This is a branched version of the Energy Exascale Earth System Model (E3SM), a state-of-the-art fully coupled model of the Earth's climate including important biogeochemical and cryospheric processes. E3SM is intended to address the most challenging and demanding climate-change research problems and Department of Energy mission needs while efficiently using DOE Leadership Computing Facilities. The main branch of E3SM is here: https://github.com/E3SM-Project/E3SM
The ELM-ERW branch is developed for modeling the large-scale carbon dioxide removal potential of spreading silicate rock powder on soil. Specifically, it considers the following processes:
- primary mineral dissolution
- CO2 dissolution and cation exchange equilibria
- advection-diffusion and runoff loss of major ions
- secondary mineral formation
- soil pH dynamics and feedback to soil N2O and NO emissions
- phosphorus release during weathering and feedback to ecosystem productivity
The model has been tested in the land-only mode and runs at a speed commensurate with the original E3SM Land Model.
This work is supported by the project "Coupled Ecosystem-and-engineering Decision-making Framework for Enhanced Weathering", under Oak Ridge National Laboratory (ORNL)'s Laboratory Directed Research and Development (LDRD) program.
The E3SM model is available under a BSD 3-clause license. Please see LICENSE for details.