This document provides a description of the procedures and tools used for the delayed mode quality control, processing and assessment of the Sea Level REProcessed (REP) product delivered by the Copernicus Marine Service In Situ Thematic Assembly Centre (In Situ TAC). It contains also a quality overview of the product, and applies to the following product as described in the Copernicus Marine Service Catalogue: INSITU_GLO_PHY_SSH_DISCRETE_MY_013_053

The Sea Level REP product is a global product that provides the best available version of in-situ historical sea level observations in In Situ TAC, reprocessed and validated in delayed mode at centralized level by the Production Centre. This is required for assessment of operational models and reanalysis, and for use by the research community. It integrates the in-situ sea level observations, mainly from tide gauges that provide coastal sea level, aggregated from the Regional EuroGOOS consortium (Arctic-ROOS, BOOS, NOOS, IBIROOS, MONGOOS and Black Sea GOOS), National Data Centers (NODC’s), Hydrographic Offices or Metoffices, the Global Sea Level Observing System (GLOSS) and EMODnet Physics.