Quality Information Document. Multiyear UV IN SITU production centre INSITU_GLO_PHY_UV_DISCRETE_MY_013_044. And Synthetic Quality Overview document (SQO)

This document aims to give a detailed picture of the processes and tools used to validate the product INSITU_GLO_PHY_UV_DISCRETE_MY_013_044. This product consists of 5 datasets each dedicated to near-surface currents measurements (Table 1): ● cmems_obs-ins_glo_phy-cur_my_drifter_PT6H, named drifter in the rest of the document: the NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) Surface Velocity Program (SVP) Drifter’s reprocessing from 1990. It provides the drifter's position, velocity and includes temperature measurements. In addition, a wind slippage correction from 1993 is provided by the In Situ TAC (CLS). ● cmems_obs-ins_glo_phy-cur_my_radar-total_irr, named radar_total in the rest of the document: near-surface zonal and meridional velocities measured by High Frequency radars (HF radars, as acronym HFR), standard deviation of near-surface zonal and meridional velocities, Geometrical Dilution of Precision (GDOP), quality flags and metadata. These surface observations are part of the European HF radar Network (see Mader et al, 2016 , Corgnati et al., 2018 and Corgnati et al., 2019) and the HF Radar US Network. ● cmems_obs-ins_glo_phy-cur_my_radar-radial_irr, named radar_radial in the rest of the document: near-surface zonal and meridional components of raw radial velocities measured by High Frequency radars (HF radars, as acronym HFR), magnitude and direction of near-surface zonal and meridional components of raw radial velocities, standard deviation of near-surface zonal and meridional components of raw radial velocities, quality flags and metadata. These surface observations are part of the European HF radar Network (see Mader et al, 2016, Corgnati et al., 2018 and Corgnati et al., 2019). ● cmems_obs-ins_glo_phy-cur_my_adcp_irr, named adcp in the rest of the document: three-dimensional water current velocities over a depth range along a vessel underway trajectory. The initial product contains current velocities measured on research vessels in the global ocean. Additional ADCP platforms will be considered in next versions: moorings in deep water and coastal stations ● cmems_obs-ins_glo_phy-cur_my_argo_irr, named argo in the rest of the document: ocean currents derived from the Andro delayed mode Argo float trajectories (Ollitrault et al., 2022). Deep current is calculated from float drift at parking depth, surface current is calculated from float surface drift.