Abstract
The RECCAP2 project aims at compiling budgets of greenhouse gas (CO2, CH4 and N2O) for different regions across the globe. In RECAAP2-permafrost we complied bottom-up and top-down budgets for the time period 2000–2020 across the northern Arctic and Boreal permafrost domain. In this talk I present the main findings from this project and outline how the lessons learned may be used to improve the next iteration planned in RECCAP3. We were not able to reconcile budgets from bottom-up models with budgets determined from global atmospheric inversions. But we can conclude that the region is close to neutral, or a net source of warming. Emissions of CH4 from inland waters and wetlands, as well as CO2 emissions from fires are important sources.
