Dataset: YSI sonde data: temperature, salinity, and dissolved oxygen from Groves Creek salt marsh, Skidaway Island Georgia, USA, 2013-2015

YSI sampling:
YSI 600 OMS sondes were used to obtain time series data for dissolved oxygen (DO) at stations S2 and S8. At S8, the sondes were mounted on the same bottom frames as the CTDs. At S2, the YSIs (and the fDOM and CHL fluorometers and the S::CAN absorbance spectrometer) were mounted on a rack in the open “moon pool” of a floating dock moored in the outside bend of the channel at Groves Creek.  The open center space of the dock was ~ 1x2m, and the instruments were mounted 1 m below the surface (~80 cm below the underside of the dock). The YSIs were battery powered and sampled at 15-minute intervals.  Battery power and fouling limited deployments to 2 weeks in the warm months and up to 4 weeks in the winter. Individual YSI sonde deployments at S2 and S8 overlapped by ~24-48 hours.  YSIs were also subject to periodic batch intercalibration trials.