Dataset: Elemental and isotopic noble gas ratios from the Bermuda Atlantic Time-series (BATS) on cruise 10391 on R/V Atlantic Explorer (AE2208) from 30 April 2022 to 05 May 2022

ValidatedFinal no updates expectedDOI: 10.26008/1912/bco-dmo.890342.1Version 1 (2023-02-22)Dataset Type:Cruise Results

Principal Investigator: Alan M. Seltzer (Woods Hole Oceanographic Institution)

Co-Principal Investigator: Peter Barry (Woods Hole Oceanographic Institution)

Co-Principal Investigator: William J. Jenkins (Woods Hole Oceanographic Institution)

Co-Principal Investigator: Samar Khatiwala (University of Oxford)

Co-Principal Investigator: David P. Nicholson (Woods Hole Oceanographic Institution)

Co-Principal Investigator: William M. Smethie Jr. (Lamont-Doherty Earth Observatory)

Co-Principal Investigator: Rachel Stanley (Wellesley College)

Co-Principal Investigator: Martin Stute (Lamont-Doherty Earth Observatory)

BCO-DMO Data Manager: Shannon Rauch (Woods Hole Oceanographic Institution)


Project: Collaborative Research: Probing the Ventilation Efficiency of the Deep Ocean with Conservative Dissolved Gas Tracers in Archived Samples (TTO NGs and O2)

Project: Collaborative Research: Novel constraints on air-sea gas exchange and deep ocean ventilation from high-precision noble gas isotope measurements in seawater (HPNGI)


Abstract

This dataset includes new observations of heavy noble gas ratios (elemental and isotopic ratios) from the Bermuda Atlantic Time-series (BATS) on cruise 10391 on R/V Atlantic Explorer (AE2208) from 30 April 2022 - 05 May 2022. These data were used, along with measurements of Kr/Ar and N2/Ar ratios in stored dissolved gas samples from the Transient Tracers in the Ocean (TTO) program, to model simulations of these tracers using the Transport Matrix Method (TMM). Together these new measurements a...

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Note: all methods are described in detail in the accompanying publication currently in final review at Proceedings of the National Academy of Sciences.

Samples were collected in the field at the Bermuda Atlantic Time-series (BATS) on cruise 10391 on R/V Atlantic Explorer (AE2208) from 30 April 2022 - 05 May 2022. Samples were collected at the BATS site located at 31°50'N, 64°10'W. Samples were collected in evacuated 6-liter (L) stainless steel canisters by subsampling from 12-L Niskin bottles, filling each to ~3.5 L.

Noble gas isotopes and elemental ratios were measured in the Seltzer Lab at Woods Hole Oceanographic Institution following the methods described in Seltzer and Bekaert (2022). In the lab, samples were equilibrated on a shaking table at constant temperature before being drained, leaving a headspace that was chemically gettered to remove all reactive gases. The purified sample was analyzed on a dual-inlet mass spectrometer in the Seltzer Lab for stable Argon, Krypton, and Xenon (Ar, Kr, and Xe) isotope ratios as well as Kr/Ar and Xe/Ar ratios. All samples (n=27) were analyzed between 13 May and 10 June 2022 and air standards were analyzed weekly throughout this period.

The model simulations are available as a related dataset at BCO-DMO. See: https://www.bco-dmo.org/dataset/890293


Related Datasets

IsSourceOf

Dataset: Elemental and isotopic noble gas ratios and N2/Ar from the North Atlantic: model simulations
Relationship Description: The BATS data in dataset 890342 were used in the development of the model in dataset 890293.
Seltzer, A. M., Barry, P., Jenkins, W. J., Khatiwala, S., Nicholson, D. P., Smethie Jr., W. M., Stanley, R., Stute, M. (2023) Model simulations of elemental and isotopic heavy noble gas ratios using the Transport Matrix Method (TMM). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-02-21 doi:10.26008/1912/bco-dmo.890293.1

Related Publications

Results

Seltzer, A. M., Nicholson, D. P., Smethie, W. M., Tyne, R. L., Le Roy, E., Stanley, R. H. R., Stute, M., Barry, P. H., McPaul, K., Davidson, P. W., Chang, B. X., Rafter, P. A., Lethaby, P., Johnson, R. J., Khatiwala, S., & Jenkins, W. J. (2023). Dissolved gases in the deep North Atlantic track ocean ventilation processes. Proceedings of the National Academy of Sciences, 120(11). https://doi.org/10.1073/pnas.2217946120
Methods

Ng, J., Tyne, R., Seltzer, A., Noyes, C., McIntosh, J., & Severinghaus, J. (2023). A new large‐volume equilibration method for high‐precision measurements of dissolved noble gas stable isotopes. Rapid Communications in Mass Spectrometry, 37(7). Portico. https://doi.org/10.1002/rcm.9471
Methods

Seltzer, A. M., & Bekaert, D. V. (2022). A unified method for measuring noble gas isotope ratios in air, water, and volcanic gases via dynamic mass spectrometry. International Journal of Mass Spectrometry, 478, 116873. https://doi.org/10.1016/j.ijms.2022.116873