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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" article-type="research-article" dtd-version="3.0" xml:lang="en">
<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-10-8657-2010</article-id>
<title-group>
<article-title>Sulfur dioxide emissions in China and sulfur trends in East Asia since 2000</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Lu</surname>
<given-names>Z.</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>Streets</surname>
<given-names>D. 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>Zhang</surname>
<given-names>Q.</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>Wang</surname>
<given-names>S.</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</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>Carmichael</surname>
<given-names>G. R.</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Cheng</surname>
<given-names>Y. F.</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wei</surname>
<given-names>C.</given-names>
</name>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Chin</surname>
<given-names>M.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Diehl</surname>
<given-names>T.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Tan</surname>
<given-names>Q.</given-names>
</name>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Decision and Information Sciences Division, Argonne National Laboratory, Argonne, IL 60439, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Center for Earth System Science, Tsinghua University, Beijing, 100084, China</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Department of Environmental Science and Engineering, Tsinghua University, Beijing, 100084, China</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Center for Global and Regional Environmental Research, University of Iowa, Iowa City, IA 52242, USA</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>Laboratory for Atmospheres, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA</addr-line>
</aff>
<pub-date pub-type="epub">
<day>06</day>
<month>04</month>
<year>2010</year>
</pub-date>
<volume>10</volume>
<issue>4</issue>
<fpage>8657</fpage>
<lpage>8715</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-discuss.net/10/8657/2010/acpd-10-8657-2010.html">This article is available from http://www.atmos-chem-phys-discuss.net/10/8657/2010/acpd-10-8657-2010.html</self-uri>
<self-uri xlink:href="http://www.atmos-chem-phys-discuss.net/10/8657/2010/acpd-10-8657-2010.pdf">The full text article is available as a PDF file from http://www.atmos-chem-phys-discuss.net/10/8657/2010/acpd-10-8657-2010.pdf</self-uri>
<abstract>
<p>With the rapid development of the economy, the sulfur dioxide (SO&lt;sub&gt;2&lt;/sub&gt;)
emission from China since 2000 is of increasing concern. In this study, we
estimate the annual SO&lt;sub&gt;2&lt;/sub&gt; emission in China after 2000 using a
technology-based methodology specifically for China. From 2000 to 2006,
total SO&lt;sub&gt;2&lt;/sub&gt; emission in China increased by 53%, from 21.7 Tg to 33.2 Tg,
at an annual growth rate of 7.3%. Emissions from power plants are the
main sources of SO&lt;sub&gt;2&lt;/sub&gt; in China and they increased from 10.6 Tg to 18.6 Tg
in the same period. Geographically, emission from north China increased by
85%, whereas that from the south increased by only 28%. The emission
growth rate slowed around 2005, and emissions began to decrease after 2006
mainly due to the wide application of Flue-Gas Desulfurization (FGD) devices
in power plants in response to a new policy of China&apos;s government. This
paper shows that the trend of estimated SO&lt;sub&gt;2&lt;/sub&gt; emission in China is
consistent with the trends of SO&lt;sub&gt;2&lt;/sub&gt; concentration and acid rain pH and
frequency in China, as well as with the increasing trends of background
SO&lt;sub&gt;2&lt;/sub&gt; and sulfate concentration in East Asia. A longitudinal gradient in
the percentage change of urban SO&lt;sub&gt;2&lt;/sub&gt; concentration in Japan is found
during 2000–2007, indicating that the decrease of urban SO&lt;sub&gt;2&lt;/sub&gt; is lower in
areas close to the Asian continent. This implies that the transport of
increasing SO&lt;sub&gt;2&lt;/sub&gt; from the Asian continent partially counteracts the local
reduction of SO&lt;sub&gt;2&lt;/sub&gt; emission downwind. The Aerosol Optical Depth (AOD)
products of Moderate Resolution Imaging Spectroradiometer (MODIS) are found
to be highly correlated with the Surface Solar Radiation (SSR) measurements
in East Asia. Using MODIS AOD data as a surrogate of SSR, we found that
China and East Asia excluding Japan underwent a continuous dimming after
2000, which is in line with the dramatic increase in SO&lt;sub&gt;2&lt;/sub&gt; emission in
East Asia. The trends of AOD from both satellite retrievals and model over
East Asia are also consistent with the trend of SO&lt;sub&gt;2&lt;/sub&gt; emission in China,
especially during the second half of the year, when sulfur contributes the
largest fraction of AOD. The arrested growth in SO&lt;sub&gt;2&lt;/sub&gt; emissions since
2006 is also reflected in the decreasing trends of SO&lt;sub&gt;2&lt;/sub&gt; and
SO&lt;sub&gt;4&lt;/sub&gt;&lt;sup&gt;2&amp;minus;&lt;/sup&gt; concentrations, acid rain pH values and frequencies, and AOD
over East Asia.</p>
</abstract>
<counts><page-count count="59"/></counts>
</article-meta>
</front>
<body/>
<back>
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