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| Titel |
Validation of GOME total ozone by means of the Norwegian ozone monitoring network |
| VerfasserIn |
G. Hansen, A. Dahlback, F. Tønnessen, T. Svenøe |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 17, no. 3 ; Nr. 17, no. 3, S.430-436 |
| Datensatznummer |
250013697
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| Publikation (Nr.) |
 copernicus.org/angeo-17-430-1999.pdf |
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| Zusammenfassung |
The Global Ozone Monitoring Experiment (GOME)
onboard the ERS-2 satellite has been in operation since July 1995. The Norwegian
ground-based total ozone network has played an important role both in the main
validation during the commissioning phase and in the validation of upgraded
versions of the analysis algorithms of the instrument. The ground-based network
consists of various spectrometer types (Dobson, Brewer, UV filter instruments).
The validation of the second algorithm version used until January 1998 reveals a
very good agreement between GOME and ground-based data at solar zenith angles
<60° and deviations of GOME total ozone data from ground-based data of up to
±60 DU (~20%) at zenith angles >60°. The deviations strongly depend on the
season of the year, being negative in summer and positive in winter/spring, The
deviations furthermore show a considerable scattering (up to ±25 DU in monthly
average values of 5° SZA intervals), even in close spatial and temporal
coincidence with ground-based measurements, especially in the high Arctic. The
deviations are also dependent on the viewing geometry/ground pixel size with an
additional negative offset for the large pixels used in the backswath mode and
at solar zenith angles >85°, compared to forward-swath pixels.
Key words. Atmospheric composition and structure
(middle atmosphere · composition and chemistry; instruments and techniques) |
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