Abstract. This description paper presents a detailed and consistent estimate and analysis of exhaust pollutant emissions generated by Chile's road transport activity for the period 1990–2020. The complete database for the period 1990–2020 is available at doi: http://dx.doi.org/10.17632/z69m8xm843.2. Emissions are provided at high-spatial resolution (0.01° × 0.01°) over continental Chile from 18.5 S to 53.2 S, including local pollutants (CO, VOC, NO_x, MP_2.5), black carbon (BC) and greenhouse gases (CO₂, CH₄). The methodology considers 70 vehicle types, based on ten vehicle categories, subdivided into two fuel types and seven emission standards. Vehicle activity was calculated based on official databases of vehicle records and vehicle flow counts. Fuel consumption was calculated based on vehicle activity and contrasted with fuel sales, to calibrate the initial dataset. Emission factors come mainly from COPERT 5, adapted to local conditions in the 15 political regions of Chile, based on emission standards and fuel quality. While vehicle fleet has grown fivefold between 1990 and 2020, CO₂ emissions had followed this trend at a lower rate and emissions of local pollutants have decreased, due to stricter abatement technologies, better fuel quality and enforcement of emission standards. In other words, there has been decoupling between fleet growth and emissions’ rate of change. Results were contrasted with EDGAR datasets, showing similarities in CO₂ estimations and striking differences in PM, BC and CO; in the case of NO_x and CH₄ there is coincidence only until 2008. In all cases of divergent results, EDGAR estimates higher emissions.

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1990-2020 年智利道路运输废气排放的高清空间分布图

摘要。本描述文件对 1990 年至 2020 年期间智利道路运输活动产生的废气污染物排放进行了详细且一致的估计和分析。1990-2020 年期间的完整数据库可在 doi 获得：http://dx.doi.org/10.17632/z69m8xm843.2。以高空间分辨率 (0.01° × 0.01°) 在智利大陆上提供从 18.5 S 到 53.2 S 的排放，包括当地污染物（CO、VOC、NO _x、MP _2.5）、黑碳 (BC) 和温室气体 (CO ₂ , CH ₄）。该方法考虑了 70 种车辆类型，基于十种车辆类别，细分为两种燃料类型和七种排放标准。车辆活动是根据车辆记录和车辆流量计数的官方数据库计算的。燃料消耗是根据车辆活动计算的，并与燃料销售进行对比，以校准初始数据集。排放因子主要来自 COPERT 5，根据排放标准和燃料质量适应智利 15 个政治区域的当地条件。虽然 1990 年至 2020 年间汽车数量增长了五倍，但 CO ₂由于更严格的减排技术、更好的燃料质量和执行排放标准，排放量以较低的速度跟随这一趋势，当地污染物的排放量有所减少。换句话说，车队增长与排放变化率之间存在脱钩。结果与 EDGAR 数据集进行了对比，显示了 CO ₂估计的相似性以及 PM、BC 和 CO 的显着差异；在 NO _x和 CH ₄的情况下，直到 2008 年才巧合。在所有不同结果的情况下，EDGAR 估计排放量更高。