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FREEZING
ICE ISLANDS
2
Ice and Permafrost
2
Snow
2
THICKNESS
2
(*SEA ICE
1
(*SNOW
1
(*WEATHER FORECASTING
1
*ARCTIC REGIONS)
1
AERIAL RECONNAISSANCE
1
ANTARCTIC REGIONS)
1
ARCTIC OCEAN
1
ATMOSPHERIC TEMPERATURE
1
BYRD STATION
1
COLD WEATHER TESTS
1
CRACKS
1
DENSITY
1
DRILLING
1
FLIGHT PATHS
1
ICE
1
ICE FORECASTING
1
MCMURDO SOUND
1
MELTING
1
METEOROLOGICAL PHENOMENA
1
METEOROLOGICAL SATELLITES
1
Meteorology
1
PERIODIC VARIATIONS
1
POLAR REGIONS
1
ROSS SEA
1
SEA ICE)
1
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