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| Titel |
Validation of northern latitude Tropospheric Emission Spectrometer stare ozone profiles with ARC-IONS sondes during ARCTAS: sensitivity, bias and error analysis |
| VerfasserIn |
C. S. Boxe, J. R. Worden, K. W. Bowman, S. S. Kulawik, J. L. Neu, W. C. Ford, G. B. Osterman, R. L. Herman, A. Eldering, D. W. Tarasick, A. M. Thompson, D. C. Doughty, M. R. Hoffmann, S. J. Oltmans |
| 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. 20 ; Nr. 10, no. 20 (2010-10-20), S.9901-9914 |
| Datensatznummer |
250008841
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| Publikation (Nr.) |
 copernicus.org/acp-10-9901-2010.pdf |
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| Zusammenfassung |
| We compare Tropospheric Emission Spectrometer (TES) versions 3 and
4, V003 and V004, respectively, nadir-stare ozone profiles with
ozonesonde profiles from the Arctic Intensive Ozonesonde Network
Study (ARCIONS,
http://croc.gsfc.nasa.gov/arcions/ during the
Arctic Research on the Composition of the Troposphere from Aircraft
and Satellites (ARCTAS) field mission. The ozonesonde data are from
launches timed to match Aura's overpass, where 11 coincidences
spanned 44° N to 71° N from April to July 2008.
Using the TES "stare" observation mode, 32 observations are taken
over each coincidental ozonesonde launch. By effectively sampling
the same air mass 32 times, comparisons are made between the
empirically-calculated random errors to the expected random errors
from measurement noise, temperature and interfering species, such as
water. This study represents the first validation of high latitude
(>70°) TES ozone. We find that the calculated errors are
consistent with the actual errors with a similar vertical
distribution that varies between 5% and 20% for V003 and V004
TES data. In general, TES ozone profiles are positively biased (by
less than 15%) from the surface to the upper-troposphere (~1000
to 100 hPa) and negatively biased (by less than 20%) from
the upper-troposphere to the lower-stratosphere (100 to 30 hPa)
when compared to the ozonesonde data. Lastly, for V003 and V004 TES
data between 44° N and 71° N there is variability in
the mean biases (from −14 to +15%), mean theoretical errors
(from 6 to 13%), and mean random errors (from 9 to 19%). |
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