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首页> 外文期刊>Journal of the air & waste management association >Development of a Microscale Emission Factor Model for Particulate Matter for Predicting Real-Time Motor Vehicle Emissions
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Development of a Microscale Emission Factor Model for Particulate Matter for Predicting Real-Time Motor Vehicle Emissions

机译：微粒物质微观尺度排放因子模型的开发，用于预测机动车的实时排放

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The U.S. Environmental Protection Agency's National Exposure Research Laboratory is pursuing a project to improve the methodology for modeling human exposure to motor vehicle emissions. The overall project goal is to develop improved methods for modeling the source through the air pathway to human exposure in significant exposure micro-environments. Current particulate matter (PM) emission models, particle emission factor model (used in the United States, except California) and motor vehicle emission factor model (used in California only), are suitable only for county-scale modeling and emission inventories. There is a need to develop a site-specific real-time emission factor model for PM emissions to support human exposure studies near roadways. A microscale emission factor model for predicting site-specific real-time motor vehicle PM (MicroFacPM) emissions for total suspended PM, PM less than 10 μm aerodynamic diameter, and PM less than 2.5 μm aerodynamic diameter has been developed. The algorithm used to calculate emission factors in MicroFacPM is disaggregated, and emission factors are calculated from a real-time fleet, rather than from a fleet-wide average estimated by a vehicle-miles-traveled weighting of the emission factors for different vehicle classes. MicroFacPM requires input information necessary to characterize the site-specific real-time fleet being modeled. Other variables required include average vehicle speed, time and day of the year, ambient temperature, and relative humidity.
机译：美国环境保护局的国家暴露研究实验室正在寻求一个项目，以改进对人体暴露于机动车排放中进行建模的方法。该项目的总体目标是开发一种改进的方法，以在重要的暴露微环境中通过空气途径建立人体暴露源的模型。当前的颗粒物（PM）排放模型，颗粒排放因子模型（在美国，加利福尼亚除外）和机动车排放因子模型（仅在加利福尼亚使用）仅适用于县级模型和排放清单。需要开发针对PM排放的特定于站点的实时排放因子模型，以支持道路附近的人体暴露研究。已经开发了一种微尺度排放因子模型，用于预测特定地点的实时机动车PM（MicroFacPM）排放总量，用于总悬浮PM，小于10μm空气动力学直径的PM和小于2.5μm空气动力学直径的PM。对用于计算MicroFacPM中排放因子的算法进行了分解，排放因子是根据实时车队计算的，而不是根据不同车辆类别的排放因子对车辆行驶里程的加权估算出的​​整个车队的平均值。 MicroFacPM需要输入信息，以表征要建模的特定于站点的实时车队。所需的其他变量包括平均车速，一年中的时间和日期，环境温度和相对湿度。

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