Netherlands North Sea Ocean Acidification Monitoring Programme v2025.06

Monitoring programme of the Dutch Ministry of Infrastructure and Water Management to improve the understanding of dynamics and trends in ocean acidification parameters in the Dutch sector of the North Sea. This dataset (version 2025.06) contains all measurements from all batches of analysis up to and including June 2025 for which auxiliary variables (temperature, salinity and nutrients) were available from Rijkswaterstaat at the time of publication, specifically, 1492 measurements of dissolved inorganic carbon, 1491 of total alkalinity and 1336 of pH, from 22 January 2018 to 30 April 2025. This dataset is a replacement for the previous version (v2024.08; doi:10.25850/nioz/7b.b.zh). All data that appear in both this and the previous version are identical.