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| Titel |
Retrieval of Stratospheric CH4 Profiles from SCIAMACHY Solar Occultation Measurements using a DOAS approach |
| VerfasserIn |
Stefan Noël, Klaus Bramstedt, Alexei Rozanov, Heinrich Bovensmann, John P. Burrows |
| Konferenz |
EGU General Assembly 2011
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 13 (2011) |
| Datensatznummer |
250047975
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| Zusammenfassung |
| Stratospheric methane (CH4) profiles have been derived from solar occultation measurements
of the SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY
(SCIAMACHY) on ENVISAT. The SCIAMACHY solar occultation measurements cover the
latitudinal range between about 50-N and 70-N. The retrieval method is based
on a combination of an onion peeling approach with a weighting function DOAS
(Differential Optical Absorption Spectroscopy) fit. This is an extension of the "Onion
Peeling DOAS" method which has already been successfully applied to e.g. water
vapour.
Here, we will present first retrieval results for methane using the optimised
method and compare them with correlative data (e.g. ACE–FTS measurements).
Furthermore, time series of stratospheric methane profiles (based on about 8 years of
SCIAMACHY solar occultation data) will be presented, showing the capability of
SCIAMACHY solar occultation measurements in the context of greenhouse gas
monitoring. |
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