Table 1 A brief overview of the primary salinity QC systems used by various organizations.

WOD-QC^37,43

World Ocean Database - Quality Control

NOAA National Centers for Environmental Information (USA)

Auto & Manual

EN4-QC^17,39

Version 4 of the “EN” series of datasets - Quality Control

Met Office Hadley Centre (UK)

Auto & Manual

Argo-QC³⁴

(1) Argo - Real Time Quality Control (Argo RT-QC)

(2) Argo - Real-time adjusted QC

(3) Argo- delayed-mode QC (Argo-DMQC)

Argo Data Management Team

Auto & Manual

ICDC-QC²⁰

Integrated Climate Data Center - Quality Control

University of Hamburg (Germany)

Auto

CORA-QC^41,42

Coriolis Ocean dataset for ReAnalysis - Quality Control

Societe Coopérative OceanScope (France)

Auto & Manual