Data on airborne fine particle (PM_2.5) emissions and concentrations in cities are valuable for traffic and air quality managers, urban planners, health practitioners, researchers, and ultimately for legislators and decision makers. Emissions and ambient concentrations of PM_2.5 and black carbon (BC) were assessed in the city of Curitiba, southern Brazil. The methodology combined a month-long monitoring campaign with both fixed and mobile instruments, development of emission inventories, and dispersion model simulations on different scales. The mean urban background PM_2.5 concentrations during the campaign were 7.3 μg m⁻³ in Curitiba city center, but three- to fourfold higher (25.3 μg m^-3) in a residential area on the city’s outskirts, indicating the presence of local sources, possibly linked to biomass combustion. BC concentrations seemed to be more uniformly distributed over the city, with mean urban background concentrations around 2 μg m⁻³, half of which due to local traffic emissions. Higher mean BC concentrations (3–5 μg m^-3) were found along busy roads. The dispersion modeling also showed high PM_2.5 and BC concentrations along the heavily transited ring road. However, the lack of in situ data over these peripheral areas prevented the verification of the model output. The vehicular emission factors for PM_2.5 and BC from the literature were found not to be suitable for Curitiba’s fleet and needed to be adjusted. The integrated approach of this study can be implemented in other cities, as long as an open data policy and a close cooperation among regional, municipal authorities and academia can be achieved.

有关城市中空气中微粒（PM _2.5）排放和浓度的数据，对于交通和空气质量管理人员，城市规划人员，卫生从业人员，研究人员以及最终对立法者和决策者而言都是有价值的。在巴西南部的库里蒂巴市评估了PM _2.5和黑碳（BC）的排放和环境浓度。该方法结合了为期一个月的监测活动，包括固定和移动工具，排放清单的开发以及不同规模的扩散模型模拟。在竞选期间，库里提巴市中心的平均城市本底PM _2.5浓度为7.3μgm ^-3，但高了三到四倍（25.3μgm ^-3）位于城市郊区的居民区中，表明存在本地资源，可能与生物质燃烧有关。BC浓度似乎在整个城市中分布更均匀，平均城市背景浓度约为2μgm ^-3，其中一半是由于当地的交通排放所致。在繁忙的道路上发现较高的平均BC浓度（3–5μgm ^-3）。弥散模型还显示，在交通繁忙的环城公路沿线，PM _2.5和BC浓度较高。但是，由于缺少这些外围区域的原位数据，因此无法验证模型输出。PM _2.5的车辆排放因子从文献中发现BC和BC不适合库里蒂巴的舰队，需要进行调整。只要可以实现开放的数据政策以及地区，市政当局和学术界之间的紧密合作，本研究的综合方法就可以在其他城市实施。