The NASA Carbon Monitoring System Flux (CMS-Flux) is a global carbon cycle data assimilation system that quantifies the spatial and process drivers of atmospheric CO2. To that end, CMS-Flux provides a framework to constrain a suite of terrestrial, ocean, atmospheric, and anthropogenic carbon cycle models with a diverse set of satellite observations enabled by state-of-the-art assimilation algorithms. This framework leads to a consistent, comprehensive description of the carbon cycle that enables process understanding and improved prediction.

The NASA CMS methane project utilizes the same assimilation and chemical transport modeling capabilities as CMS-Flux but focuses on satellite and ground measurements of methane and corroborative tracers in conjunction with state-of-the-art “bottom-up” inventories of anthropogenic and natural methane emissions. These inventories are available to initialize “top-down” flux estimates and contribute to local and regional methane budgets.

We encourage you to review the publications describing CMS-Flux and CMS Methane to understand its capabilities and limitations. A data portal is available to download component fluxes and user description.