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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ACP</journal-id>
<journal-title-group>
<journal-title>Atmospheric Chemistry and Physics</journal-title>
<abbrev-journal-title abbrev-type="publisher">ACP</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1680-7324</issn>
<publisher><publisher-name>Copernicus GmbH</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/acp-11-7081-2011</article-id>
<title-group>
<article-title>Emissions and photochemistry of oxygenated VOCs in urban plumes in the Northeastern United States</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Sommariva</surname>
<given-names>R.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>de Gouw</surname>
<given-names>J. A.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Trainer</surname>
<given-names>M.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Atlas</surname>
<given-names>E.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Goldan</surname>
<given-names>P. D.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Kuster</surname>
<given-names>W. C.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Warneke</surname>
<given-names>C.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Fehsenfeld</surname>
<given-names>F. C.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Earth System Research Laboratory, NOAA, Boulder, CO, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>CIRES, University of Colorado, Boulder, CO, USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Rosenstiel School of Marine and Atmospheric Science, University of Miami, Miami, FL, USA</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>now at: School of Environmental Sciences, University of East Anglia, Norwich, UK</addr-line>
</aff>
<pub-date pub-type="epub">
<day>21</day>
<month>07</month>
<year>2011</year>
</pub-date>
<volume>11</volume>
<issue>14</issue>
<fpage>7081</fpage>
<lpage>7096</lpage>
<permissions>
<license xlink:type="simple">
<license-p>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.</license-p>
</license>
</permissions>
<self-uri xlink:href="http://www.atmos-chem-phys.net/11/7081/2011/acp-11-7081-2011.html">This article is available from http://www.atmos-chem-phys.net/11/7081/2011/acp-11-7081-2011.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys.net/11/7081/2011/acp-11-7081-2011.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys.net/11/7081/2011/acp-11-7081-2011.pdf</self-uri>
<abstract>
<p>Photochemical processes inside urban plumes in the Northeast of the United
States have been studied using a highly detailed chemical model, based upon
the Master Chemical Mechanism (MCM). The model results have been compared to
measurements of oxygenated VOCs (acetone, methyl ethyl ketone, acetaldehyde,
acetic acid and methanol) obtained during several flights of the NOAA WP-3D
aircraft, which sampled plumes from the New York City area during the ICARTT
campaign in 2004. The agreement between the model and the measurements was
within 40–60 % for all species, except acetic acid.
&lt;br&gt;&lt;br&gt;
The model results have been used to study the formation and photochemical
evolution of acetone, methyl ethyl ketone and acetaldehyde. Under the
conditions encountered during the ICARTT campaign, acetone is produced from
the oxidation of propane (24–28 %) and i-propanol (&lt;15 %) and
from a number of products of i-pentane oxidation. Methyl ethyl ketone (MEK)
is mostly produced from the oxidation of n-butane (20–30 %) and
3-methylpentane (&lt;40 %). Acetaldehyde is formed from several
precursors, mostly small alkenes, &gt;C5 alkanes, propanal and MEK. Ethane
and ethanol oxidation account, respectively, for 6–23 % and
5–25 % of acetaldehyde photochemical formation. The results
highlight the importance of alkanes for the photochemical production of
ketones and the role of hydroperoxides in sustaining their formation far from
the emission sources.</p>
</abstract>
<counts><page-count count="16"/></counts>
</article-meta>
</front>
<body/>
<back>
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