1
NAVAL AIRCRAFT
1
POLAR REGIONS
1
RADAR EQUIPMENT
1
REMOTE AREAS
1
SEA ICE)
1
SURFACE TEMPERATURE
1
THERMOMETERS
1
THICKNESS
1
VISIBILITY
1
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