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FULLY COUPLED "ONLINE" CHEMISTRY WITHIN THE WRF MODEL
Citation:
GRELL, G. A., S. E. PECKHAM, R. SCHMITZ, S. A. MCKEEN, G. FROST, W. C. SKAMAROCK, AND B. K. EDER. FULLY COUPLED "ONLINE" CHEMISTRY WITHIN THE WRF MODEL. ATMOSPHERIC ENVIRONMENT. Elsevier Science Ltd, New York, NY, 39(37):6975-6957, (2005).
Impact/Purpose:
The objectives of this task include: (1) to continuously evaluate and analyze the forecast results to provide diagnostic information on model performance and inadequacies to guide further evolution and refinements to the CMAQ model, and (2) extending the utility of the daily air quality forecast model data being produced by NOAA's National Weather Service (NWS) as part of a NOAA/EPA collaboration in air quality forecasting, to EPA mission-oriented activities. These objectives include developing and maintaining a long-term database of air quality modeling results (ozone and PM2.5), performing periodic analysis and assessments using the data, and making the air quality database available and accessible to States, Regions, RPO's and others to use as input data for regional/local scale air quality modeling for policy/regulatory purposes.
Description:
A fully coupled "online" Weather Research and Forecasting/Chemistry (WRF/Chem) model has been developed. The air quality component of the model is fully consistent with the meteorological component; both components use the same transport scheme (mass and scalar preserving), the same grid (horizontal and vertical components), and the same physics schemes for subgrid-scale transport.