August 2023 Newsletter

August 17, 2023

New GO-SHIP samples have arrived
NOSAMS was founded in part to spearhead the analysis of Δ¹⁴C dissolved inorganic carbon (DIC) from repeat hydrography cruises. The data are deposited into the publicly accessible database CCHDO (CLIVAR and Carbon Hydrographic Data Office). Samples have just arrived from the recently completed Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) line A16N, the third complete occupation of this transect.

MICADAS Gas Interface Analyses Now Routine
We are pleased to announce that we are now routinely analyzing carbonate and ready-to-burn organic carbon samples by our MICADAS Gas Interface System. The benefits are shorter turnaround times and lower costs. The analysis is not suitable for all projects as the analytical precision is larger than by our traditional graphite analyses. See our website for further details.

Postdoctoral Fellowship in Oceanic Radiocarbon
NOSAMS is advertising for a postdoctoral fellow interested in studies of radiocarbon in oceanic systems and / or developments in accelerator mass spectrometry and related techniques. Further details and application instructions can be found here and applications are due October 15.

Highlights from the Recent Literature
White, M.E. et al., 2023, Refractory Dissolved Organic Matter has Similar Chemical Characteristics but Different Radiocarbon Signatures with Depth in the Marine Water Column. Global Biogeochemical Cycles. DOI: 10.1029/2022GB007603

Faulkner, K.E., et al., 2023, Modeling the dynamic penetration depth of post-1950s water in unconfined aquifers using environmental tracers: Central Valley, California. Journal of Hydrology. DOI:

Liu, J. et al., 2023, Pre-aged terrigenous organic carbon biases ocean ventilation-age reconstructions in the North Atlantic. Nature Communications. DOI: 10.1038/s41467-023-39490-6

A full bibliography of publications utilizing NOSAMS analyses can be found here.

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