Quantifying uncertainties of permafrost carbon-climate feedbacks ...

• Main Authors: Burke, Eleanor J., Ekici, Altug, Huang, Ye, Chadburn, Sarah E., Huntingford, Chris, Ciais, Philippe, Friedlingstein, Pierre, Peng, Shushi, Krinner, Gerhard
• Format: Text
• Language: unknown
• Published: European Geosciences Union 2017
• Subjects: 530 Physics; permafrost
• Online Access: https://dx.doi.org/10.48350/158628; https://boris.unibe.ch/158628/

The land surface models JULES (Joint UK Land Environment Simulator, two versions) and ORCHIDEE-MICT (Organizing Carbon and Hydrology in Dynamic Ecosystems), each with a revised representation of permafrost carbon, were coupled to the Integrated Model Of Global Effects of climatic aNomalies (IMOGEN) intermediate-complexity climate and ocean carbon uptake model. IMOGEN calculates atmospheric carbon dioxide (CO2) and local monthly surface climate for a given emission scenario with the land–atmosphere CO2 flux exchange from either JULES or ORCHIDEE-MICT. These simulations include feedbacks associated with permafrost carbon changes in a warming world. Both IMOGEN–JULES and IMOGEN–ORCHIDEE-MICT were forced by historical and three alternative future-CO2-emission scenarios. Those simulations were performed for different climate sensitivities and regional climate change patterns based on 22 different Earth system models (ESMs) used for CMIP3 (phase 3 of the Coupled Model Intercomparison Project), allowing us to ...