10.1594/PANGAEA.993198Stoltenberg, InaInaStoltenbergGEOMAR - Helmholtz Centre for Ocean Research KielLange, LeaLeaLangeGEOMAR - Helmholtz Centre for Ocean Research KielBange, Hermann WHermann WBange0000-0003-4053-1394GEOMAR - Helmholtz Centre for Ocean Research KielPANGAEA2026bloommesocosm studyNitrous oxidesea surface microlayerSample code/labelDATE/TIMELATITUDELONGITUDEDevice typeStatusCycle descriptionNitrous oxideNitrous oxide, standard deviationNitrous oxide saturationQuality flagMesocosm studiesGas chromatograph with an electron capture detector (GC-ECD)Biogeochemical processes and Air-sea exchange in the Sea-Surface microlayer (BASS)2023-05-16T04:15:00/2023-06-16T08:06:00Dataset10.5194/bg-22-7563-202510.5194/bg-23-1515-2026901 data pointstext/tab-separated-valuesCreative Commons Attribution 4.0 InternationalData access is restricted (moratorium, sensitive data, license constraints)Dissolved nitrous oxide (N₂O) concentrations were measured in the sea surface microlayer (SML, upper 1 mm) and the underlying water (ULW) during the BASS mesocosm study conducted with Jade Bay (southern North Sea) water from 16 May to 16 June 2023. The dataset contains N₂O concentrations from both water layers throughout the experimental period. Sampling of the SML was carried out using the glass plate method. The measurements cover conditions before, during and after a phytoplankton bloom.8.1461000000000253.51479999999994German Research Foundationhttps://doi.org/10.13039/501100001659451574234FOR 5267 - Biogeochemical processes and Air-sea exchange in the Sea-Surface microlayer (BASS)