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Arctic
2
Environmental sciences
GE1-350
2
Environmental technology. Sanitary engineering
1
GC1-1581
1
NSIDC ice index
1
Oceanography
1
Physics
1
Q
1
QC1-999
1
Science
1
TD1-1066
1
climate indicators
1
ice-edge latitude
1
melt season
1
passive microwave
1
sea ice
1
sea-ice extent
1
seasonal ice zone
1
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