New GO-SHIP samples arrived from tropical North Pacific
New GO-SHIP samples arrived from tropical North Pacific
A new batch of seawater samples has arrived at NOSAMS from the recently completed Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) expedition along the P04E transect in the tropical North Pacific.
NOSAMS was founded in part to spearhead the analysis of Δ14C dissolved inorganic carbon (DIC) from repeat hydrography cruises. The data, archived in the publicly accessible CLIVAR and Carbon Hydrographic Data Office database (CCHDO) have become an invaluable resource for tracking circulation, ventilation, and changes in the global carbon cycle over time.
The P04E line was last occupied in 1989. Revisiting this transect more than three decades later provides an opportunity to compare radiocarbon distributions across a full generation of ocean change, offering new insights into how the tropical North Pacific has evolved since the late 20th century.
We look forward to adding these new measurements to the long-term GO-SHIP record and continuing to support the global oceanographic community with high quality radiocarbon data.
Highlights from the Recent Literature
Catena, S., Rossi, V., Cacciari, M., Vecchi, A., Marchesini, M., Marvelli, S., Giuliani, S., Bellucci, L., Pellegrini, C., & Amorosi, A. (2026). A 10,000-year record of environmental change and human forcing in the Po Delta (northern Italy). Palaeogeography, Palaeoclimatology, Palaeoecology, 699, 113992. https://doi.org/10.1016/j.palaeo.2026.113992
Connolly, C.T., Spencer, R.G.M., and McClelland, J.W. (2026) Elucidating the Reactivity and Fate of Dissolved Organic Matter in Groundwater Entering the Alaska Beaufort Sea Coast using 14C Ramped Oxidation. Geophys. Res. Lett. 53: e2025GL121357. https://doi.org/10.1029/2025GL121357
Kim, D., Kim, J.-H., Kang, S., Bong, Y.-S., & Shin, K.-H. (2026). Significant contribution of petrogenic organic carbon to suspended particulate organic carbon in the Beaufort Sea. Limnology and Oceanography, 71(7), e70455. https://doi.org/10.1002/lno.70455
Lee, S.-C., Lee, G.-H., Koh, H., Lee, E.-J., Yu, B.-Y., Hur, J., Kim, S., Shin, K.-H., & Oh, N.-H. (2026). Oxidation method affects radiocarbon analysis of natural solid samples: Implications for elemental analyzer vs. closed tube combustion. Marine Pollution Bulletin, 233, 120160. https://doi.org/10.1016/j.marpolbul.2026.120160
McKeon, K., Donnelly, J. P., Piecuch, C. G., Maio, C. V., Hawkes, A. D., Barnett, L. L., Bigelow, N., Blanco, C. L., Bogardus, R., Hatfield, V., LaClair, C., McDonald, K., Nissen, G., Oleyer, P., Patterson, A., Sanborn, L., Starr, M., & Winkler, T. (2026). North Pacific Extreme Storms Reconstructed With a Novel Approach to Estimating Storm Frequency and Uncertainty. Paleoceanography and Paleoclimatology, 41(7), e2025PA005387. https://doi.org/10.1029/2025PA005387
Min, J.-O., Lee, B., Shim, C., Ko, Y. W., Kim, S.-H., Kang, S., Park, J., & Ha, S.-Y. (2026). Anthropogenic Black Carbon Signatures in Antarctic Fjords: Implications for Carbon Cycling. Environmental Science & Technology, 60(26), 18684–18695. https://doi.org/10.1021/acs.est.6c05186
Xu, L., Gagnon, A., Roberts, M., Hansman, R.L., Elder, K.L., Seewald, J.S., Harris, R., Lang, S.Q. (2026) A simple and effective method to remove hydrogen sulfide from fluid and gas samples prior to radiocarbon analysis of CO2 gas and dissolved inorganic carbon. Radiocarbon. https://doi.org/10.1017/RDC.2026.10218
A full bibliography of publications utilizing NOSAMS analyses can be found here.
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