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| Titel |
Ozone profile retrievals from the Ozone Monitoring Instrument |
| VerfasserIn |
X. Liu, P. K. Bhartia, K. Chance, R. J. D. Spurr, T. P. Kurosu |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 10, no. 5 ; Nr. 10, no. 5 (2010-03-12), S.2521-2537 |
| Datensatznummer |
250008185
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| Publikation (Nr.) |
 copernicus.org/acp-10-2521-2010.pdf |
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| Zusammenfassung |
| 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×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
degrees 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°. |
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