Soil carbon (C) is a critical component of Earth system models (ESMs), and its diverse representations are a major source of the large spread across models in the terrestrial C sink from the third to fifth assessment reports of the Intergovernmental Panel on Climate Change (IPCC). Improving soil C projections is of a high priority for Earth system modeling in the future IPCC and other assessments.
Luo, Y., Ahlström, A., Allison, S. D., Batjes, N. H., Brovkin, V., Carvalhais, N., ... Finzi, A. (2016). Towards more realistic projections of soil carbon dynamics by Earth System Models. Global Biogeochemical Cycles, 30(1), 40-56. https://doi.org/10.1002/2015GB005239