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*ARCTIC OCEAN
1
*ICE FORECASTING
1
*SEA ICE
ACCURACY
1
CRACKS
1
DRIFT
1
FREEZING
ICE ISLANDS
1
Ice and Permafrost
1
MARINE TRANSPORTATION
1
MELTING
1
NAVIGATION
1
Physical and Dynamic Oceanography
1
Snow
1
THICKNESS
1
TRANSLATIONS
1
USSR
1
VELOCITY
1
WATER TRAFFIC
1
WEATHER FORECASTING
1
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