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<front>
<journal-meta>
<journal-id journal-id-type="publisher">AMT</journal-id>
<journal-title-group>
<journal-title>Atmospheric Measurement Techniques</journal-title>
<abbrev-journal-title abbrev-type="publisher">AMT</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">Atmos. Meas. Tech.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub">1867-8548</issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>GÃ¶ttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/amt-4-875-2011</article-id>
<title-group>
<article-title>Surface solar irradiance from SCIAMACHY measurements: algorithm and validation</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Wang</surname>
<given-names>P.</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>Stammes</surname>
<given-names>P.</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>Mueller</surname>
<given-names>R.</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Royal Netherlands Meteorological Institute (KNMI), De Bilt, The Netherlands</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Climate Monitoring Satellite Application Facility, German Meteorological Service (DWD), Offenbach, Germany</addr-line>
</aff>
<pub-date pub-type="epub">
<day>16</day>
<month>05</month>
<year>2011</year>
</pub-date>
<volume>4</volume>
<issue>5</issue>
<fpage>875</fpage>
<lpage>891</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2011 P. Wang et al.</copyright-statement>
<copyright-year>2011</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://amt.copernicus.org/articles/4/875/2011/amt-4-875-2011.html">This article is available from https://amt.copernicus.org/articles/4/875/2011/amt-4-875-2011.html</self-uri>
<self-uri xlink:href="https://amt.copernicus.org/articles/4/875/2011/amt-4-875-2011.pdf">The full text article is available as a PDF file from https://amt.copernicus.org/articles/4/875/2011/amt-4-875-2011.pdf</self-uri>
<abstract>
<p>Broadband surface solar irradiances (SSI) are, for the first time, derived
from SCIAMACHY (SCanning Imaging Absorption spectroMeter for Atmospheric
CartograpHY) satellite measurements. The retrieval algorithm, called FRESCO
(Fast REtrieval Scheme for Clouds from the Oxygen A band) SSI, is similar to
the Heliosat method. In contrast to the standard Heliosat method, the cloud
index is replaced by the effective cloud fraction derived from the FRESCO
cloud algorithm. The MAGIC (Mesoscale Atmospheric Global Irradiance Code)
algorithm is used to calculate clear-sky SSI. The SCIAMACHY SSI product is
validated against globally distributed BSRN (Baseline Surface Radiation
Network) measurements and compared with ISCCP-FD (International Satellite
Cloud Climatology Project Flux Dataset) surface shortwave downwelling fluxes
(SDF). For one year of data in 2008, the mean difference between the
instantaneous SCIAMACHY SSI and the hourly mean BSRN global irradiances is
âˆ’4 W m&lt;sup&gt;âˆ’2&lt;/sup&gt; (âˆ’1 %) with a standard deviation of 101 W m&lt;sup&gt;âˆ’2&lt;/sup&gt; (20 %).
The mean difference between the globally monthly mean SCIAMACHY SSI and
ISCCP-FD SDF is less than âˆ’12 W m&lt;sup&gt;âˆ’2&lt;/sup&gt; (âˆ’2 %) for every month in 2006 and
the standard deviation is 62 W m&lt;sup&gt;âˆ’2&lt;/sup&gt; (12 %). The correlation coefficient
is 0.93 between SCIAMACHY SSI and BSRN global irradiances and is greater
than 0.96 between SCIAMACHY SSI and ISCCP-FD SDF. The evaluation results
suggest that the SCIAMACHY SSI product achieves similar mean bias error and
root mean square error as the surface solar irradiances derived from polar
orbiting satellites with higher spatial resolution.</p>
</abstract>
<counts><page-count count="17"/></counts>
</article-meta>
</front>
<body/>
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