Articles | Volume 9, issue 2
Geosci. Model Dev., 9, 841–855, 2016
https://doi.org/10.5194/gmd-9-841-2016
Geosci. Model Dev., 9, 841–855, 2016
https://doi.org/10.5194/gmd-9-841-2016
Model experiment description paper
01 Mar 2016
Model experiment description paper | 01 Mar 2016

Towards a representation of priming on soil carbon decomposition in the global land biosphere model ORCHIDEE (version 1.9.5.2)

Bertrand Guenet et al.

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Short summary
We present a simple conceptual model of soil carbon decomposition (PRIM) able to reproduce priming experiments. Parameters were optimized using a Bayesian framework and evaluated against another set of soil incubation. PRIM better fit data than the original, CENTURY-type soil decomposition model. We then compared both models incorporated into the global land biosphere model ORCHIDEE. Both versions reproduced observed decay litter rates, but only ORCHIDEE-PRIM could simulate the observed priming.