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Ice and Permafrost
6
POLAR REGIONS
Snow
6
(*SEA ICE
3
ANTARCTIC REGIONS)
3
ATMOSPHERIC TEMPERATURE
3
FREEZING
3
ICEBREAKERS
3
MARINE TRANSPORTATION
3
MCMURDO SOUND
3
PERIODIC VARIATIONS
3
PREDICTIONS
3
ROSS SEA
3
ANTARCTIC REGIONS
2
DATA PROCESSING
2
GLACIERS
2
MELTING
2
PATTERNS
2
ROUGHNESS
2
SEA ICE
2
SEA WATER
2
TEMPERATURE
2
THICKNESS
2
WEATHER FORECASTING
2
WIND
2
(*AERIAL RECONNAISSANCE
1
*ANTARCTIC REGIONS
1
*CLIMATE CHANGE
1
*ICE
1
*LANDING FIELDS
1
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