Carbon dioxide, Climate, Permafrost, Greenhouse gases, Emissions, Air pollution, Methane, Melting, Carbon, Atmosphere, Ice, Atmospheric models, Decomposition, Fluxes, Organic matter, Climate effects, Moisture content, Earth atmosphere, Thawing, Logging, Peatlands, ANAEROBIC CONDITIONS, Thermokarst, Permafrost soils, Surface wetness, Subsidence, Stores