Gamma-ray spectrometry dataset along the route of the research vessel Laura Bassi during the Antarctic campaign

Gamma-ray spectrometry is a key tool for monitoring environmental radioactivity and tracing radionuclide distributions in marine ecosystems. In this study, we present the first dataset acquired by a gamma-ray spectrometer permanently installed aboard the Italian research vessel Laura Bassi during its 2023–2024 Antarctic campaign. The spectrometer, an RS-250 Stationary Radiation Monitor by Radiation Solutions, was mounted on the vessel's upper deck and operated continuously during navigation from Italy to New Zealand and onward to Antarctica, acquiring over ten thousand gamma spectra at ten-minute intervals. Each spectrum was recorded in both N42 and CSV formats and later georeferenced using high-precision navigation data from the ship's GPS systems. The dataset, accessible via an ERDDAP server, supports future studies on radionuclide dynamics, inter-hemispheric comparisons, and oceanic currents. This work contributes to the global effort of marine radioactivity monitoring and open data sharing.