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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>
<abbrev-journal-title abbrev-type="nlm-ta">Atmos. Chem. Phys.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1680-7324</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/acp-12-2603-2012</article-id>
<title-group>
<article-title>Ozone zonal asymmetry and planetary wave characterization during Antarctic spring</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Ialongo</surname>
<given-names>I.</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>Sofieva</surname>
<given-names>V.</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>Kalakoski</surname>
<given-names>N.</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>Tamminen</surname>
<given-names>J.</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>Kyrölä</surname>
<given-names>E.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Finnish Meteorological Institute, Earth Observation Unit, Helsinki, Finland</addr-line>
</aff>
<pub-date pub-type="epub">
<day>08</day>
<month>03</month>
<year>2012</year>
</pub-date>
<volume>12</volume>
<issue>5</issue>
<fpage>2603</fpage>
<lpage>2614</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2012 I. Ialongo et al.</copyright-statement>
<copyright-year>2012</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/3.0/">https://creativecommons.org/licenses/by/3.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://acp.copernicus.org/articles/12/2603/2012/acp-12-2603-2012.html">This article is available from https://acp.copernicus.org/articles/12/2603/2012/acp-12-2603-2012.html</self-uri>
<self-uri xlink:href="https://acp.copernicus.org/articles/12/2603/2012/acp-12-2603-2012.pdf">The full text article is available as a PDF file from https://acp.copernicus.org/articles/12/2603/2012/acp-12-2603-2012.pdf</self-uri>
<abstract>
<p>A large zonal asymmetry of ozone has been observed over Antarctica during
winter-spring, when the ozone hole develops. It is caused by a planetary
wave-driven displacement of the polar vortex. The total ozone data by OMI
(Ozone Monitoring Instrument) and the ozone profiles by MLS (Microwave Limb
Sounder) and GOMOS (Global Ozone Monitoring by Occultation of Stars) were
analysed to characterize the ozone zonal asymmetry and the wave activity
during Antarctic spring. Both total ozone and profile data have shown a
persistent zonal asymmetry over the last years, which is usually observed
from September to mid-December. The largest amplitudes of planetary waves at
65° S (the perturbations can achieve up to 50% of zonal mean values)
is observed in October. The wave activity is dominated by the
quasi-stationary wave 1 component, while the wave 2 is mainly an eastward travelling
wave. Wave numbers 1 and 2 generally explain more than the 90% of the ozone
longitudinal variations. Both GOMOS and MLS ozone profile data show that
ozone zonal asymmetry covers the whole stratosphere and extends up to the
altitudes of 60–65 km. The wave amplitudes in ozone mixing ratio decay with
altitude, with maxima (up to 50%) below 30 km.
&lt;br&gt;&lt;br&gt;
The characterization of the ozone zonal asymmetry has become important in the
climate research. The inclusion of the polar zonal asymmetry in the climate
models is essential for an accurate estimation of the future temperature
trends. This information might also be important for retrieval algorithms
that rely on ozone a priori information.</p>
</abstract>
<counts><page-count count="12"/></counts>
</article-meta>
</front>
<body/>
<back>
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