Policy-Relevant Assessment of Urban CO2Emissions

Thomas Lauvaux, Kevin R. Gurney, Natasha L. Miles, Kenneth J. Davis, Scott J. Richardson, Aijun Deng, Brian J. Nathan, Tomohiro Oda, Jonathan A. Wang, Lucy Hutyra, Jocelyn Turnbull

Research output: Contribution to journalArticle

Abstract

Global fossil fuel carbon dioxide (FFCO2) emissions will be dictated to a great degree by the trajectory of emissions from urban areas. Conventional methods to quantify urban FFCO2 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 FFCO2 emissions estimation through the atmospheric CO2 inversion process. Whole-city FFCO2 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 FFCO2 emissions, underconstrained despite the inclusion of coemitted species information.

Original languageEnglish (US)
JournalEnvironmental Science and Technology
DOIs
StateAccepted/In press - 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry

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    Lauvaux, T., Gurney, K. R., Miles, N. L., Davis, K. J., Richardson, S. J., Deng, A., Nathan, B. J., Oda, T., Wang, J. A., Hutyra, L., & Turnbull, J. (Accepted/In press). Policy-Relevant Assessment of Urban CO2Emissions. Environmental Science and Technology. https://doi.org/10.1021/acs.est.0c00343