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<article language="en">
	<journal>
		<journal_title>Atmospheric Chemistry and Physics Discussions</journal_title>
		<journal_url>www.atmos-chem-phys-discuss.net</journal_url>
		<issn>1680-7367</issn>
		<eissn>1680-7375</eissn>
		<volume_number>9</volume_number>
		<issue_number>2</issue_number>
		<publication_year>2009</publication_year>
	</journal>
	<doi>10.5194/acpd-9-8667-2009</doi>
	<article_url>http://www.atmos-chem-phys-discuss.net/9/8667/2009/</article_url>
	<abstract_html>http://www.atmos-chem-phys-discuss.net/9/8667/2009/acpd-9-8667-2009.html</abstract_html>
	<fulltext_pdf>http://www.atmos-chem-phys-discuss.net/9/8667/2009/acpd-9-8667-2009.pdf</fulltext_pdf>
	<start_page>8667</start_page>
	<end_page>8682</end_page>
	<publication_date>2009-04-01</publication_date>
	<article_title content_type="html">Direct estimates of emissions from the megacity of Lagos</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>J. R. Hopkins</name>
		</author>
		<author numeration="2" affiliations="2">
			<name>M. J. Evans</name>
			<email>mat@env.leeds.ac.uk</email>
		</author>
		<author numeration="3" affiliations="1">
			<name>J. D. Lee</name>
		</author>
		<author numeration="4" affiliations="1">
			<name>A. C. Lewis</name>
		</author>
		<author numeration="5" affiliations="2">
			<name>J. H. Marsham</name>
		</author>
		<author numeration="6" affiliations="2">
			<name>J. B. McQuaid</name>
		</author>
		<author numeration="7" affiliations="2">
			<name>D. J. Parker</name>
		</author>
		<author numeration="8" affiliations="3">
			<name>D. J. Stewart</name>
		</author>
		<author numeration="9" affiliations="3">
			<name>C. E. Reeves</name>
		</author>
		<author numeration="10" affiliations="1,4">
			<name>R. M. Purvis</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">National Centre for Atmospheric Science, University of York, York, YO10 5DD, UK</affiliation>
		<affiliation numeration="2" content_type="html">School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK</affiliation>
		<affiliation numeration="3" content_type="html">School of Environmental Sciences, University of East Anglia, Norwich, NR4 7TJ, UK</affiliation>
		<affiliation numeration="4" content_type="html">Facility for Airborne Atmospheric Measurement, Cranfield, MK43 0AL, UK</affiliation>
	</affiliations>
	<abstract content_type="html">We report here top-down emissions estimate 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, NO&lt;sub&gt;x&lt;/sub&gt; and
VOCs of 0.72 Tg C yr&lt;sup&gt;&amp;minus;1&lt;/sup&gt;, 0.02 Tg N yr&lt;sup&gt;&amp;minus;1&lt;/sup&gt; and
0.28 Tg C yr&lt;sup&gt;&amp;minus;1&lt;/sup&gt;
respectively, consistent with bottom-up estimates for other developing
megacities. These emissions are attributed to the evaporation of fuels,
mobile combustion and natural gas emissions.</abstract>
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</article>

