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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-8-5305-2008</article-id>
<title-group>
<article-title>Simultaneous atmospheric measurements using two Fourier transform infrared spectrometers at the Polar Environment Atmospheric Research Laboratory during spring 2006, and comparisons with the Atmospheric Chemistry Experiment-Fourier Transform Spectrometer</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Fu</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>Walker</surname>
<given-names>K. 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>Mittermeier</surname>
<given-names>R. L.</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>Strong</surname>
<given-names>K.</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>Sung</surname>
<given-names>K.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
<xref ref-type="aff" rid="aff8">
<sup>8</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Fast</surname>
<given-names>H.</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>Bernath</surname>
<given-names>P. F.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</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>Boone</surname>
<given-names>C. D.</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>Daffer</surname>
<given-names>W. 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>Fogal</surname>
<given-names>P.</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>Kolonjari</surname>
<given-names>F.</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>Loewen</surname>
<given-names>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>Manney</surname>
<given-names>G. L.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
<xref ref-type="aff" rid="aff7">
<sup>7</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Mikhailov</surname>
<given-names>O.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Department of Physics, University of Toronto, Toronto, Ontario, Canada</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Environment Canada, Toronto, Ontario, Canada</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Department of Chemistry, University of York, Heslington, York, UK</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA</addr-line>
</aff>
<aff id="aff6">
<label>6</label>
<addr-line>Columbus Technologies and Services Inc., Pasadena, California, USA</addr-line>
</aff>
<aff id="aff7">
<label>7</label>
<addr-line>also at: New Mexico Institute of Mining and Technology, Socorro, New Mexico, USA</addr-line>
</aff>
<aff id="aff8">
<label>8</label>
<addr-line>aow at: Jet Propulsion Lab., California Institute of Technology, Pasadena, California, USA</addr-line>
</aff>
<pub-date pub-type="epub">
<day>13</day>
<month>03</month>
<year>2008</year>
</pub-date>
<volume>8</volume>
<issue>2</issue>
<fpage>5305</fpage>
<lpage>5358</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/8/5305/2008/acpd-8-5305-2008.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/8/5305/2008/acpd-8-5305-2008.pdf</self-uri>
<abstract>
<p>The 2006 Canadian Arctic ACE (Atmospheric Chemistry Experiment) Validation
Campaign collected measurements at the Polar Environment Atmospheric
Research Laboratory (PEARL, 80.05&amp;deg; N, 86.42&amp;deg; W, 610 m above sea
level) at Eureka, Canada from 17 February to 31 March 2006. Two of the ten
instruments involved in the campaign, both Fourier transform spectrometers
(FTSs), were operated simultaneously, recording atmospheric solar absorption
spectra. The first instrument was an ABB Bomem DA8 high-resolution infrared
FTS. The second instrument was the Portable Atmospheric Research
Interferometric Spectrometer for the Infrared (PARIS-IR), the ground-based
version of the satellite-borne FTS on the ACE satellite (ACE-FTS). From the
measurements collected by these two ground-based instruments, total column
densities of seven stratospheric trace gases (O&lt;sub&gt;3&lt;/sub&gt;, HNO&lt;sub&gt;3&lt;/sub&gt;, NO&lt;sub&gt;2&lt;/sub&gt;,
HCl, HF, NO, and ClONO&lt;sub&gt;2&lt;/sub&gt; were retrieved using the optimal estimation
method and these results were compared. Since the two instruments sampled
the same portions of atmosphere by synchronizing observations during the
campaign, the biases in retrieved columns from the two spectrometers
represent the instrumental differences. These differences were consistent
with those seen in previous FTS intercomparison studies. Partial column
results from the ground-based spectrometers were also compared with partial
columns derived from ACE-FTS version 2.2 (including updates for O&lt;sub&gt;3&lt;/sub&gt;, HDO
and N&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;5&lt;/sub&gt; profiles and the differences found were consistent with
the other validation comparison studies for the ACE-FTS version 2.2 data
products. Column densities of O&lt;sub&gt;3&lt;/sub&gt;, HCl, ClONO&lt;sub&gt;2&lt;/sub&gt;, and HNO&lt;sub&gt;3&lt;/sub&gt; from
the three FTSs were normalized with respect to HF and used to probe the time
evolution of the chemical constituents in the atmosphere over Eureka during
spring 2006.</p>
</abstract>
<counts><page-count count="54"/></counts>
</article-meta>
</front>
<body/>
<back>
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