Comparison of in-situ water vapour isotope analysers

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dc.contributor.authorElement, Aen_AU
dc.contributor.authorParkes, SDen_AU
dc.contributor.authorGriffith, DWTen_AU
dc.contributor.authorWang, Len_AU
dc.contributor.authorMcCabe, MFen_AU
dc.date.accessioned2020-06-11T06:54:35Zen_AU
dc.date.available2020-06-11T06:54:35Zen_AU
dc.date.issued2011-12-05en_AU
dc.date.statistics2020-05-15en_AU
dc.description.abstractRecently there have been a number of spectroscopic based in-situ water vapour isotope analysers developed. These analysers are capable of providing datasets that are useful for a range studies including interpreting rapid fluctuations associated with land atmosphere exchange processes, and validation of process based models that work on different spatial and temporal scales. Here we present a comparison of three spectroscopic analysers that provide in-situ analysis of water vapour isotopes. These include a Fourier Transform InfraRed (FTIR) spectroscopy based system (broad band technique), a system based on Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS), and a Wavelength-Scanned Cavity Ring-Down Spectroscopy (WS-CRDS) system. Using a continuous flow calibration system, liquid isotopic standards were vaporised and used to determine the response of the three analysers to changes isotopic composition and the water vapour mixing ratio. Based on these experiments it was shown that all three analysers required significant corrections to move the raw data onto the Standard Mean Ocean Water (SMOW) scale. We then deployed the three analysers at a coastal location near Sydney, Australia where diurnal temperature variations are relatively small and high mixing ratios are generally observed. The WS-CRDS and OA-ICOS were then deployed in central NSW, Australia where large diurnal temperature variations and relatively low mixing ratios were observed. The in-situ isotope data collected from the three analysers is then compared between these two locations.en_AU
dc.identifier.citationElement, A., Parkes, S. D., Griffith, D. W., Wang. L., McCabe, M. F. (2011). Comparison of in-situ water vapour isotope analysers. Paper present at the AGU Fall Meeting, December 5-9, 2011, San Francisco.en_AU
dc.identifier.conferenceenddate9 December 2011en_AU
dc.identifier.conferencenameAGU Fall Meetingen_AU
dc.identifier.conferenceplaceSan Francisco, Californiaen_AU
dc.identifier.conferencestartdate5 December 2011en_AU
dc.identifier.govdoc9495en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9591en_AU
dc.language.isoenen_AU
dc.publisherAmerican Geophysical Unionen_AU
dc.relation.ispartofseriesB31E-0363en_AU
dc.subjectWater vaporen_AU
dc.subjectIsotope ratioen_AU
dc.subjectDatasetsen_AU
dc.subjectFluctuationsen_AU
dc.subjectAtmospheresen_AU
dc.subjectFourier transformationen_AU
dc.subjectWavelengthsen_AU
dc.titleComparison of in-situ water vapour isotope analysersen_AU
dc.typeConference Abstracten_AU
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