Funds from this grant support an effort by Louise Kellogg of the University of California, Davis to lead a multidisciplinary group of Deep Carbon Observatory (DCO) researchers in the development of the first stages of a Deep Carbon Earth Model that integrates existing geophysical knowledge with insights uncovered by the Deep Carbon Observatory. The project will involve representatives from each of the DCO’s four scientific communities—Reservoirs and Fluxes, Deep Energy, Deep Life, and Extreme Physics and Chemistry—as they come together to craft a series of interoperable modules that can be used to model the quantities, movements, origins, and forms of deep Earth carbon. Though a fully functional, predictive model is the ultimate goal, the project promises to provide several ancillary benefits to the larger DCO effort, including identifying gaps in existing knowledge, increasing communication between the DCO’s diverse communities, and establishing project-wide modeling protocols that can serve as the basis for both current and future modeling efforts.