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SEA WATER
Ice and Permafrost
4
Physical and Dynamic Oceanography
4
Snow
4
*CHUKCHI SEA
3
ARCTIC OCEAN
3
SEA ICE
3
(*ICE
2
(*WEATHER FORECASTING
2
*OCEAN CURRENTS
2
ALASKA
2
ARCTIC REGIONS)
2
Acoustics
2
BIRDS EYE PROJECT
2
DISTRIBUTION
2
ICE ISLANDS
2
MELTING
2
Marginal sea ice zones
2
Meteorology
2
OBSERVATION AIRCRAFT
2
POLAR REGIONS
2
SALINITY
2
TEMPERATURE
2
TERRAIN
2
(*AERIAL RECONNAISSANCE
1
(*SEA ICE
1
*ARCTIC OCEAN
1
*ARCTIC OCEAN)
1
*ARCTIC REGIONS)
1
*BERING STRAIT
1
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