Reykjanes Ridge Experiment (RREX) dataset
|Temporal extent||2015 -2017|
|Author(s)||Thierry Virginie1, Mercier Herle1, Petit Tillys1, Branellec Pierre1, Balem Kevin1, Lherminier Pascale|
|Affiliation(s)||1 : Ifremer, France|
|Keyword(s)||North-Atlantic Ocean, current-topography interactions, RREX, water mass, circulation|
The Reykjanes Ridge is a major topographic feature of the North-Atlantic Ocean. It lies in a central position along the main paths followed by the upper and lower limbs of the Meridional Overturning Cell (MOC), which contributes at moderating the European climate in creating a transport of heat toward the North Atlantic. Our hypothesis is that the Reykjanes Ridge influences the main components of the upper and lower limbs of the MOC because it is a strong constraint on the horizontal and vertical circulation, it impacts the water mass distribution and evolution and it is a region of intense turbulent mixing. The objective of the RREX project is to conduct a process study in order to better understand the role of the Reykjanes Ridge on the dynamics and water mass transformation in the subpolar gyre and ultimately on the MOC. This project relied on two hydrographic cruises carried out in 2015 and 2017 to acquire the adequate dataset to (1) provide a synoptic high-resolution and full depth survey to monitor the flow along and across the ridge, (2) to quantify the variability of the vertical and horizontal structure of the currents parallel to the ridge at daily to seasonal time-scales and (3) to provide sufficient turbulence observations to monitor the heterogeneous and intermittent mixing processes.
This dataset currently provides the measurements from the 133 CTDO2 stations realized during the RREX2015 cruise, carried out from the 5th of June to the 10th of July 2015. At each station, the following measurements are available: (1) pressure, temperature, conductivity and dissolved oxygen measurements with a CTDO2 probe, (2) salinity and oxygen concentration data from sea water samples at 28 levels. It also provides OS38 and OS150 S-ADCP data acquried in transit during the RREX2015 cruise. The two datasets were processed and adjusted following Petit et al. 2018 [http://doi.org/10.13155/53471].
|Utilisation||Data are published without any warranty, express or implied. In addition to properly cite this data set, it would be appreciated that the relevant RREX articles be cited when using this data set in a publication.|
|Acknowledgements||The authors thank all colleagues and crew of the R/V Thalassa and R/V Atalante involved in the acquisition of the RREX 2015 and RREX 2017 cruises data. K. Balem, P. Branellec, P. Lherminier, T. Petit and V. Thierry were supported by the French Institute for the Exploitation of the Sea (IFREMER, Plouzané, France), and H. Mercier by the French National Center for Scientific Research (CNRS). T. Petit was also co-funded by the Brittany Region (France). The RREX project is funded by IFREMER, INSU/LEFE (Institut National des Sciences de l'Univers/Les enveloppes fluides et l'Environnement), Brittany Region, CG29 (Conseil Général du Finistère, France), and BMO (Brest Metropole Ocean, France). The work was supported by the French Oceanographic Fleet (TGIR FOF) for the realization of the cruises. This is a contribution to the AtlantOS project funded by the European Union's Horizon 2020 research and innovation program under grant agreement 633211.|