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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>5</issue_number>
		<publication_year>2009</publication_year>
	</journal>
	<doi>10.5194/acpd-9-22693-2009</doi>
	<article_url>http://www.atmos-chem-phys-discuss.net/9/22693/2009/</article_url>
	<abstract_html>http://www.atmos-chem-phys-discuss.net/9/22693/2009/acpd-9-22693-2009.html</abstract_html>
	<fulltext_pdf>http://www.atmos-chem-phys-discuss.net/9/22693/2009/acpd-9-22693-2009.pdf</fulltext_pdf>
	<start_page>22693</start_page>
	<end_page>22738</end_page>
	<publication_date>2009-10-27</publication_date>
	<article_title content_type="html">Ozone profile retrievals from the Ozone Monitoring Instrument</article_title>
	<authors>
		<author numeration="1" affiliations="1,2,3">
			<name>X. Liu</name>
			<email>xiong.liu-1@nasa.gov</email>
		</author>
		<author numeration="2" affiliations="3">
			<name>P. K. Bhartia</name>
		</author>
		<author numeration="3" affiliations="2">
			<name>K. Chance</name>
		</author>
		<author numeration="4" affiliations="4">
			<name>R. J. D. Spurr</name>
		</author>
		<author numeration="5" affiliations="2">
			<name>T. P. Kurosu</name>
		</author>
	</authors>
	<affiliations>
		<affiliation numeration="1" content_type="html">Goddard Earth Sciences and Technology Center, University of Maryland, Baltimore County, Baltimore, Maryland, USA</affiliation>
		<affiliation numeration="2" content_type="html">Harvard-Smithsonian Center for Astrophysics, Cambridge, Massachusetts, USA</affiliation>
		<affiliation numeration="3" content_type="html">NASA Goddard Space Flight Center, Greenbelt, Maryland, USA</affiliation>
		<affiliation numeration="4" content_type="html">RT Solutions Inc., Cambridge, Massachusetts, USA</affiliation>
	</affiliations>
	<abstract content_type="html">Ozone profiles from the surface to about 60 km are retrieved
from Ozone Monitoring Instrument (OMI) ultraviolet radiances using the
optimal estimation technique. OMI provides daily ozone profiles for
the entire sunlit portion of the earth at a horizontal resolution of
13 km&amp;times;48 km for the nadir position. The
retrieved profiles have sufficient accuracy in the troposphere to see
ozone perturbations caused by convection, biomass burning and
anthropogenic pollution, and to track their spatiotemporal
transport. However, to achieve such accuracy it has been necessary to
calibrate OMI radiances carefully (using two days of Aura/Microwave
Limb Sounder data taken in the tropics). The retrieved profiles
contain ~6–7° of freedom for signal, with 5–7
in the stratosphere and 0–1.5 in the troposphere. Vertical resolution
varies from 7–11 km in the stratosphere to 10–14 km
in the troposphere. Retrieval precisions range from 1% in the
middle stratosphere to 10% in the lower stratosphere and
troposphere. Solution errors (i.e., root sum square of precisions and
smoothing errors) vary from 1–6% in the middle stratosphere to
6–35% in the troposphere, and are dominated by smoothing
errors. Total, stratospheric, and tropospheric ozone columns can be
retrieved with solution errors typically in the few Dobson unit range
at solar zenith angles less than 80&amp;deg;.</abstract>
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