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| Titel |
Analysis of high resolution isotopic signatures of CO2 at the high altitude site Jungfraujoch in the period 2008-2016 |
| VerfasserIn |
Michael Müller, Béla Tuzson, Lukas Emmenegger |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250148026
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| Publikation (Nr.) |
 EGU/EGU2017-12251.pdf |
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| Zusammenfassung |
| A quantum cascade laser absorption spectrometer for measuring CO2 and the isotopic
ratios δ13C and δ18O has continuously been operated at the High Altitude Research
Station Jungfraujoch (3580 m a.s.l.) since 2008. The measurement precision is
about 0.02 ‰ for both isotope ratios for an averaging time of 10 min, while the
accuracy was estimated to be 0.1 ‰ including the uncertainty of the calibration gases
[1].
The isotope time series at Jungfraujoch has been extended by four years since the latest
data evaluation [1] and currently spans almost eight years. We present first results of the time
series analysis focusing on trends, year to year variations and the relation of the
CO2 concentrations to other trace gases measured at Jungfraujoch (e.g. CO). These
investigations will be the basis for further analyses utilizing tools such as dispersion
modelling.
References
[1] P. Sturm et al., 2013. Tracking isotopic signatures of CO2 at the high altitude site
Jungfraujoch with laser spectroscopy: analytical improvements and representative results.
Atmos. Meas. Tech., 6, 1659–1671. doi: 10.5194/amt-6-1659-2013. |
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