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<article language="en">
	<journal>
		<journal_title>Atmospheric Chemistry and Physics Discussions</journal_title>
		<journal_url>www.atmos-chem-phys-discuss.net</journal_url>
		<issn>1680-7367</issn>
		<eissn>1680-7375</eissn>
		<volume_number>9</volume_number>
		<issue_number>3</issue_number>
		<publication_year>2009</publication_year>
	</journal>
	<doi>10.5194/acpd-9-12829-2009</doi>
	<article_url>http://www.atmos-chem-phys-discuss.net/9/12829/2009/</article_url>
	<abstract_html>http://www.atmos-chem-phys-discuss.net/9/12829/2009/acpd-9-12829-2009.html</abstract_html>
	<fulltext_pdf>http://www.atmos-chem-phys-discuss.net/9/12829/2009/acpd-9-12829-2009.pdf</fulltext_pdf>
	<start_page>12829</start_page>
	<end_page>12856</end_page>
	<publication_date>2009-06-04</publication_date>
	<article_title content_type="html">Evaluating the potential of IASI ozone observations to constrain simulated surface ozone concentrations</article_title>
	<authors>
		<author numeration="1" affiliations="1">
			<name>G. Foret</name>
			<email>foret@lisa.univ-paris12.fr</email>
		</author>
		<author numeration="2" affiliations="1">
			<name>M. Beekmann</name>
		</author>
		<author numeration="3" affiliations="1">
			<name>M. Eremenko</name>
		</author>
		<author numeration="4" affiliations="1,2">
			<name>L. Hamaoui</name>
		</author>
		<author numeration="5" affiliations="1">
			<name>C. Schmechtig</name>
		</author>
		<author numeration="6" affiliations="1">
			<name>C. Keim</name>
		</author>
		<author numeration="7" affiliations="1">
			<name>G. Dufour</name>
		</author>
		<author numeration="8" affiliations="1,3">
			<name>A. Boynard</name>
		</author>
		<author numeration="9" affiliations="2">
			<name>A. Ung</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">UniversitÃ© Paris 12 et 7, CNRS UMR 7583, Laboratoire Interuniversitaire des SystÃ¨mes AtmosphÃ©riques/IPSL, CrÃ©teil, France</affiliation>
		<affiliation numeration="2" content_type="html">Institut National de l&apos;Environnement Industriel et des Risques, Chronic Risks Division, Parc Technologique Alata, Verneuil-en-Halatte, France</affiliation>
		<affiliation numeration="3" content_type="html">UPMC UniversitÃ© Paris 06, CNRS UMR 8190, Laboratoire AtmosphÃ¨res, Milieux, Observations Spatiales/IPSL, Paris, France</affiliation>
	</affiliations>
	<abstract content_type="html">A tracer study has been performed for two summers in 2003 and 2004 with a
regional chemistry- transport model in order to evaluate the potential
constraint that tropospheric ozone observations from nadir viewing infrared
sounders like IASI or TES exert on modeled near surface ozone. As these
instruments show high sensitivity in the free troposphere, but low
sensitivity at ground, our study addresses which amount of this information
is transferred to ground through vertical transport processes. Within the
European model domain, and within a time span of 4 days, only ozone like
tracers initialised in vertical layers above 500 hPa are transported to the
surface. For a tracer initialised between 800 and 700 hPa, seven percent
reaches the surface within one to three days, when averaging over the whole
European model domain, but more than double of it over the Mediterranean
sea. These results are confirmed by a second tracer study taking into
account averaging kernels related to IASI retrievals.</abstract>
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