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AERIAL RECONNAISSANCE
1
ARCTIC OCEAN
1
ARCTIC REGIONS
DENMARK STRAIT
1
FLIGHT PATHS
1
FREEZING
1
GREENLAND SEA
1
ICE ISLANDS
1
INFRARED SCANNING
1
Ice and Permafrost
1
LASERS
1
MELTING
1
Meteorology
NAVIGATION CHARTS
1
OBSERVATION AIRCRAFT
1
OCEANOGRAPHIC SHIPS
1
PATROL CRAFT
1
SEA ICE
Snow
1
THICKNESS
1
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