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(*SEA ICE
Ice and Permafrost
10
PREDICTIONS
Snow
10
THICKNESS
6
SEA ICE)
4
(*AERIAL RECONNAISSANCE
3
ANTARCTIC REGIONS)
3
DATA PROCESSING
3
FREEZING
3
ICE FORECASTING
3
ICEBREAKERS
3
MCMURDO SOUND
3
MELTING
3
ACCURACY
2
ARCTIC OCEAN)
2
ATMOSPHERIC TEMPERATURE
2
ICE
2
LAKES
2
MARINE TRANSPORTATION
2
METEOROLOGICAL SATELLITES
2
Mechanics
2
OBSERVATION AIRCRAFT
2
PERIODIC VARIATIONS
2
POLAR REGIONS
2
SEA WATER
2
TEMPERATURE
2
(*GREENLAND
1
(*ICE ISLANDS
1
(*MERCHANT VESSELS
1
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Ice
Sea ice
10
permafrost
10
Antarc*
4
Antarctic
4
Arctic
3
McMurdo Sound
3
Arctic Ocean
2
Greenland
2
Greenland Sea
2
Ice Sheet
2
Ross Sea
2
Antarctica
1
Arctic Basin
1
Baffin
1
Baffin Island
1
Denmark Strait
1
Ice Shelf
1
Newfoundland
1
North Atlantic
1
North Pole
1
Sondre Stromfjord
1
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