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*SEA ICE
2
ALASKA
ARCTIC REGIONS
2
Ice and Permafrost
Snow
2
*PACK ICE
1
ARCTIC OCEAN
1
BERING SEA
1
CHARTS
1
CHUKCHI SEA
1
EDGES
1
ENVIRONMENTAL IMPACT
1
FORECASTING
1
GEOGRAPHIC DISTRIBUTION
1
ICE
1
Ice free areas
1
Icebergs
1
MODEL THEORY
1
NORTH PACIFIC OCEAN
1
OKHOTSK SEA
1
OPEN WATER
1
POSITION(LOCATION)
1
RANGE(EXTREMES)
1
SEASONAL VARIATIONS
1
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