As a Research AST, Climate and Radiation Studies with the Global Modeling Assimilation Office (GMAO), you will be responsible for the development of the GEOS-Composition Forecasting (GEOS-CF) system. This includes research on constituent assimilation and developing efficient forecast models for atmospheric composition. You will coordinate activities with GMAO colleagues and external groups. You will also integrate new developments into updated versions of GEOS-CF.