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| Titel |
Comparison of ozone retrievals from the Pandora spectrometer system and Dobson spectrophotometer in Boulder, Colorado |
| VerfasserIn |
J. Herman, R. Evans, A. Cede, N. Abuhassan, I. Petropavlovskikh, G. McConville |
| 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 ; 8, no. 8 ; Nr. 8, no. 8 (2015-08-24), S.3407-3418 |
| Datensatznummer |
250116539
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| Publikation (Nr.) |
 copernicus.org/amt-8-3407-2015.pdf |
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| Zusammenfassung |
| A comparison of retrieved total column ozone (TCO) amounts between the Pandora
#34 spectrometer system and the Dobson #061 spectrophotometer from
direct-sun observations was performed on the roof of the Boulder, Colorado,
NOAA building. This paper, part of an ongoing study, covers a 1-year
period starting on 17 December 2013. Both the standard Dobson and Pandora
TCO retrievals required a correction, TCOcorr = TCO
(1 + C(T)), using a monthly varying effective ozone temperature,
TE,
derived from a temperature and ozone profile climatology. The correction is
used to remove a seasonal difference caused by using a fixed temperature in
each retrieval algorithm. The respective corrections C(TE) are
CPandora = 0.00333(TE-225) and CDobson
= -0.0013(TE-226.7) per degree K. After the applied corrections removed
most of the seasonal retrieval dependence on ozone temperature, TCO
agreement between the instruments was within 1 % for clear-sky conditions.
For clear-sky observations, both co-located instruments tracked the
day-to-day variation in total column ozone amounts with a correlation of
r2 = 0.97 and an average offset of 1.1 ± 5.8 DU. In addition,
the Pandora TCO data showed 0.3 % annual average agreement with satellite
overpass data from AURA/OMI (Ozone Monitoring Instrument) and 1 % annual
average offset with Suomi-NPP/OMPS (Suomi National Polar-orbiting
Partnership, the nadir viewing portion of the Ozone Mapper Profiler Suite). |
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