Trends in health and agriculture-relevant ozone metrics over the United States from WRF-CMAQ reanalysis simulations

Ozone concentrations have resulted in significant impacts on both human health and crop production throughout the beginning of the 21st century. Results presented here are from a NASA funded WRF-CMAQ model run at a 12km x 12km gridded horizontal resolution using data assimilation of MODIS AOD and MOPITT CO for a fourteen-year (2005-2018) period to show shifts in atmospheric composition over the continental United States (CONUS). This publicly available data has been aggregated to the maximum daily 8-hour ozone (MDA8) and seasonal ozone (OSDMA8) metrics for each of the EPA regions to show the regional drivers to human health as well as calculation of the accumulated ozone exposure (AOT40 and W126) metrics varying temporally and geographically based on crop data for CONUS available from the United States Department of Agriculture. These aggregation techniques have allowed us to identify both trends and some of the meteorological and atmospheric composition drivers in ozone-related risk for specific outcomes and how they vary geographically. The work presented here will also outline the GIS-based information dissemination platform that can be used by researchers and stakeholders to both access data and assess more detailed collaborative and convergent research questions.