Articles | Volume 15, issue 3
Methods for assessment of models
16 Feb 2022
Methods for assessment of models |  | 16 Feb 2022

Definitions and methods to estimate regional land carbon fluxes for the second phase of the REgional Carbon Cycle Assessment and Processes Project (RECCAP-2)

Philippe Ciais, Ana Bastos, Frédéric Chevallier, Ronny Lauerwald, Ben Poulter, Josep G. Canadell, Gustaf Hugelius, Robert B. Jackson, Atul Jain, Matthew Jones, Masayuki Kondo, Ingrid T. Luijkx, Prabir K. Patra, Wouter Peters, Julia Pongratz, Ana Maria Roxana Petrescu, Shilong Piao, Chunjing Qiu, Celso Von Randow, Pierre Regnier, Marielle Saunois, Robert Scholes, Anatoly Shvidenko, Hanqin Tian, Hui Yang, Xuhui Wang, and Bo Zheng

Data sets

WCRP Coupled Model Intercomparison Project (Phase 6) World Climate Research Programme (WCRP)

Data products Integrated Carbon Observation System (ICOS)

Land-Use Harmonization2 (LUH2) L. Chini, G. Hurtt, S. Frolking, and R. Sahajpal

RECCAP-2 Regional Land Data Exchange Portal RECCAP-2

Model code and software

Ocean chapter of RECCAP-2 J. Hauck and N. Gruber

Short summary
The second phase of the Regional Carbon Cycle Assessment and Processes (RECCAP) will provide updated quantification and process understanding of CO2, CH4, and N2O emissions and sinks for ten regions of the globe. In this paper, we give definitions, review different methods, and make recommendations for estimating different components of the total land–atmosphere carbon exchange for each region in a consistent and complete approach.