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| Titel |
New retrieval algorithm for the HDO/H2O ratio from SCIAMACHY measurements |
| VerfasserIn |
Katja Weigel, Max Reuter, Oliver Schneising, Stefan Noël, John P. Burrows |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250072348
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| Zusammenfassung |
| Water vapor isotope ratios are important as temperature proxies and provide information
about the hydrological cycle. Global satellite measurements of the HDO/H2O ratio (δD) can
improve our understanding of the corresponding processes and are also valuable to
asses the quality of models. Measurements from the SCanning Imaging Absorption
spectroMeter for Atmospheric CHartographY (SCIAMACHY) on-board Envisat allow to
retrieve δD using nadir measurements in the shortwave-infrared wavelength region.
Measurements in this wavelength range are sensitive down to the earth surface. The
BESD (Bremen Optimal Estimation differential optical absorption spectroscopy
(DOAS)) retrieval algorithm developed for CO2 was adopted to retrieve δD using a
micro-window ranging from 2354.23 nm to 2374.25 nm. Measurements are available
from 2002 to 2012 but this wavelength range is effected by several instrumental
issues. Here, we present results of the δD retrieval and investigate the possible length
of the time series. The quality and stability of the retrieved data set is assessed. |
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