Validation of the Atmospheric Dispersion Model NAME against Long-Range Tracer Release Experiments

Abstract The Met Office’s atmospheric dispersion model Numerical Atmospheric-Dispersion Modeling Environment (NAME) is validated against controlled tracer release experiments, considering the impact of driving meteorological data and choices in parameterization unresolved motions. Cross-Appalachian Tracer Experiment (CAPTEX) Across North America (ANATEX) were long-range experiments which inert tracers released air concentrations measured across 1980s. NAME simulations have been driven by both reanalysis from European Centre for Medium-Range Weather Forecasts (ECMWF) Advanced Research version Forecasting (WRF) Model. predictions are assessed experimental measurements, using a ranking method composed four statistical parameters. Differences performance according to this compared when different sources. effect changing parameter values mesoscale motions also considered, particular, whether giving best rank consistent with typically used. ranks analyses literature other particle models, namely, Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT), Stochastic Time-Inverted Transport (STILT), Flexible Particle (FLEXPART). It found that comparable models responding similarly differences data.