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Policy-Relevant Assessment of Urban CO 2 Emissions

Abstract : Global fossil fuel carbon dioxide (FFCO 2) emissions will be dictated to a great degree by the trajectory of emissions from urban areas. Conventional methods to quantify urban FFCO 2 emissions typically rely on self-reported economic/energy activity data transformed into emissions via standard emission factors. However, uncertainties in these traditional methods pose a roadblock to implementation of effective mitigation strategies, independently monitor long-term trends, and assess policy outcomes. Here, we demonstrate the applicability of the integration of a dense network of greenhouse gas sensors with a science-driven building and street-scale FFCO 2 emissions estimation through the atmospheric CO 2 inversion process. Whole-city FFCO 2 emissions agree within 3% annually. Current self-reported inventory emissions for the city of Indianapolis are 35% lower than our optimal estimate, with significant differences across activity sectors. Differences remain, however, regarding the spatial distribution of sectoral FFCO 2 emissions, underconstrained despite the inclusion of coemitted species information.
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Submitted on : Wednesday, November 4, 2020 - 9:12:14 AM
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Lauvaux et al Environmental Sc...
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Thomas Lauvaux, Kevin Gurney, Natasha Miles, Kenneth Davis, Scott Richardson, et al.. Policy-Relevant Assessment of Urban CO 2 Emissions. Environmental Science and Technology, American Chemical Society, 2020, 54 (16), pp.10237-10245. ⟨10.1021/acs.est.0c00343⟩. ⟨hal-02924397⟩



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