Direct estimates of emissions from the megacity of Lagos

Direct estimates of emissions from the megacity of Lagos
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DOI:
10.5194/acp-9-8471-2009
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发表时间:
2009-01-01
影响因子:
6.3
通讯作者:
Purvis, R. M.
Purvis, R. M.
中科院分区:
地球科学1区
文献类型:
--
作者:
Hopkins, J. R.;Evans, M. J.;Purvis, R. M.

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我们在这里报告了一个非洲特大城市自上而下的排放估计。作为AMMA项目的一部分,使用FAAM BAe 146飞机完成了尼日利亚的拉各斯边界层环绕飞行。这些观测结果与推断出的边界层高度一起,可以计算出污染物的通量。外推得出CO、NOx和VOCs的年排放量分别为1.44 Tg yr(-1)、0.03 Tg yr(-1)和0.37 Tg yr(-1),不确定度为(+250)/(-60%)。这些推断的排放量与其他发展中特大城市自下而上的估计数一致,归因于燃料蒸发、移动的燃烧和天然气排放。
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.