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| Titel |
Study Biosphere-Atmosphere Exchange With a Field Deployable Isotope Ratio Infrared Spectrometer For Simultaneous Measurements of Carbon And Oxygen Isotopologues of CO2 |
| VerfasserIn |
H. J. Jost, Eric Wapelhorst, Hans-Juergen Schlueter, Oliver Kracht, Jens Radke, Magda Mandic, Laura Gangi, Roland Bol, Nicolas Brueggemann, Charlotte Van Leeuwen, Huilin Chen, Harro Meijer |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250112156
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| Publikation (Nr.) |
 EGU/EGU2015-12312.pdf |
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| Zusammenfassung |
| Laser-based Isotope Ratio Infrared Spectrometers (IRIS) offer the potential
to perform precise, continuous, \textit{in-situ} monitoring of isotopologues of trace gases
at ambient concentration. We are presenting a middle-infrared laser-based
sensor platform that is capable of simultaneously determining both $\delta
^{18}$O and $\delta ^{13}$C isotope ratios of carbon dioxide.
Specifically, we access the fundamental bands of CO$_{2}$ at 4.2 microns
using a difference frequency generation (DFG) laser combined with a simple,
direct absorption approach that makes use of a robust multi pass cell and a
cryogen free setup.
We will present data from simulations of ambient measurements as well as
real world data collected in plant chambers and greenhouse gas monitoring
stations.
A simulation of ambient measurement conditions with a 75 ppm/hour change in
CO$_{2}$ concentration from 350-650 ppm showed a precision of
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