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首页> 外文会议>Fourth International Conference on Air Pollution Monitoring, Simulation and Control, Aug 28-30, 1996, Toulouse, France >A 3D regional scale photochemical air quality model - application to a 3 day summertime episode over Paris
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A 3D regional scale photochemical air quality model - application to a 3 day summertime episode over Paris

机译：3D区域规模的光化学空气质量模型-应用于巴黎上空3天的夏季情节

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This paper presents A_3UR, a 3D Eulerian photochemical air quality model for the simulation of air pollution in urban and semi-urban areas. The model tracks gas pollutant species emitted into the atmosphere by transportation and industrial sources, it computes the chemical reactions of these species under varying meteorological conditions (photolysis, pressure, temperature, humidity), their transport by wind and their turbulent diffusion as a function of air stability. It has a modular software structure which includes several components dedicated to specific processes: 1. MERCURE, a meso-scale meteorological model to compute the wind field, turbulent diffusion coefficients, and other meteorological parameters. It is a 3D regional scale model accounting for different ground types and urban densities. It includes a complete set of physical parameterizations in clear sky. 2. An emission inventory model describing the pollutant fluxes from automotive transportation, domestic and industrial activities. This model includes a mobile source inventory based on road vehicle countings together with global information on transportation fluxes extracted from statistical population data. It uses specific emission factors representative of the vehicle fleet and real driving patterns. 3. MoCA a photochemical gas phase model describing the chemistry of ozone, NOx, and hydrocarbon compounds. This model, with 83 species and 191 reactions, is a reduced mechanism well adapted to various air quality conditions (ranging from urban to rural conditions). For interpretative reasons, the identity of primary hydrocarbons is preserved. 4. AIRQUAL, a 3D Eulerian model describing the transport by mean wind flux and air turbulent diffusion of species in the atmosphere, associated with a Gear type chemical equation solver. The model has been applied to a 3-day summertime episode over Paris area. Simulation results are compared to ground level concentration measurements performed by the local monitoring network.
机译：本文介绍了A_3UR，这是一种3D欧拉光化学空气质量模型，用于模拟城市和半城市地区的空气污染。该模型跟踪通过运输和工业来源排放到大气中的气体污染物种类，它计算这些种类在变化的气象条件（光解，压力，温度，湿度）下的化学反应，它们在风中的运输以及它们的湍流扩散随温度变化的函数。空气稳定性。它具有模块化的软件结构，其中包括几个专门用于特定过程的组件：1. MERCURE，一种中尺度气象模型，用于计算风场，湍流扩散系数和其他气象参数。这是一个3D区域比例模型，说明了不同的地面类型和城市密度。它包括在晴朗的天空中的一整套物理参数设置。 2.排放清单模型，描述了来自汽车运输，家庭和工业活动的污染物通量。该模型包括基于道路车辆计数的移动源清单以及从统计人口数据中提取的有关通量的全球信息。它使用代表车辆车队和实际驾驶模式的特定排放因子。 3. MoCA一种光化学气相模型，描述了臭氧，NOx和碳氢化合物的化学性质。该模型具有83个物种和191个反应，是一种简化的机制，非常适合各种空气质量状况（从城市到乡村的变化）。出于解释的原因，保留了主要烃的身份。 4. AIRQUAL，一个3D欧拉模型，描述了通过平均风通量和空气湍流扩散到大气中的物种的运输，与Gear型化学方程式求解器相关联。该模型已应用于巴黎地区3天的夏季情节。将模拟结果与本地监控网络执行的地面浓度测量值进行比较。

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