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Final Program


Final Program

ACE 2025

Technical and Student Poster Session

Ozone Evaluation For Ozone Advance In Memphis, Tennessee

Tuesday, June 10, 2025
10:45am – 12:15pm ET
Location: Ballroom BC
Abstract Description: The Memphis Combined Statistical Area consists of eleven counties across the Tennessee, Arkansas, and Mississippi States. This area has experienced high ozone levels in the past few years. Despite being redesignated to maintenance for the 2008 8-hour ozone National Ambient Air Quality Standard (NAAQS) since 2016, recent high ozone episodes could potentially cause nonattainment for the 2015 8-hour ozone NAAQS in this area. Through the collaborative Ozone Advance effort by the Environmental Protection Agency (EPA), states, tribes, and local governments, emission reductions can help reach a goal of maintaining the 2015 NAAQS for ozone in the Memphis area. While local emissions from on-road, nonroad, and power plants substantially impact Memphis’s air quality, long-range transport such as wildfires could also negatively contribute to the air quality. In this study, we will evaluate the 2023 Memphis area ozone contributions of four emission source regions (i.e., Tennessee, Arkansas, Mississippi, and the other states and areas) and multiple emission sectors using the Comprehensive Air quality Model with extensions (CAMx). The Anthropogenic Precursor Culpability Assessment technique will be applied to apportion ozone production to controllable ozone precursors emissions relevant to development of control strategies. We will adopt the 2023 emissions projected from the 2016v3 Emission Modeling Platform managed by EPA. Our modeling results will provide estimates of ozone production from individual regions and emission sources to support agencies in ozone strategy development.

Keywords: ozone, Memphis, Ozone Advance

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