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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-9-2695-2009</article-id>
<title-group>
<article-title>The impact of weather and atmospheric circulation on O&lt;sub&gt;3&lt;/sub&gt; and PM&lt;sub&gt;10&lt;/sub&gt; levels at a rural mid-latitude site</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Demuzere</surname>
<given-names>M.</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>Trigo</surname>
<given-names>R. M.</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>Vila-Guerau de Arellano</surname>
<given-names>J.</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>van Lipzig</surname>
<given-names>N. P. M.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Earth and environmental Sciences, Celestijnenlaan 200E, 3001 Heverlee (Leuven), Katholieke Universiteit Leuven, Belgium</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Centro de Geofísica da Universidade de Lisboa (CGUL), IDL, University of Lisbon, Fac. Ciencias, Campo Grande, Ed. C8, Piso 6, 1749-016 Lisbon, Portugal</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Meteorology and Air Quality Section, Wageningen University, Droevendaalsesteeg 4, P.O. Box 47, 6700 AA Wageningen, The Netherlands</addr-line>
</aff>
<pub-date pub-type="epub">
<day>23</day>
<month>04</month>
<year>2009</year>
</pub-date>
<volume>9</volume>
<issue>8</issue>
<fpage>2695</fpage>
<lpage>2714</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/9/2695/2009/acp-9-2695-2009.html">This article is available from http://www.atmos-chem-phys.net/9/2695/2009/acp-9-2695-2009.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys.net/9/2695/2009/acp-9-2695-2009.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys.net/9/2695/2009/acp-9-2695-2009.pdf</self-uri>
<abstract>
<p>In spite of the strict EU regulations, concentrations of surface ozone and
PM&lt;sub&gt;10&lt;/sub&gt; often exceed the pollution standards for the Netherlands and
Europe. Their concentrations are controlled by (precursor) emissions, social
and economic developments and a complex combination of meteorological
actors. This study tackles the latter, and provides insight in the
meteorological processes that play a role in O&lt;sub&gt;3&lt;/sub&gt; and PM&lt;sub&gt;10&lt;/sub&gt; levels in
rural mid-latitudes sites in the Netherlands. The relations between
meteorological actors and air quality are studied on a local scale based on
observations from four rural sites and are determined by a comprehensive
correlation analysis and a multiple regression (MLR) analysis in 2 modes,
with and without air quality variables as predictors. Furthermore, the
objective Lamb Weather Type approach is used to assess the influence of the
large-scale circulation on air quality. Keeping in mind its future use in
downscaling future climate scenarios for air quality purposes, special
emphasis is given to an appropriate selection of the regressor variables
readily available from operational meteorological forecasts or AOGCMs
(Atmosphere-Ocean coupled General Circulation Models). The regression models
perform satisfactory, especially for O&lt;sub&gt;3&lt;/sub&gt;, with an (&lt;i&gt;R&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt; of 57.0%
and 25.0% for PM&lt;sub&gt;10&lt;/sub&gt;. Including previous day air quality information
increases significantly the models performance by 15% (O&lt;sub&gt;3&lt;/sub&gt;) and
18% (PM&lt;sub&gt;10&lt;/sub&gt;). The Lamb weather types show a seasonal distinct pattern
for high (low) episodes of average O&lt;sub&gt;3&lt;/sub&gt; and PM&lt;sub&gt;10&lt;/sub&gt; concentrations, and
these are clear related with the meteorology-air quality correlation
analysis. Although using a circulation type approach can provide important
additional physical relations forward, our analysis reveals the circulation
method is limited in terms of short-term air quality forecast for both
O&lt;sub&gt;3&lt;/sub&gt; and PM&lt;sub&gt;10&lt;/sub&gt; (&lt;i&gt;R&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt; between 0.12 and 23%). In summary, it is
concluded that the use of a regression model is more promising for
short-term downscaling from climate scenarios than the use of a weather type
classification approach.</p>
</abstract>
<counts><page-count count="20"/></counts>
</article-meta>
</front>
<body/>
<back>
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