Copernicus Marine In Situ TAC quality information document for near real-time waves (QUID NRT WAVES)

The document describes the Quality of the Near Real Time (NRT) WAVES product delivered by the Copenicus Marine In Situ TAC. It applies to the INSITU_GLO_UV_NRT_OBSERVATIONS_013_048 product. It consists of four datasets each dedicated to near-surface currents measurements: drifter: near-surface zonal and meridional raw velocities measured by drifting buoys, wind & wind stress components, surface temperature if available (see Table 1). These surface observations are part of the DBCP's Global Drifter Program. drifter_filt: near-surface zonal and meridional velocities and 3-days filtered velocities measured by drifting buoys. All the platforms are gathered together and concatenated in concatenated daily files. radar_total: near-surface zonal and meridional raw velocities measured by High Frequency radars (HF radars, as acronym HFR), standard deviation of near-surface zonal and meridional raw 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., 2017 and Corgnati et al., 2018) radar_radial: 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., 2017 and Corgnati et al., 2018)