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*ARCTIC OCEAN
Ice and Permafrost
2
NORTHWEST PASSAGE
2
Snow
2
*ARCTIC REGIONS
1
*ICE BREAKUP
1
*ICE FORMATION
1
*ICE-FREE ARCTIC
1
*NAVAL OPERATIONS
1
*NAVIGABLE ARCTIC WITH ICE INFESTED WATERS
1
*REMOTE DETECTION
1
ACQUISITION
1
ARCTIC CHANGE
1
Active & Passive Radar Detection & Equipment
1
BATTLE GROUP TRANSIT
1
CHANGE DETECTION
1
CLASSIFICATION
1
CLIMATE CHANGE
1
COMMAND AND CONTROL SYSTEMS
1
COMMUNICATION AND RADIO SYSTEMS
1
DETECTORS
1
DRUG SMUGGLING
1
FREEDOM OF NAVIGATION
1
FREEZING
1
GLACIERS
1
GLOBAL WARMING
1
GREENHOUSE EFFECT
1
ICE
1
ICE EDGE DETECTION
1
ICE EXTENT
1
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