A METEOROLOGICAL DATABASE FOR NEXT-GENERATION DISPERSION MODELS, AND A LAGRANGIAN PARTICLE MODEL-BASED ON KINEMATIC SIMULATION THEORY

The database system supports small to regional scale air pollution ana lysis and dispersion modelling. It provides a three-dimensional and ti me-dependent description of relevant meteorological scalar and vector quantities, and also trajectories and meteorological input data for co mmonly used. dispersion models for local and regional applications. Th e data are visualized on a standard PC with software provided. The sys tem contains the following modules: a statistical I/O-analysis, a boun dary layer model, a short-term regional-scale forecast model (in prepa ration), a trajectory processor, a nonhydrostatic meteorological local model and interfaces for a variety of transport and dispersion models . Station data and gridded data are archived. Postprocessors extract a rchived data and process time series, profiles, subregions grid, etc., as required. The new Lagrangian particle model (LPM) uses kinematic s imulation theory. It calculates snapshots of concentrations rather tha n ensemble mean values. It can also directly provide higher moments of concentrations, C-n(t), and is applicable for odour problems as well.