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(*SEA ICE
6
FREEZING
5
Ice and Permafrost
5
OBSERVATION AIRCRAFT
5
SEA ICE)
5
Snow
5
(*AERIAL RECONNAISSANCE
4
GREENLAND SEA
4
ICE ISLANDS
4
TABLES(DATA)
4
*ARCTIC OCEAN)
3
ARCTIC OCEAN)
3
ARCTIC REGIONS
3
DISTRIBUTION
3
MELTING
3
Physical and Dynamic Oceanography
3
AERIAL PHOTOGRAPHY
2
AERIAL RECONNAISSANCE
2
AIRBORNE
2
ALASKA
2
BIRDS EYE MISSIONS(POLAR RESEARCH FLIGHTS)
2
CHUKCHI SEA
2
FLIGHT PATHS
2
METEOROLOGICAL RADAR
2
POLAR REGIONS
2
SEA WATER
2
SURFACE TEMPERATURE
2
THERMOMETERS
2
THICKNESS
2
VISIBILITY
2
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Arctic
7
Arctic Ocean
Greenland
Sea ice
7
ice pack
Ice
5
permafrost
5
Greenland Sea
4
Iceland
4
Alaska
2
Arctic Basin
2
Banks Island
2
Chukchi
2
Chukchi Sea
2
Wrangel Island
2
Archipelago
1
Baffin
1
Baffin Bay
1
Barents Sea
1
Canadian Archipelago
1
East Greenland
1
Franz Josef Land
1
Iceberg*
1
Parry Channel
1
Scoresby Sund
1
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