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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-7-5437-2007</article-id>
<title-group>
<article-title>ACE-FTS observation of a young biomass burning plume: first reported measurements of C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt;, C&lt;sub&gt;3&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt;O, H&lt;sub&gt;2&lt;/sub&gt;CO and PAN by infrared occultation from space</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Coheur</surname>
<given-names>P.-F.</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>Herbin</surname>
<given-names>H.</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>Clerbaux</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>Hurtmans</surname>
<given-names>D.</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>Wespes</surname>
<given-names>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>Carleer</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>Turquety</surname>
<given-names>S.</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>Rinsland</surname>
<given-names>C. P.</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>Remedios</surname>
<given-names>J.</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Hauglustaine</surname>
<given-names>D.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Boone</surname>
<given-names>C. D.</given-names>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Bernath</surname>
<given-names>P. F.</given-names>
</name>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Spectroscopie de l&apos;atmosphère, Chimie Quantique et Photophysique, Univ. Libre de Bruxelles (U.L.B.), Brussels, Belgium</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Service d&apos;Aéronomie/Institut Pierre-Simon Laplace, CNRS, Université Pierre et Marie Curie-Paris 6, France</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>NASA Langley Research Center, Mail Stop 401A, Hampton, VA 23681-2199, USA</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Earth Observation Science, Space Research Centre, Department of Physics &amp; Astronomy, University of Leicester, University Road, Leicester, LE1 7RH, UK</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>Laboratoire des Sciences du Climat et de l&apos;Environnement (LSCE)/Institut Pierre-Simon Laplace, CEA-CNRS, 91191 Gif-sur-Yvette CEDEX, France</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>Department of Chemistry, University of Waterloo, Waterloo, Ontario, N2L 3G1, Canada</addr-line>
</aff>
<aff id="aff7">
<label>7</label>
<addr-line>Department of Chemistry, University of York, Heslington, York YO10 5DD, UK</addr-line>
</aff>
<pub-date pub-type="epub">
<day>19</day>
<month>10</month>
<year>2007</year>
</pub-date>
<volume>7</volume>
<issue>20</issue>
<fpage>5437</fpage>
<lpage>5446</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/7/5437/2007/acp-7-5437-2007.html">This article is available from http://www.atmos-chem-phys.net/7/5437/2007/acp-7-5437-2007.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys.net/7/5437/2007/acp-7-5437-2007.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys.net/7/5437/2007/acp-7-5437-2007.pdf</self-uri>
<abstract>
<p>In the course of our study of the upper tropospheric composition with the
infrared Atmospheric Chemistry Experiment &amp;ndash; Fourier Transform Spectrometer
(ACE&amp;ndash;FTS), we found an occultation sequence that on 8 October 2005, sampled
a remarkable plume near the east coast of Tanzania. Model simulations of the
CO distribution in the Southern hemisphere are performed for this period and
they suggest that the emissions for this event likely originated from a
nearby forest fire, after which the plume was transported from the source
region to the upper troposphere. Taking advantage of the very high
signal-to-noise ratio of the ACE&amp;ndash;FTS spectra over a wide wavenumber range
(750&amp;ndash;4400 cm&lt;sup&gt;&amp;minus;1&lt;/sup&gt;), we present in-depth analyses of the chemical
composition of this plume in the middle and upper troposphere, focusing on
the measurements of weakly absorbing pollutants. For this specific biomass
burning event, we report simultaneous observations of an unprecedented
number of organic species. Measurements of C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt; (ethene),
C&lt;sub&gt;3&lt;/sub&gt;H&lt;sub&gt;4&lt;/sub&gt; (propyne), H&lt;sub&gt;2&lt;/sub&gt;CO (formaldehyde), C&lt;sub&gt;3&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt;O
(acetone) and CH&lt;sub&gt;3&lt;/sub&gt;COO&lt;sub&gt;2&lt;/sub&gt;NO&lt;sub&gt;2&lt;/sub&gt; (peroxyacetylnitrate, abbreviated as
PAN) are the first reported detections using infrared occultation
spectroscopy from satellites. Based on the lifetime of the emitted species,
we discuss the photochemical age of the plume and also report, whenever
possible, the enhancement ratios relative to CO.</p>
</abstract>
<counts><page-count count="10"/></counts>
</article-meta>
</front>
<body/>
<back>
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