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| Titel |
HDO measurements with MIPAS |
| VerfasserIn |
J. Steinwagner, M. Milz, T. Clarmann, N. Glatthor, U. Grabowski, M. Höpfner, G. P. Stiller, T. Röckmann |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 7, no. 10 ; Nr. 7, no. 10 (2007-05-16), S.2601-2615 |
| Datensatznummer |
250004990
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| Publikation (Nr.) |
 copernicus.org/acp-7-2601-2007.pdf |
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| Zusammenfassung |
| We have used high spectral resolution spectroscopic measurements
from the MIPAS instrument on the Envisat satellite to simultaneously
retrieve vertical profiles of H2O and HDO in the
stratosphere and uppermost troposphere. Variations in the deuterium
content of water are expressed in the common δ notation,
where δD is the deviation of the Deuterium/Hydrogen
ratio in a sample from a standard isotope ratio. A thorough error
analysis of the retrievals confirms that reliable δD
data can be obtained up to an altitude of ~45 km. Averaging over
multiple orbits and thus over longitudes further reduces the random
part of the error. The absolute total error of averaged
δD is between 36‰ and 111‰. With values
lower than 42‰ the total random error is significantly
smaller than the natural variability of δD. The data
compare well with previous investigations. The MIPAS measurements
now provide a unique global data set of high-quality
δD data that will provide novel insight into the
stratospheric water cycle. |
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