Black carbon (BC), carbon monoxide (CO), and carbon dioxide (CO₂) were measured in Mexico City (UNAM observatory) with a Photoacoustic Extinctiometer-PAX (BC) and a Cavity Ring-Down Spectroscopy analyzer-CRDS (CO and CO₂), from November 2014 to July 2016. The objective of this study was to determine temporal variations of BC, CO, and CO₂, their mutual correlations, and evaluation of the Mexico City emission inventory. The highest concentrations of pollutants were detected in cold dry season. The average concentrations of BC, CO, and CO₂, for the entire period, were 2.95 μg m⁻³, 0.64 ppm, and 421.81 ppm, respectively. We calculated ΔBC/ΔCO, ΔBC/ΔCO₂, and ΔCO/ΔCO₂ using three methods to obtain a confidence interval for the emission ratios. BC, CO, CO₂ concentrations, and the ΔBC/ΔCO ratio were maximum in the early morning, while the ΔBC/ΔCO₂ and ΔCO/ΔCO₂ peak was maximum in the afternoon. BC and CO have a weekday/weekend difference. The estimated slopes (ΔBC/ΔCO, ΔBC/ΔCO₂, and ΔCO/ΔCO₂) were compared with the emission ratios (BC/CO, BC/CO₂, and CO/CO₂) derived of the 2016 Mexico City emissions inventory. For mobile sources, the emission ratios of BC/CO and BC/CO₂ were within the measurement range of ΔBC/ΔCO and ΔBC/ΔCO₂, while CO/CO₂ was underestimated in the emission inventory.

黑碳（BC），一氧化碳（CO）和二氧化碳（CO ₂）在墨西哥城（墨西哥国立自治大学天文台）与光声Extinctiometer-PAX（BC）和一个光腔衰荡光谱仪-CRDS（CO，并测量CO ₂），从2014年11月至2016年7月。本研究的目的是确定BC，CO和CO _2的时间变化，它们之间的相互关系以及对墨西哥城排放清单的评估。在寒冷的干燥季节，污染物的浓度最高。BC，CO，和CO的平均浓度₂，在整个期间，为2.95微克米^-3分别，0.64 ppm，且421.81 ppm时，。我们计算ΔBC/ΔCO，ΔBC/ΔCO ₂，和ΔCO/ΔCO ₂使用三种方法来获得排放比的置信区间。BC，CO，CO ₂浓度，并且ΔBC/ΔCO比值均在清晨最大，而ΔBC/ΔCO ₂和ΔCO/ΔCO ₂峰最大值在下午。BC和CO的工作日/周末有所不同。所估计的斜率（ΔBC/ΔCO，ΔBC/ΔCO ₂，和ΔCO/ΔCO ₂）与发光率（BC / CO，BC / CO进行比较₂，和CO / CO ₂导出的2016墨西哥城排放清单）。对于移动源，BC / CO和BC / CO的发光率₂分别ΔBC/ΔCO和ΔBC/ΔCO的测量范围内₂，而CO / CO ₂ 在排放清单中被低估了。