The MEMS model is designed to implement soil organic matter formation hypotheses that represent our best understanding of carbon cycling within the soil. However, as with all mathematical models, MEMS is a simplified abstraction of the complex mechanisms that control the flow of carbon from inputs into soil. Consequently, MEMS relies on several assumptions (see Robertson et al. 2019) and its simulation outputs include inherent uncertainty. The primary purpose of the MEMS model is to provide ecosystem scientists with a tool that can be used to evaluate the impacts of changes in management and climate on the flows of carbon in varied edaphic conditions. The initial model version (MEMS V1.0) is limited in its application to real world situations but MEMS 2.0 expands initial capabilities and will be available via the consortium soon. Continued development of MEMS is scheduled to include adopting a multi-layer approach with explicit hydrological cycling and root litter decomposition simulations to depth. Furthermore, an explicit nitrogen sub-model will complement the carbon sub-model to facilitate feedbacks between the two.