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| Titel |
The added value of a visible channel to a geostationary thermal infrared instrument to monitor ozone for air quality |
| VerfasserIn |
E. Hache, J.-L. Attié, C. Tourneur, P. Ricaud, L. Coret, W. A. Lahoz, L. El Amraoui, B. Josse, P. Hamer, J. Warner, X. Liu, K. Chance, M. Höpfner, R. Spurr, V. Natraj, S. Kulawik, A. Eldering, J. Orphal |
| 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 ; 7, no. 7 ; Nr. 7, no. 7 (2014-07-22), S.2185-2201 |
| Datensatznummer |
250115852
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| Publikation (Nr.) |
 copernicus.org/amt-7-2185-2014.pdf |
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| Zusammenfassung |
| Ozone is a tropospheric pollutant and plays a key role in
determining the air quality that affects human wellbeing. In this
study, we compare the capability of two hypothetical grating
spectrometers onboard a geostationary (GEO) satellite to sense ozone
in the lowermost troposphere (surface and the 0–1 km
column). We consider 1 week during the Northern Hemisphere summer
simulated by a chemical transport model, and use the two GEO
instrument configurations to measure ozone concentration (1) in the
thermal infrared (GEO TIR) and (2) in the thermal infrared and the
visible (GEO TIR+VIS). These configurations are compared against
each other, and also against an ozone reference state and a priori
ozone information. In a first approximation, we assume clear sky
conditions neglecting the influence of aerosols and clouds. A number
of statistical tests are used to assess the performance of the two
GEO configurations. We consider land and sea pixels and whether
differences between the two in the performance are
significant. Results show that the GEO TIR+VIS configuration
provides a better representation of the ozone field both for surface
ozone and the 0–1 km ozone column during the daytime
especially over land. |
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