Cariou Thierry auteur aut IRD Hillion Sandrine auteur aut IRD Brouquier Armelle auteur aut IRD Rousselot Pierre auteur aut IRD Roubaud Fabrice auteur aut IRD Pondaven Ildut auteur aut IRD Diverrès Denis auteur aut IRD Bachelier Céline auteur aut IRD Llido Jérôme auteur aut IRD Bourlès Bernard auteur aut IRD text journalArticle eng text/pdf reformatted digital access This paper presents a biogeochemistry dataset derived from the French component of the PIRATA (Prediction and Research Moored Array in the Tropical Atlantic) program in the Gulf of Guinea. This program, which started in 1997 with the deployment of a buoy network, has offered the opportunity to collect seawater biogeochemistry parameters since 2004. The measured parameters include salinity, dissolved oxygen, nutrients (since 2004), phytoplankton pigments (since 2011), marine pH (since 2021) and total alkalinity (since 2023). Following rigorous procedures, we provide high-quality data for studying the spatial and temporal variability of these parameters, with the aim of gaining a better understanding of the underlying processes that drive the ocean's biogeochemical cycles in the Tropical Atlantic. The data are available in the SEANOE repository, which is accessible for scientific data in the marine sciences. specialized ATLANTIQUE ZONE TROPICALE GUINEE GOLFE 032 036 12 1 813 [11 p.] 2025 https://www.documentation.ird.fr/hor/fdi:010093562 10.1038/s41597-025-05003-x [F B010093562] https://www.documentation.ird.fr/hor/fdi:010093562 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2025-06/010093562.pdf IRD - Base Horizon / Pleins textes 2025-06-11 2025-06-18 fdi:010093562 fre