Using Argo Floats to Characterize Altimetry Products: A Study of Eddy-Induced Subsurface Oxygen Anomalies in the Black Sea

The identification of mesoscale eddies from remote sensing altimetry is often used as a first step for downstream analyses surface or subsurface auxiliary data sets, in so-called composite analysis framework. This framework aims at characterizing the mean perturbations induced by on oceanic variables, merging local anomalies multiple instances according to their relative position eddies. Here, we evaluate different sets derived Black Sea and compare adequacy characterize oxygen salinity signatures cyclonic anticyclonic In particular, propose that theoretical consistency estimated error reconstructed anomaly may serve qualify accuracy gridded products BGC-Argo provide strong asset regard. most recent these prepared with coastal concern frame ESA EO4SIBS project, provides statistics eddy properties that, comparison earlier products, are closer model simulations, particular anticyclones. More importantly, signature floats more consistent when set relocate profiles into an eddy-centric coordinate system. Besides, reveal intense which stress importance contribution dynamics support hypothesis this extends beyond transport involves net biogeochemical processes.