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"The permeability of permafrost as it thaws and refreezes is unknown. […] These initial results indicate that the protective gas seal previously provided by permafrost will be lost as permafrost thaws."

Glover et al. (2026). doi.org/10.1029/2025EF007232

#Artic #climate #climateChange #globalWarming #permafrost #emissions #carbon #feedback

Feedback of global warming:

"We treat each WIE source independently and do not account for interactions between them, such as permafrost thaw expanding wetland extent through thermokarst formation, or the recursive effect where WIE-induced warming itself drives further WIE".

"For CO2, which accumulates in the atmosphere, a sustained emission rate produces a radiative forcing that increases over time, so the cumulative impact on carbon budgets depends on the duration of elevated temperature, not just the magnitude of warming. When we evaluate our permafrost CO2 results to compare with the AR6 framework, we find that the correction terms are 60, 123, and 138 Pg CO2 ℃⁻¹ for SSP1-2.6, SSP2-4.5, and SSP4-6.0, respectively".

excerpt from Sam Abernethy et al. (2026). doi.org/10.22541/essoar.150023…

#climateChange #globalWarming #permafrost #emissions #carbon #wildfires #wetlands #methane #CO2