Observations of molecular hydrogen mixing ratio and stable isotopic composition at the Cabauw tall tower in the Netherlands

Batenburg, A. M.; Popa, M. E.; Vermeulen, Alex; Bulk, W.C.M. van den; Jongejan, P. A. C.; Fisher, Rebecca E.; Lowry, David; Nisbet, E. G.; Röckmann, Thomas

doi:10.1016/j.atmosenv.2016.09.058

Atmospheric Environment

2016

DOI: 10.1016/j.atmosenv.2016.09.058

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Observations of molecular hydrogen mixing ratio and stable isotopic composition at the Cabauw tall tower in the Netherlands

A. M. Batenburg

M. E. Popa

Alex Vermeulen

et al.

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2019

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Cited by 2 publications

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“…Recently, it became possible to analyze the D content of H 2 (δD) in small atmospheric samples at natural isotopic abundances. 19,20 These measurements enabled the study of different components of the H 2 cycle [21][22][23][24] and helped constrain the atmospheric H 2 budget, which as a consequence is currently relatively well understood on the large scale. 6,25,26 Although H 2 isotope measurements have proven useful, they are difficult to perform, and only few labs had or have this capability.…”

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H₂ clumped isotope measurements at natural isotopic abundances

Popa

Paul

Janssen

et al. 2019

Rapid Comm Mass Spectrometry

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Rationale Molecular hydrogen (H 2 ) is an important gas for atmospheric chemistry, and an indirect greenhouse gas due to its reaction with OH. The isotopic composition of H 2 (δD) has been used to investigate its atmospheric budget; here we add a new observable, the clumped isotopic signature ΔDD, to the tools that can be used to study the global cycle of H 2 . Methods A method for determining ΔDD in H 2 was developed using the high‐resolution MAT 253‐Ultra isotope ratio mass spectrometer (Thermo Fisher). The HH, HD and DD abundances are quantified at medium resolution (M/ΔM ≈ 6000), which is sufficient for HD + and DD + to be distinguished from H 3 + and H 2 D + , respectively. The method involves sequential measurement of isotopologues, and DD is measured using an ion counter. For verification, catalytic ΔDD equilibration experiments were performed at temperatures of up to 850°C. Results The typical precision obtained for ΔDD is 2–6‰, close to the theoretical counting statistics limit, and adequate for detecting the expected natural variations. Compatibility and medium‐term reproducibility are consistent with the precision values. The method was validated using temperature equilibration experiments, which showed a dependence of ΔDD on temperature as expected form theoretical calculations. Conclusions We have established a method for determining ΔDD in H 2 at natural isotopic abundances, with a precision that is adequate for observing the expected variations in atmospheric and other natural H 2 . This method opens the road to new research on the natural H 2 cycle.

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confidence: 99%

H₂ clumped isotope measurements at natural isotopic abundances

Popa

Paul

Janssen

et al. 2019

Rapid Comm Mass Spectrometry

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A 24-year record of high-frequency, in situ, observations of hydrogen at the Atmospheric Research Station at Mace Head, Ireland

Derwent¹,

Simmonds

O’Doherty

et al. 2019

Atmospheric Environment

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A flexible approach for quantifying average long-term changes and seasonal cycles has been applied to the baseline mixing ratios of thirty-two trace gases monitored at the Atmospheric Research Station located at Mace Head, Ireland on the Atlantic Ocean coastline of Europe.Almost all these trace gases exhibit minima in their baseline seasonal cycles during a twomonth period from mid-July to the end of September and maxima during a six-month period between November and May. Relative seasonal cycle amplitudes are largest for those trace gases with the shortest atmospheric lifetimes and smallest for the longest. Robust 2 relationships were found between the timings of the seasonal maxima and minima and their relative amplitudes with the atmospheric lifetimes of the trace gases. These relationships provide a basis for understanding the reasons that the seasonal cycles of a few species (that is, H2, CCl4 and the longest-lived gases) deviate significantly; they also have excellent potential as tools to assess global chemistry-transport model performance.

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Observations of molecular hydrogen mixing ratio and stable isotopic composition at the Cabauw tall tower in the Netherlands

Cited by 2 publications

References 57 publications

H₂ clumped isotope measurements at natural isotopic abundances

H₂ clumped isotope measurements at natural isotopic abundances

A 24-year record of high-frequency, in situ, observations of hydrogen at the Atmospheric Research Station at Mace Head, Ireland

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Observations of molecular hydrogen mixing ratio and stable isotopic composition at the Cabauw tall tower in the Netherlands

Cited by 2 publications

References 57 publications

H2 clumped isotope measurements at natural isotopic abundances

H2 clumped isotope measurements at natural isotopic abundances

A 24-year record of high-frequency, in situ, observations of hydrogen at the Atmospheric Research Station at Mace Head, Ireland

Contact Info

Product

Resources

About

H₂ clumped isotope measurements at natural isotopic abundances

H₂ clumped isotope measurements at natural isotopic abundances