@article{1f3ae13714174cc5b0244482df87301a,
title = "Policy-relevant assessment of urban CO2emissions",
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.",
author = "Thomas Lauvaux and Gurney, {Kevin R.} and Miles, {Natasha L.} and Davis, {Kenneth J.} and Richardson, {Scott J.} and Aijun Deng and Nathan, {Brian J.} and Tomohiro Oda and Wang, {Jonathan A.} and Lucy Hutyra and Jocelyn Turnbull",
note = "Funding Information: The authors thank Maria O. Cambaliza, Anna Karion, Douglas K. Martins, Colm Sweeney, Isaac Vimont for instrumenting, maintaining, and analyzing atmospheric data during the INFLUX project; Bernd J. Haupt for data acquisition and quality control; Brian Gaudet for his expertise in WRF modeling; Jianhua Huang, Darragh O{\textquoteright}Keefe, and Yang Song for their contribution to the Hestia product; Paul Shepson and James Whetstone for helpful discussion. The atmospheric measurements of CO and CO greenhouse gas mixing ratios (https://doi.org/10.18113/d37g6p) and the inverse model footprints (https://doi.org/10.26208/a95d-cm52) are publicly available at the PennState Data Commons. This work has been funded by the National Institute for Standards and Technology (Project 70NANB10H245) and the National Oceanic and Atmospheric Administration (Grant NA13OAR4310076). T.L. was also supported by the French research program Make Our Planet Great Again (Project CIUDAD). 2 a Publisher Copyright: Copyright {\textcopyright} 2020 American Chemical Society.",
year = "2020",
month = aug,
day = "18",
doi = "10.1021/acs.est.0c00343",
language = "English (US)",
volume = "54",
pages = "10237--10245",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "16",
}