An efficient approach to construct ozone isopleths was established. It utilizes both first- and secondorder sensitivity analysis from a regional air quality model to build a reduced form model (RFM) for calculating ozone concentrations that respond to the different levels of nitrogen oxides (NOx) and volatile organic compounds (VOCs) emissions. The approach was applied to the Chengdu Plain area by simulating the ozone concentration and its sensitivities to anthropogenic emissions for August 2018 with adjusted emissions inventory. Ozone isopleth diagrams were plotted for cities in the area. Under the guidance of ozone isopleths, effective ozone control strategies were further suggested for Chengdu city as an example.

提出一种快速构建臭氧生成等浓度曲线的新方法。该方法利用区域空气质量模式进行臭氧前体物的敏感性分析, 基于一阶和二阶敏感性系数构建简化模型, 快速计算前体物不同排放水平对应的臭氧生成浓度。使用该方法, 结合调整的源排放清单, 对2018年8月成都平原地区进行臭氧回溯模拟并绘制臭氧生成等浓度曲线图。在此基础上, 以成都市为例, 对城市臭氧污染控制提出对策建议。