Articles | Volume 19, issue 3
Atmos. Chem. Phys., 19, 1801–1818, 2019
https://doi.org/10.5194/acp-19-1801-2019
Atmos. Chem. Phys., 19, 1801–1818, 2019
https://doi.org/10.5194/acp-19-1801-2019
Research article
08 Feb 2019
Research article | 08 Feb 2019

A top-down assessment using OMI NO2 suggests an underestimate in the NOx emissions inventory in Seoul, South Korea, during KORUS-AQ

Daniel L. Goldberg et al.

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Short summary
Using satellite data, we are able to estimate the emissions of NOx (NOx=NO+NO2), a toxic group of air pollutants, in the Seoul metropolitan area. We first develop an enhanced satellite product that better observes NO2 in urban regions. Using this new product, we derive NOx emissions to be twice as large as the emissions reported by the South Korean government. The implication is that the measures taken to reduce NOx emissions in South Korea have not been as effective as regulators have thought.
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