Development of an AMS method to study oceanic circulation characteristics using cosmogenic 39Ar

Collon, P.; Bichler, Mathias; Caggiano, J. A.; Cecil, L. DeWayne; Masri, Y. El; Golser, Robin; Jiang, C. L.; Heinz, A.; Henderson, D. J.; Kutschera, W.; Lehmann, B.; Leleux, P.; Loosli, H.H.; Pardo, R. C.; Paul, M.; Rehm, K. E.; Schlosser, Peter; Scott, Robert H.; Smethie, William M.; Vondrasek, R.

doi:10.1016/j.nimb.2004.04.081

Cited by 41 publications

(17 citation statements)

References 6 publications

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“…Nevertheless, for the large-scale ocean, 14 C remains one of our best tracers for assessing turnover rates of water masses in the ocean (see Schlitzer, 2007). Another, in principle powerful, age oceanic tracer is the noble gas isotope 39 Ar. Its shorter half-life of 269 years (Stoenner et al, 1965) would even be more suitable to resolve upper ocean gradients for validation of ocean ventilation timescales in models .…”

Section: The Key Process For Anthropogenic Carbon Uptakementioning

confidence: 99%

“…Its shorter half-life of 269 years (Stoenner et al, 1965) would even be more suitable to resolve upper ocean gradients for validation of ocean ventilation timescales in models . New measurement techniques allowing for small sample size may enable building a larger 39 Ar database for the ocean (Collon et al, 2004).…”

Section: The Key Process For Anthropogenic Carbon Uptakementioning

confidence: 99%

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The ocean carbon sink – impacts, vulnerabilities and challenges

et al. 2015

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Abstract. Carbon dioxide (CO 2 ) is, next to water vapour, considered to be the most important natural greenhouse gas on Earth. Rapidly rising atmospheric CO 2 concentrations caused by human actions such as fossil fuel burning, land-use change or cement production over the past 250 years have given cause for concern that changes in Earth's climate system may progress at a much faster pace and larger extent than during the past 20 000 years. Investigating global carbon cycle pathways and finding suitable adaptation and mitigation strategies has, therefore, become of major concern in many research fields. The oceans have a key role in regulating atmospheric CO 2 concentrations and currently take up about 25 % of annual anthropogenic carbon emissions to the atmosphere. Questions that yet need to be answered are what the carbon uptake kinetics of the oceans will be in the future and how the increase in oceanic carbon inventory will affect its ecosystems and their services. This requires comprehensive investigations, including high-quality ocean carbon measurements on different spatial and temporal scales, the management of data in sophisticated databases, the application of Earth system models to provide future projections for given emission scenarios as well as a global synthesis and outreach to policy makers. In this paper, the current understanding of the ocean as an important carbon sink is reviewed with respect to these topics. Emphasis is placed on the complex interplay of different physical, chemical and biological processes that yield both positive and negative air-sea flux values for natural and anthropogenic CO 2 as well as on increased CO 2 (uptake) as the regulating force of the radiative warming of the atmosphere and the gradual acidification of the oceans. Major future ocean carbon challenges in the fields of ocean observations, modelling and process research as well as the relevance of other biogeochemical cycles and greenhouse gases are discussed.Published by Copernicus Publications on behalf of the European Geosciences Union.

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Section: The Key Process For Anthropogenic Carbon Uptakementioning

confidence: 99%

Section: The Key Process For Anthropogenic Carbon Uptakementioning

confidence: 99%

The ocean carbon sink – impacts, vulnerabilities and challenges

et al. 2015

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“…see Ref. [12]. A disadvantage of using a quartz liner is that source performance, as measured by charge-state distribution and maximum beam intensity, is somewhat reduced.…”

Section: Small Sample Size and Cross-talkmentioning

confidence: 99%

“…Laser ablation into an ECR source was first developed at ATLAS [10,12] and used as a plasma diagnostic tool [13] and has since been used by a number of other labs to explore the coupling of laser produced ions into an ECR source. The technique has not been used routinely for ion production and will require development for this application.…”

Section: Laser Parameters and Multisample Changer For Sourcementioning

confidence: 99%

Toward laser ablation Accelerator Mass Spectrometry of actinides

Pardo

Kondev

Kondrashev

et al. 2013

Nuclear Instruments and Methods in Physics Research Section B:

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“…A number of experiments have demonstrated [1][2][3][4] the usefulness of electron cyclotron resonance (ECR) ion sources in forms of mass spectrometry. These efforts have focused on techniques for the detection of rare long-lived radioisotopes and trace element analysis.…”

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confidence: 99%

Use of multiply charged atomic ions for isotope ratio mass spectrometry

Hotchkis

Button

Waring

2008

Rapid Comm Mass Spectrometry

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We have investigated the use of multiply charged atomic ions for the measurement of isotopic ratios of gaseous and vapour samples. We use a mass spectrometer system incorporating an electron cyclotron resonance (ECR) ion source for this purpose. In the cases of carbon, nitrogen and oxygen, the selection of the 2+ atomic species is found to be the most effective for obtaining reliable isotopic ratios. Using samples of carbon dioxide, nitrogen, air and water vapour, we have demonstrated the determination of the isotopic ratios 13C/12C, 15N/14N, 17 O/16 O and 18 O/16 O. For oxygen, this technique offers an alternative to the equilibration or purification methods normally required to obtain isotopic ratios of water or other oxygen-containing samples. In particular, 17 O/16 O can be measured directly without isobaric interference from OH+. With typical ionization efficiencies of greater than 10%, ECR ion sources have the potential to enable measurements on very small samples. In addition to those evaluated in the present work, there is scope for application of this method to other sample types, to a variety of sampling methods, and to other elements.

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Development of an AMS method to study oceanic circulation characteristics using cosmogenic 39Ar

Cited by 41 publications

References 6 publications

The ocean carbon sink – impacts, vulnerabilities and challenges

The ocean carbon sink – impacts, vulnerabilities and challenges

Toward laser ablation Accelerator Mass Spectrometry of actinides

Use of multiply charged atomic ions for isotope ratio mass spectrometry

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