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CRACKS
2
FREEZING
2
Ice and Permafrost
MELTING
2
Snow
2
WEATHER FORECASTING
(*AERIAL RECONNAISSANCE
1
(*SEA ICE
1
*ARCTIC OCEAN
1
*ICE FORECASTING
1
*SEA ICE
1
ACCURACY
1
ARCTIC OCEAN)
1
ARCTIC REGIONS
1
BAFFIN ISLAND
1
C-121 AIRCRAFT
1
CANADA
1
DIURNAL VARIATIONS
1
DRIFT
1
GREENLAND SEA
1
ICE ISLANDS
1
MARINE TRANSPORTATION
1
NAVIGATION
1
Physical and Dynamic Oceanography
1
SEA ICE)
1
SEA WATER
1
THICKNESS
1
TRANSLATIONS
1
USSR
1
VELOCITY
1
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