The Smk2emis program converts SMOKE I/O API gridded, mole-speciated, hourly emissions into the Fortran-binary format used for 2-D emissions by UAM, CAM_X, and REMSAD. Files of this format use the UAM keyword “EMISSIONS”. The SMOKE user is responsible for preparing the I/O API inputs with the appropriate chemical species, grid structures, time steps, and units for use in whatever model will be using the results of Smk2emis.