GEOTRACES GA01 (cruise GEOVIDE) ²³¹Pa, ²³⁰Th and ²³²Th activities.

(1) University of Oxford Department of Earth Sciences; (2) Independent University of Barcelona Institute of Science and Environmental Technology; (3) GEOMAR Helmholtz Centre for Ocean Research, Kiel (East Shore Campus)

This dataset consists of 126 ²³¹Pa, 118 ²³⁰Th and 121 ²³²Th measurements in the water column. All the measurements were obtained from seawater samples collected during the GEOVIDE cruise aboard the R/V Pourquoi Pas? from 15 May to 30 June, 2014. The cruise sampled four regions in the North Atlantic between 40° - 60°N: Labrador Sea, Irminger Sea, Iceland Basin, and Western European Basin. A total of 150 full-depth water-column samples were collected from 11 stations. Seawater samples of 5 Litres were directly filtered into acid cleaned HDPE plastic bottles from Niskin bottles mounted on the Stainless Steel CTD Rosette through AcroPak ™ Pacapsules with Supor Membrane ® (0.45 µm pore size). Filtered seawater samples were sealed with a screw cap and Parafilm, and then double bagged for storage. Sample analysis and measurement were conducted in the University of Oxford using isotope dilution Multi-collector Inductively Coupled Plasma Mass Spectrometry (MC-ICP-MS), including preconcentration with iron coprecipitation, anion exchange chromatography, and measurement on a Nu instrument MC-ICP-MS. This dataset contributes to GEOTRACES programme along GEOTRACES Section GA01 in high latitude North Atlantic.