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WIND
*ANTARCTIC REGIONS
2
ATMOSPHERIC TEMPERATURE
2
Ice and Permafrost
2
Meteorology
2
POLAR REGIONS
2
SEA ICE
2
Snow
2
(*SEA ICE
1
*CLIMATE
1
*CLIMATE CHANGE
1
*GREENLAND
1
*ROSS SEA
1
*SEA ICE
1
AERIAL RECONNAISSANCE
1
AIR TEMPERATURE
1
ANTARCTIC REGIONS
1
ANTARCTIC REGIONS)
1
ARCTIC REGIONS
1
BIOLOGICAL TRENDS
1
BIOLOGY
1
CARGO VEHICLES
1
CIRCULATION
1
CIRCUMPOLAR CIRCULATION
1
CLIMATE TRENDS
1
DECREASED GLACIAL EXTENT
1
DEEP FREEZE OPERATION
1
DISTRIBUTION
1
DRIFT
1
ENVIRONMENTAL CHANGE
1
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