Articles | Volume 10, issue 11
https://doi.org/10.5194/amt-10-4537-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/amt-10-4537-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
A new instrument for stable isotope measurements of 13C and 18O in CO2 – instrument performance and ecological application of the Delta Ray IRIS analyzer
University of Göttingen, Bioclimatology, Faculty of Forest Sciences and Forest Ecology, Göttingen, Germany
Yuan Yan
University of Göttingen, Bioclimatology, Faculty of Forest Sciences and Forest Ecology, Göttingen, Germany
Alexander Knohl
University of Göttingen, Bioclimatology, Faculty of Forest Sciences and Forest Ecology, Göttingen, Germany
University of Göttingen, Centre of Biodiversity and Sustainable Land Use (CBL),
Göttingen, Germany
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Cited
15 citations as recorded by crossref.
- Improving δ13C Measurement Accuracy of Off-Axis Integrated Cavity Output Spectroscopy with a Weighted Feedforward Neural Network Y. Liu et al. https://doi.org/10.1021/acs.analchem.6c00761
- Calibration of isotopologue-specific optical trace gas analysers: a practical guide D. Griffith https://doi.org/10.5194/amt-11-6189-2018
- A High-Accuracy CO2 Carbon Isotope Sensing System Using Subspace Identification of Hammerstein Model for Geochemical Application H. Piao et al. https://doi.org/10.1109/TIM.2021.3132913
- A modeling approach to investigate drivers, variability and uncertainties in O2 fluxes and O2 : CO2 exchange ratios in a temperate forest Y. Yan et al. https://doi.org/10.5194/bg-20-4087-2023
- An optimized sampling system for highly reproducible isotope ratio measurements (δ 13C and δ 18O) of pure CO2 gas by infrared spectroscopy J. Viallon et al. https://doi.org/10.1088/1681-7575/ab948c
- Combining a Quantum Cascade Laser Spectrometer with an Automated Closed-Chamber System for δ13C Measurements of Forest Soil, Tree Stem and Tree Root CO2 Fluxes A. Brændholt et al. https://doi.org/10.3390/f10050432
- IRIS analyser assessment reveals sub-hourly variability of isotope ratios in carbon dioxide at Baring Head, New Zealand's atmospheric observatory in the Southern Ocean P. Sperlich et al. https://doi.org/10.5194/amt-15-1631-2022
- The validity and reliability of a novel isotope ratio infrared spectrometer to quantify 13C enrichment of expired breath samples in exercise S. Sutehall et al. https://doi.org/10.1152/japplphysiol.00805.2020
- Bias correcting isotope-equipped GCMs outputs to build precipitation oxygen isoscape for eastern China P. Peng et al. https://doi.org/10.1016/j.jhydrol.2020.125153
- Stable Carbon and Oxygen Isotope Analysis of Carbonates and DIC Using the Delta Ray Isotope Ratio Infrared Spectrometer (IRIS): Precise and Accurate Measurements Applying a 3‐Point Calibration and Standard Bracketing M. Hansen et al. https://doi.org/10.1002/rcm.70021
- Assessing nitrous oxide (N2O) isotopic analyzer performance for in-field use J. Francis Clar & R. Anex https://doi.org/10.1016/j.agrformet.2022.108855
- Influence of dataset density on CO2 and CH4 trend calculation I. Pérez et al. https://doi.org/10.1007/s11869-019-00681-0
- Recommendations and Protocols for the Use of the Isotope Ratio Infrared Spectrometer (Delta Ray) to Measure Stable Isotopes from CO2: An Application to Volcanic Emissions at Mount Etna and Stromboli (Sicily, Italy) G. Boudoire et al. https://doi.org/10.1155/2020/4598190
- Evaluation of calibration strategies for accurate δ13CH4 measurements in dry and humid air J. Li et al. https://doi.org/10.5194/amt-19-1763-2026
- Simultaneous measurement of δ13C, δ18O and δ17O of atmospheric CO2 – performance assessment of a dual-laser absorption spectrometer P. Steur et al. https://doi.org/10.5194/amt-14-4279-2021
15 citations as recorded by crossref.
