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Evaluation of the two-way coupled WRF-CMAQ modeling system to the 2011 DISCOVER-AQ campaign at 12-km, 4-km and 1-km resolutions
Citation:
Appel, W., Jon Pleim, R. Gilliam, G. Pouliot, David-C Wong, R. Mathur, AND C. Hogrefe. Evaluation of the two-way coupled WRF-CMAQ modeling system to the 2011 DISCOVER-AQ campaign at 12-km, 4-km and 1-km resolutions. 2014 CMAS Conference, Chapel Hill, NC, October 27 - 29, 2014.
Impact/Purpose:
The National Exposure Research Laboratory (NERL) Atmospheric Modeling and Analysis Division (AMAD) conducts research in support of EPA mission to protect human health and the environment. AMAD research program is engaged in developing and evaluating predictive atmospheric models on all spatial and temporal scales for forecasting the air quality and for assessing changes in air quality and air pollutant exposures, as affected by changes in ecosystem management and regulatory decisions. AMAD is responsible for providing a sound scientific and technical basis for regulatory policies based on air quality models to improve ambient air quality. The models developed by AMAD are being used by EPA, NOAA, and the air pollution community in understanding and forecasting not only the magnitude of the air pollution problem, but also in developing emission control policies and regulations for air quality improvements.
Description:
At the 12th Annual CMAS Conference initial results from the application of the coupled WRF-CMAQ modeling system to the 2011 Baltimore-Washington D.C. DISCOVER-AQ campaign were presented, with the focus on updates and new methods applied to the WRF modeling for fine-scale applications. Since then, further updates have been made to the fine-scale WRF application for this project, and a number of coupled WRF-CMAQ simulations have been performed at 12-km, 4-km and 1-km horizontal grid spacing over the Baltimore-Washington D.C. region for July 2011. Presented will be a detailed evaluation of the WRF-CMAQ model performance of the various WRF-CMAQ simulations, with an emphasis on comparisons to the unique air quality measurements (e.g. ship and aircraft) that are available during the DISCOVER-AQ campaign. Specific measurements used will include ozone measurements made by ship over the Chesapeake Bay, NASA P-3B and NASA UC12 aircraft measurements made at various altitudes and include vertical spirals above several locations, tethersonde measurements, and unique ground-based measurements not routinely available outside the campaign.
