It’s official! GLODAP Version 3 is released!
On behalf of the GLODAP Reference Group and hundreds of seagoing oceanographers who have tirelessly collected data all over the ocean for several decades, it is our pleasure to announce the release of the new Global Ocean Data Analysis Project version 3, GLODAPv3!
GLODAPv3 provides surface-to-bottom ocean biogeochemical observations determined through chemical analysis of discrete bottle samples. This new version comprises data from 1181 cruises, spanning more than 50 years of observations (1972 – 2023). It includes all data from the previous GLODAPv2.2023, together with an additional 57 new cruises. All data have been evaluated for systematic differences and adjusted appropriately. The result is the most comprehensive and rigorously quality controlled ocean interior data product for marine biogeochemistry studies. Its analysis will allow for quantitative assessment of biogeochemical changes and feedbacks between climate change and the ocean.
Created using generative AI tools
GLODAPv3 consists of:
- a database with original cruise data, as submitted by individual data providers but updated to WOCE Exchange format
- a merged data product, with systematic measurement differences removed for key biogeochemical variables
The original data, their documentation and DOIs are available at the Ocean Carbon Data System of NOAA NCEI.
GLODAPv3 is the result of a multi-year global team effort funded by the EU Horizon Europe project OceanICU, US NOAA, the SCOR-IOC International Ocean Carbon Coordination Project (IOCCP) and many other projects, programmes and organisations.
The procedures and results are extensively documented in:
Lange, N., Lauvset, S. K., Carter, B. R., Humphreys, M. P., Woosley, R. J., Olsen, A., Bittig, H. C., Kozyr, A., Álvarez, M., Azetsu-Scott. K., Becker, S., Brown, P. J., da Cunha, L. C., Dias, L., Hoppema, M., Ishii, M., Jeansson, E., Murata, A., Müller, J. D., Pérez, F. F., Schirnik, C., Steinfeldt, R., Ulfsbo, A., Velo, A., and Tanhua, T. (submitted). The Global Ocean Data Analysis Project version 3 (GLODAPv3) –
an internally consistent biogeochemical data product for the world ocean.
Humphreys, M. P., Lauvset, S. K., Lange, N., Bittig, H. C., Carter, B. R., Hoppema, M., Murata, A., Olsen, A., Tanhua, T., Ulfsbo, A., Velo, A., Woosley, R. J., Azetsu-Scott, K., Müller, J. D. and Pérez, F. F. (preprint). Furthest-first inversion for internal consistency adjustments in the biogeochemical data product GLODAPv3. . doi:10.5194/egusphere‑2026‑3063.
GLODAPv3 Release Poster
GLODAPv3 Inversion Poster
