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<front>
<journal-meta>
<journal-id journal-id-type="publisher">ACPD</journal-id>
<journal-title-group>
<journal-title>Atmospheric Chemistry and Physics Discussions</journal-title>
<abbrev-journal-title abbrev-type="publisher">ACPD</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1680-7375</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/acpd-10-24371-2010</article-id>
<title-group>
<article-title>Chemical, physical, and optical  evolution of biomass burning aerosols:  a case study</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Adler</surname>
<given-names>G.</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>Flores</surname>
<given-names>J. M.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Abo Riziq</surname>
<given-names>A.</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>Borrmann</surname>
<given-names>S.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Rudich</surname>
<given-names>Y.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Department of Environmental Sciences, Weizmann Institute of  Science, Rehovot 76100, Israel</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Department of Particle  Chemistry, Max Planck Institute for Chemistry, Mainz 55128, Germany</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>University of Mainz, Institute for Atmospheric Physics, Mainz  55099, Germany</addr-line>
</aff>
<pub-date pub-type="epub">
<day>20</day>
<month>10</month>
<year>2010</year>
</pub-date>
<volume>10</volume>
<issue>10</issue>
<fpage>24371</fpage>
<lpage>24407</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>
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<self-uri xlink:href="http://www.atmos-chem-phys-discuss.net/10/24371/2010/acpd-10-24371-2010.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/10/24371/2010/acpd-10-24371-2010.pdf</self-uri>
<abstract>
<p>In-situ chemical composition measurements of ambient aerosols have
      been used for characterizing the evolution of submicron aerosols from
      a large anthropogenic biomass burning (BB) event in Israel. A high
      resolution Time of Flight Aerosol Mass Spectrometer (Hi-RES-TOF-AMS)
      was used to follow the chemical evolution of BB aerosols during
      a night-long, extensive nationwide wood burning event and during the
      following day. While extensive BB is not common in this region,
      burning of agricultural waste is a common practice. The aging process
      of the BB aerosols was followed through their chemical, physical and
      optical properties. Mass spectrometric analysis of the aerosol organic
      component showed that aerosol aging is characterized by shifting from
      less oxidized fresh BB aerosols to more oxidized aerosols. Evidence
      for aerosol aging during the day following the BB event was indicated
      by an increase in the organic mass, its oxidation state, the total
      aerosol concentration, and a shift in the modal particle diameter. The
      effective broadband refractive index (EBRI) was derived using a white
      light optical particle counter (WELAS). The average EBRI for a mixed
      population of aerosols dominated by open fires was
      &lt;i&gt;m&lt;/i&gt;=1.53(&amp;plusmn;0.03)+0.07i(&amp;plusmn;0.03), during the smoldering
      phase of the fires we found the EBRI to be
      &lt;i&gt;m&lt;/i&gt;=1.54(&amp;plusmn;0.01)+0.04i(&amp;plusmn;0.01) compared to
      &lt;i&gt;m&lt;/i&gt;=1.49(&amp;plusmn;0.01)+0.02i(&amp;plusmn;0.01) of the aged aerosols
      during the following day. This change indicates a decrease in the
      overall aerosol absorption and scattering. Elevated levels of
      particulate Polycyclic Aromatic Hydrocarbons (PAHs) were detected
      during the entire event, which suggest possible implications for human
      health during such extensive event.</p>
</abstract>
<counts><page-count count="37"/></counts>
</article-meta>
</front>
<body/>
<back>
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