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The 2014 Greenland-Portugal GEOVIDE CTDO2 hydrographic and SADCP data (GO-SHIP A25 and GEOTRACES GA01)
The GEOVIDE cruise was carried out coast to coast between Portugal and Newfoundland via the south tip of Greenland, following the OVIDE line in the eastern part and crossing the Labrador Sea in the western part. The classical hydrographic rosette was cast 163 times at 78 different geographical positions called stations. While the CTD-O2 probe acquired continuous profiles of the “physical” variables (pressure, temperature, salinity and dissolved oxygen), 22 Niskin bottles were closed at different levels during the upcast to provide samples for biogeochemical analysis. After calibration, we find precisions for pressure, temperature, salinity and dissolved oxygen that fit the GO-SHIP international quality requirements. In parallel, but not simultaneously, a trace-metal rosette (TMR) was cast 53 times, also acquiring profiles of physical variables, and equipped with 24 Go-Flo bottles adapted for the sampling of trace metals. Depending on the number of operations, stations were identified as “Short” (one single CTD cast), “Large” (3 CTD casts), “XLarge” (up to 6) and “Super” (up to 11). All along the track of the ship, current magnitude and direction was measured by Ship Acoustic Doppler Current Profilers, down to 1000m depth.
Disciplines
Chemical oceanography, Physical oceanography
Keywords
OVIDE, circulation, water mass, GEOTRACES, CTD, North Atlantic
Location
60N, 40S, -55E, -8W
Devices
Pressure; dbar; Seabird 911+; precision: 1 dbar
Temperature; °C; Seabird 911+; precision: 0.001 °C
Salinity; Seabird 911+; precision: 0.0014
Oxygen; µmol.kg-1; Seabird 43; precision: 1.2 µmol.kg-1
Zonal ocean current; m.s-1; RDI OS38kHz; precision: 0.03 m.s-1;
Meridional ocean current; m.s-1; RDI OS38kHz; precision: 0.03 m.s-1;
Data
File | Size | Format | Processing | Access | |
---|---|---|---|---|---|
GEOVIDE CTD-O2 profiles of classical rosette | 62 Mo | NetCDF | Processed data | ||
GEOVIDE SADCP OS38 current data | 45 Mo | NetCDF | Processed data | ||
Geovide CTD data - SeaDataNet format | 14 Mo | ODV | Quality controlled data | ||
Geovide CTD data - SeaDataNet format | 30 Mo | NetCDF | Quality controlled data |