Dataset: Physicochemical parameters, nutrients, radium and stable Isotopes, carbonate chemistry & organic alkalinity measurements from the West Florida Shelf, collected onboard R/V Hogarth and R/V Weatherbird II (2022–2023), following Hurricane Ian

Water samples were collected using a CTD rosette and processed for the analysis of organic contaminants following standard EPA protocols and previously published methods (Adhikari et al., 2017, 2019; Romero, 2018). Physicochemical parameters were measured with a YSI EXO II multiparameter water-quality sonde (SKU#: 599502-02) attached to the ship’s CTD rosette. The samples collected in Niskin bottles were filtered onto pre-baked GFF filters (0.7 µm), and the filters were stored frozen for particulate organic contaminant analysis. The samples were solvent-extracted and analyzed at the University of South Florida (using modified EPA methods; Romero, 2018) with Gas Chromatography Triple Quadrupole Mass Spectrometry (GC-MS/MS).