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4 Cards in this Set
- Front
- Back
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The Arctic Tundra Overview |
- 8 million km2 - Canada, Alaska & Siberia - 8-9 months negative heat balance |
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Arctic Tundra Features and Conditions |
- During winter can be blacked out for weeks at a time - 40C - Low precipitation - Lack of vegetation and animals |
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Water Cycle |
- 50-350mm annual rainfall - Lack of humidity to form clouds - Low transpiration - Low rates of evaporation |
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Carbon Cycle |
- Permafrost large carbon sink 1600GT - Slow decomposition - Soil makes up 5x of carbon compared to surface - NPP 200g/m3/year - Only 4 - 29 Tonnes of biomass - Unfrozen ground can release CO2 & CH4 |
