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Arctic
4
Laptev Sea
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Mackenzie Delta
laptev
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permafrost
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Active layer monitoring
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Alaska
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GTN-P
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Tundra
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Yakutsk
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Yamal Peninsula
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taiga
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Global Terrestrial Network for Permafrost
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International Permafrost Association
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Siberia
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lena delta
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IPY
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International Polar Year
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Polar Science
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