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Multinational Effort in the Search for a Global Solution for the Production and Certification of Reference Materials for Measurements of the Seawater Carbonate System

Wednesday, 31 May 2023 @ 13:00 UTC

Maribel I. García-Ibáñez

Postdoc, Institut de Ciències del Mar (ICM), CSIC

Regina Easley

Research Chemist, National Institute of Standards and Technology (NIST)

Artur P. Palacz

IOCCP Project Officer, Institute of Oceanology Polish Academy of Sciences

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High-quality measurements of the seawater carbonate system allow us to quantify and understand the oceanic uptake of atmospheric carbon dioxide (CO2) and monitor ocean acidification. Those seawater carbonate system measurements rely on the availability of reference materials (RMs). The COVID-19 pandemic highlighted the fragility of the production system of the seawater RMs for the carbonate system, currently depending on one single laboratory. With that in mind, a new model for seawater RMs for the carbonate system, centered on regional hubs, is being discussed to create a more resilient system. The proposed new model for seawater RMs for the carbonate system requires unprecedented involvement of National Metrology Institutes (NMIs) on a global level. The integration of the new model into the global metrology landscape will help to produce the RMs that are comparable and metrologically traceable to the International System of Units.