The elevated point and on-road emission sources have been identified to be the dominant anthropogenic categories contributing to ozone formation in Southeast Texas of USA. In this study, additional CAMx simulations were carried out to quantify the reductions of ozone concentration in response to the reductions of the two emission sources in the amount of 25, 50 and 75% from the Southeast region based on the summertime Ozone Episode provided by the Texas Commission on Environmental Quality (TCEQ). The simulation results were analyzed and reported in the form of Empirical Kinetics Modeling Approach (EKMA) diagrams and further confirmed through additional Ozone Source Apportionment Technology (OSAT) simulations available in CAMx. While the results are observed to be highly depending on the monitor station, they have indicated that the control of elevated point emissions is slightly more effective in ozone reduction than that of on-road emissions. Averagely, a sole reduction of 48.3% from the elevated point source, or a sole reduction of 61.0% from the on-road source, or a combined reduction of 30.0% each from the two sources are required to meet a potential future 8-h ozone NAAQS of 65 ppb. The current study has demonstrated that CAMx simulations are powerful for the practice and the developed methodology is beneficial to potential future practice when new ozone episodes become available.

已确定高架点和道路排放源是美国德克萨斯州东南部臭氧形成的主要人为类别。在这项研究中，基于夏季臭氧事件提供的东南地区两个排放源的减少 25%、50% 和 75%，进行了额外的 CAMx 模拟以量化臭氧浓度的减少。德克萨斯州环境质量委员会 (TCEQ)。模拟结果以经验动力学建模方法 (EKMA) 图的形式进行分析和报告，并通过 CAMx 中可用的其他臭氧源分配技术 (OSAT) 模拟进一步确认。虽然观察到的结果在很大程度上取决于监测站，他们表示，控制高点排放在减少臭氧方面比控制道路排放稍微更有效。平均而言，需要从高架点源单独减少 48.3%，或从道路源单独减少 61.0%，或两个源分别减少 30.0%，以满足未来潜在的 8-h臭氧 NAAQS 为 65 ppb。当前的研究表明，CAMx 模拟对于实践来说是强大的，并且当新的臭氧事件可用时，开发的方法有利于未来的潜在实践。需要来自两个来源的各 0% 才能满足 65 ppb 的潜在未来 8 小时臭氧 NAAQS。当前的研究表明，CAMx 模拟对于实践来说是强大的，并且当新的臭氧事件可用时，开发的方法有利于未来的潜在实践。需要来自两个来源的各 0% 才能满足 65 ppb 的潜在未来 8 小时臭氧 NAAQS。当前的研究表明，CAMx 模拟对于实践来说是强大的，并且当新的臭氧事件可用时，开发的方法有利于未来的潜在实践。