Evaluating The Impact Of Horizontal Resolution On Surface Ozone Over Arizona Using Multi-Scale Infrastructure For Chemistry And Aerosols (Musicav0)
Presenter: Mohammad Amin Mirrezaei P141
Co-Author(s): Yafang Guo1, Wenfu Tang2, Louisa K. Emmons2, Chayan Roychoudhury1and Avelino Arellano1
1. Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, USA
2. Atmospheric Chemistry Observations & Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, USA
Advisor(s): Dr. Avelino Arellano
1Hydrology & Atmospheric Sciences
Ozone pollution in Arizona's arid and semi-arid regions poses challenges due to its spatial and temporal variability, as well as its significant impact on public health and ecosystems. Although ground-based measurements and satellite-based observations are becoming more accessible, their spatial and temporal coverage remains restricted. Utilizing multiscale air quality models can help connect discrepancies in satellite and surface data. Here, we use the Community Earth System Model/Community Atmosphere Model with full chemistry (CESM/CAM-chem) using the Spectral Element (SE) with Regional Refinement (RR) dynamical core, which is called the Multi-Scale Infrastructure for Chemistry and Aerosols Version 0 (MUSICA-v0), a global chemistry climate model with regional refinement across the CONUS, and the Weather Research and Forecasting (WRF) model coupled with Chemistry or WRF-Chem with varying resolutions. We examined NO2 and formaldehyde (HCHO) as indicators of VOC and NOx reactivity, together with ozone levels, during the summer in Arizona. The MUSICA-v0 simulations with approximately 14 km horizontal resolution were compared to the WRF-Chem simulations with 9 and 3 km horizontal resolutions for July 2020. The primary objectives are to evaluate MUSICA-v0 and WRF-Chem simulations with USEPA Air Quality System datasets and investigate the impact of horizontal resolution on surface ozone and its precursors, particularly in terms of its ability to accurately reflect NOx and VOC-limited conditions.