Fiscal year 1999 summary report of the NOAA Atmospheric Sciences Modeling Division to the U.S. Environmental Protection Agency

During Fiscal Year 1999,the Atmospheric Sciences Modeling Division provided meteorological and modeling assistance to the U.S. Environmental Protection Agency. This ranged from the conduct of research studies and model applications to the provision of advice and guidance. Research efforts emphasized the development and evaluation of air quality models using numerical and physical techniques supported by field studies. Among the significant research studies and results were the distribution of an updated version of Models-3/CMAQ, initiation of the Models-3/CMAQ Help Desk, continued evaluation, modification and application of RELMAP and Models-3/CMAQ for mercury and atrazine, continued improvement of emissions models, continued initial work on the Multimedia Integrated Modeling System (MIMS), continued study of dispersion in the convective boundary layer and in urban areas in the Fluid Modeling Facility, and continued developmentof a statistical method for evaluating model performance.