- Improving δ13C Measurement Accuracy of Off-Axis Integrated Cavity Output Spectroscopy with a Weighted Feedforward Neural Network Y. Liu et al. https://doi.org/10.1021/acs.analchem.6c00761
- Calibration of isotopologue-specific optical trace gas analysers: a practical guide D. Griffith https://doi.org/10.5194/amt-11-6189-2018
- A High-Accuracy CO2 Carbon Isotope Sensing System Using Subspace Identification of Hammerstein Model for Geochemical Application H. Piao et al. https://doi.org/10.1109/TIM.2021.3132913
- A modeling approach to investigate drivers, variability and uncertainties in O2 fluxes and O2 : CO2 exchange ratios in a temperate forest Y. Yan et al. https://doi.org/10.5194/bg-20-4087-2023
- An optimized sampling system for highly reproducible isotope ratio measurements (δ 13C and δ 18O) of pure CO2 gas by infrared spectroscopy J. Viallon et al. https://doi.org/10.1088/1681-7575/ab948c
- Combining a Quantum Cascade Laser Spectrometer with an Automated Closed-Chamber System for δ13C Measurements of Forest Soil, Tree Stem and Tree Root CO2 Fluxes A. Brændholt et al. https://doi.org/10.3390/f10050432
- IRIS analyser assessment reveals sub-hourly variability of isotope ratios in carbon dioxide at Baring Head, New Zealand's atmospheric observatory in the Southern Ocean P. Sperlich et al. https://doi.org/10.5194/amt-15-1631-2022
- The validity and reliability of a novel isotope ratio infrared spectrometer to quantify 13C enrichment of expired breath samples in exercise S. Sutehall et al. https://doi.org/10.1152/japplphysiol.00805.2020
- Bias correcting isotope-equipped GCMs outputs to build precipitation oxygen isoscape for eastern China P. Peng et al. https://doi.org/10.1016/j.jhydrol.2020.125153
- Stable Carbon and Oxygen Isotope Analysis of Carbonates and DIC Using the Delta Ray Isotope Ratio Infrared Spectrometer (IRIS): Precise and Accurate Measurements Applying a 3‐Point Calibration and Standard Bracketing M. Hansen et al. https://doi.org/10.1002/rcm.70021
- Assessing nitrous oxide (N2O) isotopic analyzer performance for in-field use J. Francis Clar & R. Anex https://doi.org/10.1016/j.agrformet.2022.108855
- Influence of dataset density on CO2 and CH4 trend calculation I. Pérez et al. https://doi.org/10.1007/s11869-019-00681-0
- Recommendations and Protocols for the Use of the Isotope Ratio Infrared Spectrometer (Delta Ray) to Measure Stable Isotopes from CO2: An Application to Volcanic Emissions at Mount Etna and Stromboli (Sicily, Italy) G. Boudoire et al. https://doi.org/10.1155/2020/4598190
- Evaluation of calibration strategies for accurate δ13CH4 measurements in dry and humid air J. Li et al. https://doi.org/10.5194/amt-19-1763-2026
- Simultaneous measurement of δ13C, δ18O and δ17O of atmospheric CO2 – performance assessment of a dual-laser absorption spectrometer P. Steur et al. https://doi.org/10.5194/amt-14-4279-2021
Saved (final revised paper)
Latest update: 11 Nov 2026
Short summary
Here we present the instrument characteristics and field applicability of
the newly developed Delta Ray analyzer for stable isotope measurements
in CO2. We used this analyzer to measure the concentration and the
isotopic composition of CO2 exchange in a managed beech forest for 3
months in autumn 2015. During this period an early frost event occurred
and our measurements suggest that this short event strongly influenced
the measured isotopic composition of CO2 exchange.
Here we present the instrument characteristics and field applicability of
the newly developed...
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