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| Titel |
A thermal infrared instrument onboard a geostationary platform for CO and O3 measurements in the lowermost troposphere: Observing System Simulation Experiments (OSSE) |
| VerfasserIn |
M. Claeyman, J.-L. Attié, V.-H. Peuch, L. Amraoui, W. A. Lahoz, B. Josse, M. Joly, J. Barré, P. Ricaud, S. Massart, A. Piacentini, T. Clarmann, M. Höpfner, J. Orphal, J.-M. Flaud, D. P. Edwards |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 4, no. 8 ; Nr. 4, no. 8 (2011-08-26), S.1637-1661 |
| Datensatznummer |
250002081
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| Publikation (Nr.) |
 copernicus.org/amt-4-1637-2011.pdf |
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| Zusammenfassung |
| This paper presents observing system simulation experiments (OSSEs) to
compare the relative capabilities of two geostationary thermal infrared (TIR)
instruments to measure ozone (O3) and carbon monoxide (CO) for
monitoring air quality (AQ) over Europe. The primary motivation of this study
is to use OSSEs to assess how these infrared instruments can constrain
different errors affecting AQ hindcasts and forecasts (emissions,
meteorology, initial condition and the 3 parameters together). The first
instrument (GEO-TIR) has a configuration optimized to monitor O3 and CO
in the lowermost troposphere (LmT; defined to be the atmosphere between the
surface and 3 km), and the second instrument (GEO-TIR2) is designed to
monitor temperature and humidity. Both instruments measure radiances in the
same spectral TIR band. Results show that GEO-TIR could have a significant
impact (GEO-TIR is closer to the reference atmosphere than GEO-TIR2) on the
analyses of O3 and CO LmT column. The information added by the
measurements for both instruments is mainly over the Mediterranean Basin and
some impact can be found over the Atlantic Ocean and Northern Europe. The
impact of GEO-TIR is mainly above 1 km for O3 and CO but can also
improve the surface analyses for CO. The analyses of GEO-TIR2 show low impact
for O3 LmT column but a significant impact (although still lower than
for GEO-TIR) for CO above 1 km. The results of this study indicate the
beneficial impact from an infrared instrument (GEO-TIR) with a capability for
monitoring O3 and CO concentrations in the LmT, and quantify the value
of this information for constraining AQ models. |
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