Center for Global Change Science and MIT Joint Program on the Science and Policy of Global Change seek a postdoctoral associate to contribute to the team’s research in inverse modeling of the global atmosphere. The aim of the research is to develop and apply high-performance numerical models of the global atmosphere which can quantify the sensitivity of an observed quantity (e.g., concentrations of a CFC at a monitoring station) with regard to emissions elsewhere. This will be achieved by developing and applying the adjoint of the GEOS-Chem high performance (GCHP) model. The eventual goal of the work is to leverage this adjoint to infer whether nations are complying with international agreements regarding their emissions, although additional objectives will be considered and developed during the work as mutually discussed. This is a one-year appointment with the possibility of renewal.