References

ACP

Atmospheric Chemistry and Physics

ACP

1680-7324

Copernicus GmbH

Göttingen, Germany

10.5194/acp-9-8471-2009

Direct estimates of emissions from the megacity of Lagos

Hopkins

J. R.

¹ Evans

M. J.

² Lee

J. D.

¹ Lewis

A. C.

¹ H Marsham

² McQuaid

J. B.

² Parker

D. J.

² Stewart

D. J.

³ Reeves

C. E.

³ Purvis

R. M.

¹ ⁴

National Centre for Atmospheric Science, University of York, YO10 5DD, UK

School of Earth and Environment, University of Leeds, LS2 9JT, UK

School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK

Facility for Airborne Atmospheric Measurement, Cranfield, MK43 0AL, UK

06 11 2009

9 21 8471 8477

This is an open-access article ditributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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The full text article is available as a PDF file from http://www.atmos-chem-phys.net/9/8471/2009/acp-9-8471-2009.pdf

We report here top-down emissions estimates for an African megacity. A boundary layer circumnavigation of Lagos, Nigeria was completed using the FAAM BAe146 aircraft as part of the AMMA project. These observations together with an inferred boundary layer height allow the flux of pollutants to be calculated. Extrapolation gives annual emissions for CO, NOx, and VOCs of 1.44 Tg yr−1, 0.03 Tg yr−1 and 0.37 Tg yr−1 respectively with uncertainties of +250/−60%. These inferred emissions are consistent with bottom-up estimates for other developing megacities and are attributed to the evaporation of fuels, mobile combustion and natural gas emissions.

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