Water column dissolved nitrous oxide concentrations from Lake Grevelingen (The Netherlands)

The data set comprises concentrations of dissolved N2O from seawater samples collected during 16 expeditions to Lake Grevelingen (The Netherlands). The expeditions took place onboard R/V Navicula between the September 2020 and September 2023 and focused on physical and biogeochemical surveys of the area. Samples were collected by drawing water from a 10 L Niskin bottle into borosilicate 100 mL vials, which were then sealed with rubber (butyl) stoppers and aluminium caps. Immediately after collection, samples were preserved by adding 200 µL of a saturated mercuric chloride solution. Samples were analyzed by means of a standard headspace method coupled to gas chromatography/electron capture detection (see e.g. Wilson et al., 2018; https://doi.org/10.5194/bg-15-5891-2018).