Over the years, ERSEM has been developed using funding from a wide variety of sources and projects. The current codebase was developed in the NERC/Defra Shelf Seas Biogeochemistry Grant: [NE/K001876/1] and Marine Ecosystems Research Programmes Grant: [NE/L003066/1]. Today, ERSEM maintenance and development continues to be funded through the NERC Climate Linked Atlantic Sector Science programme Grant [NE/R015953/1] and a combination of UK Research and Innovation (UKRI) and European Research Council (ERC) funded research projects.