1.3    WRF-Chem V3.4 - A Summary of Status and Updates

Grell, Georg, National Oceanic and Atmospheric Administration/ESRL, S.A. McKeen, S. E. Peckham, R. Ahmadov, NOAA/ESRL, Jan Kazil, NOAA/ESRL/CSD, J. D. Fast PNNL, M. Barth, G. Pfister, S. Wolter, NCAR, J. Wong, University of Colorado, S. Freitas, CPTEC, Brazil, P. Webley, M. Stuefer, University of Alaska, G. A. Creighton, S. L. Jones, AFWA

We will describe recent updates to the Weather Research and Forecasting (WRF) model as it is coupled with chemistry. WRF-Chem V3.4 includes many new additional features such as new aqueous phase chemistry options, new chemistry packages, and another SOA package. New links to meteorological physics parameterizations have also been added to expand capabilities to simulate the aerosol direct and indirect effects. Other new features include the addition of SO2 emissions from volcanoes. In addition to transport and deposition of volcanic ash and/or dust in separate dispersion options, volcanic ash was also coupled to other aerosol modules. An overview of the current status of this modeling system and ongoing as well as future development will be discussed. In addition some evaluation results will be presented.