Publication Date:
2024-06-12
Description:
Dataset used in Henson et al. (2023). Binned, calibrated, merged glider data collected with 2 Slocum G2s and 1 Seaglider from 0 to 1000 m depth. The data were collected NW of South Georgia, Scotia Sea between 19 October 2017 - 13 February 2018. Gliders sampled continuously following a triangular path of ~12 km per side centred on 52.75°S, 40.16°W. The glider sampled with a vertical resolution of ~20 cm, emerging 5 to 6 times per day. Temperature, Conductivity and Depth were measured with a Seabird CTD (pumped) on Slocum gliders and a pumped Seabird CTD sail on the Seaglider. Dissolved oxygen was measured with Aanderaa optodes. Chlorophyll fluorescence and optical backscatter were measured using Seabird Triplet ECOPucks. Oxygen and chlorophyll data were calibrated against shipboard bottle samples collected using a CTD rosette. Chlorophyll data have been corrected for non-photochemical quenching. Optical backscatter was additionally converted into POC concentration using shipboard CTD bottle samples, and estimates of POC flux were then made following the methods detailed in Henson et al. (2023). Data from the 3 gliders were inter-calibrated prior to ship calibration. Estimates of primary production are made from the glider data and photosynthetic properties observed during a coincident cruise, following the methods of Mignot et al. (2018). The 2D glider profile data are interpolated into 1 m depth bins for all variables; data are provided for every profile.
Keywords:
chlorophyll-a concentration; export flux; File content; Glider; Glider, Slocum G2; netCDF file; netCDF file (File Size); Optical backscatter sensor; Oxygen concentration; particulate organic carbon (POC); POC flux; Seaglider; SG542; SL398; SL404; Southern Ocean; South Georgia; Temperature and Salinity; transfer efficiency
Type:
Dataset
Format:
text/tab-separated-values, 6 data points
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