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	<journal>
		<journal_title>Atmospheric Chemistry and Physics</journal_title>
		<journal_url>www.atmos-chem-phys.net</journal_url>
		<issn>1680-7316</issn>
		<eissn>1680-7324</eissn>
		<volume_number>7</volume_number>
		<issue_number>5</issue_number>
		<publication_year>2007</publication_year>
	</journal>
	<doi>10.5194/acp-7-1293-2007</doi>
	<article_url>http://www.atmos-chem-phys.net/7/1293/2007/</article_url>
	<abstract_html>http://www.atmos-chem-phys.net/7/1293/2007/acp-7-1293-2007.html</abstract_html>
	<fulltext_pdf>http://www.atmos-chem-phys.net/7/1293/2007/acp-7-1293-2007.pdf</fulltext_pdf>
	<start_page>1293</start_page>
	<end_page>1303</end_page>
	<publication_date>2007-02-22</publication_date>
	<article_title content_type="html">MAX-DOAS detection of glyoxal during ICARTT 2004</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>R. Sinreich</name>
			<email>roman.sinreich@iup.uni-heidelberg.de</email>
		</author>
		<author numeration="2" affiliations="2,3">
			<name>R. Volkamer</name>
		</author>
		<author numeration="3" affiliations="1,4">
			<name>F. Filsinger</name>
		</author>
		<author numeration="4" affiliations="1">
			<name>U. Frieß</name>
		</author>
		<author numeration="5" affiliations="1">
			<name>C. Kern</name>
		</author>
		<author numeration="6" affiliations="1">
			<name>U. Platt</name>
		</author>
		<author numeration="7" affiliations="1">
			<name>O. Sebastián</name>
		</author>
		<author numeration="8" affiliations="1,5">
			<name>T. Wagner</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Institut für Umweltphysik, Universität Heidelberg, Heidelberg, Germany</affiliation>
		<affiliation numeration="2" content_type="html">Massachusetts Institute of Technology, Cambridge, MA, USA</affiliation>
		<affiliation numeration="3" content_type="html">now at: University of California, San Diego, La Jolla, CA, USA</affiliation>
		<affiliation numeration="4" content_type="html">now at: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Berlin, Germany</affiliation>
		<affiliation numeration="5" content_type="html">now at: Max-Planck Institute for Chemistry, Mainz, Germany</affiliation>
	</affiliations>
	<abstract content_type="html">The direct detection of glyoxal (CHOCHO), the smallest &amp;alpha;-dicarbonyl,
in the open atmosphere by active differential optical absorption
spectroscopy (DOAS) has recently been demonstrated (Volkamer et al., 2005a)
and triggered the very recent successful detection of CHOCHO from space
(Kurosu et al., 2005; Wittrock et al., 2006; Beirle et al., 2006). Here we
report the first comprehensive analysis of CHOCHO by passive multi axis
differential optical absorption spectroscopy (MAX-DOAS). CHOCHO and NO&lt;sub&gt;2&lt;/sub&gt;
slant column measurements were conducted at the Massachusetts Institute of
Technology (MIT), Cambridge, USA, and on board the research vessel Ron Brown
in the Gulf of Maine as part of the International Consortium for Atmospheric
Research on Transport and Transformation (ICARTT) 2004 campaign. For a day
with nearly clear sky conditions, radiative transfer modeling was employed
to derive diurnal CHOCHO mixing ratios in the planetary boundary layer (PBL)
for both sites. CHOCHO mixing ratios at MIT varied from 40 to 140 ppt, with
peak values observed around noon. Mixing ratios over the Gulf of Maine were
found to be up to 2.5 times larger than at MIT. The CHOCHO-to-NO&lt;sub&gt;2&lt;/sub&gt; ratio
at MIT was &amp;lt;0.03, and enhancements of this ratio by up to two orders of
magnitude were found over the Gulf of Maine. This paper focuses on the
methodological aspects involved with MAX-DOAS measurements of CHOCHO.</abstract>
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</article>

