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Ice and Permafrost
8
Snow
8
COASTAL REGIONS
6
*SEA ICE
5
ALASKA
5
ARCTIC OCEAN
4
TERRAIN
4
(*ICE
3
(*WEATHER FORECASTING
3
*ARCTIC REGIONS
3
AERIAL RECONNAISSANCE
3
BIRDS EYE PROJECT
3
DISTRIBUTION
3
DIURNAL VARIATIONS
3
ICE ISLANDS
3
MARINE METEOROLOGY
3
Meteorology
3
PHOTOGRAPHIC RECORDING SYSTEMS
3
PLAN POSITION INDICATORS
3
POLAR REGIONS
3
SEA ICE
3
SEA WATER
3
SOURCES
3
*ARCTIC OCEAN
2
ARCTIC OCEAN)
2
ARCTIC REGIONS
2
ARCTIC REGIONS)
2
CONGRESS
2
CONTINENTAL SHELVES
2
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Alaska
Arctic
9
Arctic Ocean
9
Ice
permafrost
9
Sea ice
8
Climate change
4
Greenland
4
Arctic Basin
3
Lomonosov Ridge
3
Barrow
2
laptev
2
Bering Sea
1
Chukchi
1
Chukchi Sea
1
East Greenland
1
Franz Josef Land
1
Human health
1
Lincoln Sea
1
Northern Sea Route
1
Northwest passage
1
Point Barrow
1
Spitzbergen
1
Tundra
1
ice covered waters
1
wedge*
1
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