Abstract: Traditional categorical metrics used in model evaluations are ?clear cut? measures in that the model?s ability to predict an ?exceedance? is defined by a fixed threshold concentration and the metrics are defined by ...

Abstract: This paper utilizes a two-stage (average linkage then convergent k means) clustering approach as part of an automated meteorological classification scheme designed to better elucidate the dependence of ozone on meteorology. ...

Abstract: The development of an episode selection and aggregation approach, designed to support distributional estimation for use with the Models-3 Community Multiscale Air Quality (CMAQ) model, is described. The approach utilized ...

Abstract: The National Air Quality Forecast Capability (NAQFC) currently provides next-day forecasts of ozone concentrations over the contiguous United States. It was developed collaboratively by NOAA and Environmental Protection ...