Microcat and current meter data from moorings of the Eastern Boundary array (Rockall Trough), as part of UK OSNAP (Overturning in the Subpolar North Atlantic Programme) from October 2020 to July 2022.

The Rockall Trough moorings located at approximately 57 ° north 11 ° west form the eastern boundary of the international OSNAP (Overturning in the Subpolar North Atlantic Programme) array. This observing system has measured the full depth, basin-wide overturning circulation and associated transport of heat and freshwater since 2014. The Rockall Trough component, now funded through a National Capability programme (CLASS) NERC LTSS CLASS (NE/R015953/1), consists of three vertical moorings in the boundaries of the subpolar basin, supplemented by glider missions to provide contemporaneous temperature and salinity information. Data included in this release were sampled between October 2020 and July 2022 and are from single point current meters and moored CTD instruments giving water velocity, temperature, salinity, and pressure.