Direct estimates of emissions from the megacity of Lagos

J. R. Hopkins; M. J. Evans; J. D. Lee; A. C. Lewis; J. Marsham; J. B. McQuaid; D. J. Parker; D. J. Stewart; C. E. Reeves; R. M. Purvis

doi:10.5194/acp-9-8471-2009

Direct estimates of emissions from the megacity of Lagos

J. R. Hopkins, M. J. Evans, J. D. Lee, A. C. Lewis, J. Marsham, J. B. McQuaid, D. J. Parker, D. J. Stewart, C. E. Reeves, R. M. Purvis

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Abstract

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.

Original language	English
Pages (from-to)	8471-8477
Number of pages	7
Journal	Atmospheric Chemistry and Physics
Volume	9
Issue number	21
DOIs	https://doi.org/10.5194/acp-9-8471-2009
Publication status	Published - 6 Nov 2009

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10.5194/acp-9-8471-2009Licence: CC BY

Cite this

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title = "Direct estimates of emissions from the megacity of Lagos",

abstract = "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.",

author = "Hopkins, {J. R.} and Evans, {M. J.} and Lee, {J. D.} and Lewis, {A. C.} and J. Marsham and McQuaid, {J. B.} and Parker, {D. J.} and Stewart, {D. J.} and Reeves, {C. E.} and Purvis, {R. M.}",

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T1 - Direct estimates of emissions from the megacity of Lagos

AU - Hopkins, J. R.

AU - Evans, M. J.

AU - Lee, J. D.

AU - Lewis, A. C.

AU - Marsham, J.

AU - McQuaid, J. B.

AU - Parker, D. J.

AU - Stewart, D. J.

AU - Reeves, C. E.

AU - Purvis, R. M.

PY - 2009/11/6

Y1 - 2009/11/6

N2 - 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.

AB - 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.

U2 - 10.5194/acp-9-8471-2009

DO - 10.5194/acp-9-8471-2009

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