DEVELOPMENT OF A GLOBAL-THROUGH-URBAN SCALE NESTED AIR QUALITY FORECAST MODEL (RSM-ANA): APPLICATION OVER THE MADRID DOMAIN

摘要

This contribution focus on developing a Global-through-Urban scale nested Air Quality Forecast Model and the preliminary steps. The RSM (Regional Spectral Model) is the meteorological model which will be coupled to a chemical solver (Jacobson and Turco (1994). Atmospheric Environment, 28, 273―284). RSM model uses GSM (Global Spectral Model) to drive the meteorological flow into the regional domain. RSM is a limited area atmospheric numerical model system which is used primarily for daily weather forecasts, and climate simulation or forecasts. Since spectral computation has higher accuracy in term of gradients and spectral interpolation the advantages of spectral numerical modelling are clear. To overcome the difficulty with spectral methods for modelling limited areas a time-dependent perturbation method has been used. The RSM model has been linked to the ANA model (Atmospheric mesoscale Numerical pollution model for urban and regional Areas) developed by San Jose et al. (1995, European Symposium on Optics for Environmental and Public Safety, 2506, 286―297). ANA model includes a non-hydrostatic mesoscale meteorological model, REMEST, based in MEMO (Flassak and Moussiopoulos (1989). Simulation of the Sea Breeze in Athens with an Efficient Non-hydrostatic Mesoscale Model, pp. 189―195) and MM5(Grell et al.(1994). A Description of the Fifth-generation Penn State/NC AR Mesoscale Model(MM5), NCAR Technical note). The whole system is named RSM-ANA model. In this contribution we show the differences on the ANA model forecasts when we use vertical meteorological sounding forecasts from the RSM model.