Articles | Volume 20, issue 12
Atmos. Chem. Phys., 20, 7193–7216, 2020
https://doi.org/10.5194/acp-20-7193-2020
Atmos. Chem. Phys., 20, 7193–7216, 2020
https://doi.org/10.5194/acp-20-7193-2020
Research article
23 Jun 2020
Research article | 23 Jun 2020

Megacity and local contributions to regional air pollution: an aircraft case study over London

Kirsti Ashworth et al.

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Cited articles

Bretón, J. G. C., Bretón, R. M. C., Ucan, F. V., Baeza, C. B., Fuentes, M. L. E., Lara, E. R., Marrón, M. R., Pacheco, J. A. M., Guzmán, A. R., and Chi, M. P. U.: Characterization and Sources of Aromatic Hydrocarbons (BTEX) in the Atmosphere of Two Urban Sites Located in Yucatan Peninsula in Mexico, Atmosphere, 8, 107, https://doi.org/10.3390/atmos8060107, 2017. 
Brioude, J., Arnold, D., Stohl, A., Cassiani, M., Morton, D., Seibert, P., Angevine, W., Evan, S., Dingwell, A., Fast, J. D., Easter, R. C., Pisso, I., Burkhart, J., and Wotawa, G.: The Lagrangian particle dispersion model FLEXPART-WRF version 3.1, Geosci. Model Dev., 6, 1889–1904, https://doi.org/10.5194/gmd-6-1889-2013, 2013a. 
Brioude, J., Angevine, W. M., Ahmadov, R., Kim, S.-W., Evan, S., McKeen, S. A., Hsie, E.-Y., Frost, G. J., Neuman, J. A., Pollack, I. B., Peischl, J., Ryerson, T. B., Holloway, J., Brown, S. S., Nowak, J. B., Roberts, J. M., Wofsy, S. C., Santoni, G. W., Oda, T., and Trainer, M.: Top-down estimate of surface flux in the Los Angeles Basin using a mesoscale inverse modeling technique: assessing anthropogenic emissions of CO, NOx and CO2 and their impacts, Atmos. Chem. Phys., 13, 3661–3677, https://doi.org/10.5194/acp-13-3661-2013, 2013b. 
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In July 2017 we flew three research flights around London during European Facility for Airborne Research (EUFAR) training. We made continuous measurements of concentrations of key pollutants (ozone, NOx, aerosol particles, CO, CO2 and methane) and meteorology, and we collected periodic samples of air to analyse for volatile organic compounds. We saw evidence that plumes of pollution from the city, strong local emissions and pollution from distant sources all contribute to regional pollution.
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