We are excited to invite you to attend the next Global Ocean Acidification Observing Network (GOA-ON) webinar organized jointly with IOCCP on "Multinational efforts in the search for a global solution for the production and certification of reference materials for measurements of the seawater carbonate system." The webinar will feature two presentations from Maribel I. García-Ibáñez (CSIC, Spain & IOCCP SSG member) and Regina Easley (NIST, USA), followed by a live discussion. The event will be moderated by Artur Palacz, IOCCP Project Officer. 

The webinar will be held on 31 May 2023, at 13:00 - 15:00 UTC. Please register in advance via the webinar website: https://unesco-org.zoom.us/webinar/register/WN_T5zropWYRh-Bzxktxgftrw#/registration Please see below for the webinar abstract and more information about the speakers.