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*ARCTIC OCEAN
1
*WEATHER FORECASTING
AERIAL RECONNAISSANCE
1
ARCTIC REGIONS
1
CRACKS
1
DIURNAL VARIATIONS
1
ELECTRONIC AIRCRAFT
1
FLIGHT PATHS
1
FREEZING
1
GREENLAND
ICE ISLANDS
1
Ice and Permafrost
MELTING
1
METEOROLOGICAL RADAR
1
Meteorology
1
OBSERVATION AIRCRAFT
1
SEA ICE
1
Snow
1
THICKNESS
1
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