Household consumption drives more than 65% of global greenhouse gas emissions. Nevertheless, most governments plan to meet the Paris Agreement based on production-based accounting (PBA), neglecting lifecycle emissions embodied in trade and consumption, as well as socio-spatial inequalities. This is a sub-city consumption-based accounting (CBA) analysis of Guadalajara Metropolitan Area (MAG), grounded on Environmentally Extended Multi-Regional Input-Output using EXIOBASE 3.8.1, combined with Mexico's 2018 Consumer Expenditure Survey. The main objective is to explain the CO₂e footprint of MAG's households, identifying emission hotspots and socio-spatial inequalities. This household CBA estimate shows MAG emitted a total of 23.35 MtCO₂e during 2018, at least 26.6% higher than the local Climate Action Plan (CPA) territorial PBA estimate, and 121% higher for food. The average per capita footprint is 4.52 tCO₂e, 40% higher than the average Mexican and 61% higher than the recommended level of 2.8 tCO₂e/cap-yr to align with 1.5 °C pathways by 2030. However, 26% of the MAG population, mostly low-income households, is below this level. Conversely, highest incomes and per capita CO₂e footprints are concentrated in Zapopan and Guadalajara, with 64% of total emissions despite hosting 55% population together. Further, income decile X reach 35% of the total emissions with 13% of the population. If left unchecked, MAG's footprints might increase with the trends of urbanization, inequality, higher consumption, and smaller households, as we find larger households associate with lower footprints. We confirm the need to complement CAP with CBA approach and increase socio-spatial resolution to unlock demand-side solutions that leverage on the interplay between urban, socioeconomic, and technical factors.

家庭消费占全球温室气体排放量的 65% 以上。尽管如此，大多数政府计划在基于生产的会计 (PBA) 的基础上满足《巴黎协定》，而忽略了贸易和消费中体现的生命周期排放以及社会空间不平等。这是瓜达拉哈拉都会区 (MAG) 的基于次城市消费的会计 (CBA) 分析，基于使用 EXIOBASE 3.8.1 的环境扩展多区域投入产出，并结合墨西哥 2018 年消费者支出调查。主要目标是解释 MAG 家庭的 CO ₂ e 足迹，确定排放热点和社会空间不平等。该家庭 CBA 估计显示 MAG 总共排放了 23.35 MtCO ₂e 2018 年期间，至少比当地气候行动计划 (CPA) 地区 PBA 估计高 26.6%，食品高 121%。人均足迹为 4.52 tCO ₂ e，比墨西哥平均水平高 40%，比到 2030 年与 1.5 °C 路径一致的建议水平 2.8 tCO ₂ e/人高 61%。然而，26% MAG 人口，主要是低收入家庭，低于这个水平。相反，最高收入和人均 CO ₂足迹集中在萨波潘和瓜达拉哈拉，尽管拥有 55% 的人口，但总排放量占总排放量的 64%。此外，收入十分位数 X 在 13% 的人口中达到总排放量的 35%。如果不加以控制，MAG 的足迹可能会随着城市化、不平等、更高消费和较小家庭的趋势而增加，因为我们发现较大的家庭与较低的足迹相关。我们确认需要用 CBA 方法补充 CAP，并提高社会空间分辨率，以解锁利用城市、社会经济和技术因素之间相互作用的需求方解决方案。