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9
EARTH SCIENCE
GEOGRAPHIC REGION >
9
POLAR
9
ANTARCTICA
7
ATMOSPHERE
6
climatologyMeteorologyAtmosphere
6
ARCTIC
5
OCEAN >
5
AIR TEMPERATURE
4
ANTARCTICA >
4
ATMOSPHERIC ELECTRICITY
4
DRIFTING BUOYS
4
ELECTRIC FIELD
4
OCEAN CIRCULATION
4
OCEAN CURRENTS
4
PACK ICE
4
SEA ICE
4
SEA ICE MOTION
4
SOUTHERN OCEAN
4
oceans
4
ELECTRIC FIELDS/ELECTRIC CURRENTS
3
GROUND-BASED OBSERVATIONS
3
IONOSPHERE/MAGNETOSPHERE DYNAMICS
3
SUN-EARTH INTERACTIONS
3
Vostok
3
ACE/CRC
2
AIR PRESSURE
2
AMD
2
AMD/AU
2
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Antarc*
9
Antarctic
9
Antarctica
Arctic
9
Australian Antarctic Division
Southern Ocean
5
Alfred Wegener Institute
4
Sea ice
4
Alaska
2
Arctic and Antarctic Research Institute
2
British Antarctic Survey
2
IPY
2
International Arctic Research Center
2
International Arctic Research Center (IARC)
2
International Polar Year
2
National Institute of Polar Research
2
Scott Polar Research Institute
2
Weddell Sea
2
ice pack
2
Arctic Ocean
1
Global warming
1
Macquarie Island
1
McDonald Islands
1
permafrost
1
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