Conductivity, Temperature, Depth (CTD), Salinity, Dissolved Oxygen, Fluorescence, and Turbidity were collected during upcast profiles at discrete depths of Niskin bottle closure.

Biogeochemical data were obtained from laboratory analyses of the water samples collected from Niskin bottles at discrete depths along the zonal transect at 75°N in September 2021.

Project PRA CASSANDRA. Italian National Research Council - Institute of Polar Sciences data from a local source. The data originators are the CNR-Institute of Polar Science and the National Institute of Oceanography and Applied Geophysics, OGS, Trieste, Italy;