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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-12-9763-2012</article-id>
<title-group>
<article-title>Observations of atmosphere-biosphere exchange of total and speciated peroxynitrates: nitrogen fluxes and biogenic sources of peroxynitrates</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Min</surname>
<given-names>K.-E.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</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>Pusede</surname>
<given-names>S. E.</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>Browne</surname>
<given-names>E. C.</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>LaFranchi</surname>
<given-names>B. W.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wooldridge</surname>
<given-names>P. J.</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>Wolfe</surname>
<given-names>G. M.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
<xref ref-type="aff" rid="aff6">
<sup>6</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Harrold</surname>
<given-names>S. A.</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>Thornton</surname>
<given-names>J. A.</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>Cohen</surname>
<given-names>R. 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-group><aff id="aff1">
<label>1</label>
<addr-line>University of California at Berkeley, Department of Earth and Planetary Science, CA, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>University of California at Berkeley, Department of Chemistry, CA, USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>University of Washington, Department of Atmospheric Sciences, Seattle, WA, USA</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>now at: NOAA Earth System Research Laboratory and Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>now at: Lawrence Livermore National Lab, Center for Accelerator Mass Spectrometry (CAMS), Livermore, CA, USA</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>now at: Department of Chemistry, University of Wisconsin, Madison, USA</addr-line>
</aff>
<pub-date pub-type="epub">
<day>29</day>
<month>10</month>
<year>2012</year>
</pub-date>
<volume>12</volume>
<issue>20</issue>
<fpage>9763</fpage>
<lpage>9773</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/12/9763/2012/acp-12-9763-2012.html">This article is available from http://www.atmos-chem-phys.net/12/9763/2012/acp-12-9763-2012.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys.net/12/9763/2012/acp-12-9763-2012.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys.net/12/9763/2012/acp-12-9763-2012.pdf</self-uri>
<abstract>
<p>Peroxynitrates are responsible for global scale transport of reactive
nitrogen. Recent laboratory observations suggest that they may also play an
important role in delivery of nutrients to plant canopies. We measured eddy
covariance fluxes of total peroxynitrates (&amp;Sigma;PNs) and three individual
peroxynitrates (APNs ≡ PAN + PPN + MPAN) over a ponderosa pine
forest during the Biosphere Effects on AeRosols and Photochemistry EXperiment
2009 (BEARPEX 2009). Concentrations of these species were also measured at
multiple heights above and within the canopy. While the above-canopy daytime
concentrations are nearly identical for &amp;Sigma;PNs and APNs, we observed the
downward flux of &amp;Sigma;PNs to be 30–60% slower than the flux of APNs.
The vertical concentration gradients of &amp;Sigma;PNs and APNs vary with time
of day and exhibit different temperature dependencies. These differences can
be explained by the production of peroxynitrates other than PAN, PPN, and
MPAN within the canopy (presumably as a consequence of biogenic VOC
emissions) and upward fluxes of these PN species. The impact of this implied
peroxynitrate flux on the interpretation of NO&lt;sub&gt;x&lt;/sub&gt; fluxes and
ecosystem N exchange is discussed.</p>
</abstract>
<counts><page-count count="11"/></counts>
</article-meta>
</front>
<body/>
<back>
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