The 2014 Greenland-Portugal GEOVIDE CTDO2 hydrographic and SADCP data (GO-SHIP A25 and GEOTRACES GA01)

Date 2017-11-22
Temporal extent 2014-05-15 -2014-06-30
Author(s) Lherminier PascaleORCID1, Sarthou GeraldineORCID2
Contributor(s) Branellec Pierre, Daniault Nathalie, Kermabon Catherine, Le Bot Philippe, Leizour Stephane, Menage Olivier, Hamon Michel, Desprez De Gesincourt Floriane, Perault Fabien, De Saint-Leger Emmanuel, Lefebvre Alison
Affiliation(s) 1 : Ifremer, Univ. Brest, CNRS, IRD, LOPS UMR 6523, IUEM, F-29280, Plouzané, France
2 : CNRS, LEMAR UMR 6539, IUEM, F - 29280 Plouzané, France
DOI 10.17882/52153
Publisher SEANOE
Note ANR GEOVIDE (2014-2018)
Keyword(s) OVIDE, circulation, water mass, GEOTRACES, CTD, North Atlantic
Abstract

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.

 

Licence CC0
Acknowledgments We gratefully acknowledge the crew of the R/V Pourquoi Pas? vessel and her captain Gilles Ferrand for their help and assistance during the cruise.
Sensor metadata

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 MB NC, NetCDF Processed data Open access
GEOVIDE SADCP OS38 current data 45 MB NC, NetCDF Processed data Open access
Geovide CTD data - SeaDataNet format 14 MB ODV Quality controlled data Open access
Geovide CTD data - SeaDataNet format 30 MB NC, NetCDF Quality controlled data Open access
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How to cite 

Lherminier Pascale, Sarthou Geraldine (2017). The 2014 Greenland-Portugal GEOVIDE CTDO2 hydrographic and SADCP data (GO-SHIP A25 and GEOTRACES GA01). SEANOE. https://doi.org/10.17882/52153


In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :


Zunino Patricia, Lherminier Pascale, Mercier Herle, Daniault Nathalie, Garcia-Ibanez Maribel L., Perez Fiz F. (2017). The GEOVIDE cruise in May–June 2014 reveals an intense Meridional Overturning Circulation over a cold and fresh subpolar North Atlantic. Biogeosciences, 14(23), 5323-5342. Publisher's official version : https://doi.org/10.5194/bg-14-5323-2017 , Open Access version : https://archimer.ifremer.fr/doc/00412/52302/