DRILLET, Y.', LELLOUCHE, J.M.’', LAMOUROUX, J.', LAW, CHUNE, S.', DREVILLON, M.', 
BOURDALLE BADIE, R.', PERRUCHE, C.', AQUF, L.2, TITAUD, 0.2, SAMSON, G.', 
RUGGIERO, G.', BRICAUD, C.', GARRIC, G.', ZUO, H*, CIPOLLONE, A.“, RENSHAW, R.° 
Mercator Ocean International, °CLS, *Meteo France, *ECMWF, °CMCC, *MetOffice 
OVERVIEW 
Original products are now available in Copernicus Marine 
Service catalogue with added value to monitor ocean state 
and variability: 
-updated version of the biogeochemistry reanalysis 
and new micronekton reanalysis, 
- global multi system ensemble reanalysis at 1/4°, and 
„ocean Monitoring Indicators (OMis), which are: 
maps, timeseries, and trends for several globa: 
Essential Ocean Variables (EOV) including uncertainty 
information. 
In this paper, details about the main achievements 
during Copernicus 1 period are provided for the global 
high resolution physical system, the waves forecast, the 
piogeochemistry and the ocean reanalysis. Then, current 
status of available products delivered by the GLO MFC is 
summarised. The last section illustrates a few examples 
of ongoing developments that will be integrated in future 
Zopernicus Marine Service systems 
The Global Monitoring and Forecasting Center (GLO MFC) is 
coordinated by Mercator Ocean International (MOi) who is in 
charge of research and development, system development 
and integration, calibration and validation of products, 
evolution and operation for most systems operated 
in this framework. This is achieved thanks to a strong 
Dartnership with several Institutes involved in different 
stages in Copernicus Marine Service development phases 
from R&D to production. For R&D activities (including 
new development and system evolution), main partners 
are CNRS, BSC, INRIA and CNR. On the other hand, CLS, 
Meteo France, MetOffice, CMCC and ECMWF are involved in 
production of reanalysis products and also wave forecast. 
From 2015 to 2021, many developments have been 
performed in the GLO MFC with important milestones. For 
the operational near real time forecasting systems main 
updates are: 
the global physical 1/12° system including new 
Surface Merge Ocean Current datasets (SMOC) and 3D 
5-hourly frequency fields for main physical variables, 
a wave forecast system with an increase of resolution, 
the integration of sentinel data in physical, 
biogeochemical and waves forecasting system, 
*he data assimilation of ocean colour to initialise near 
real time biogeochemistry forecast. 
Two new reanalysis systems have been developed 
consistently with the near real time system: 
the Global 1/12° physical reanalysis and its monthly 
climatology, and 
- the Global wave reanalvsis. 
1. MAIN ACH ;EVEMENTS 
FROM 2015 TO 2021 
1.1 Global high resolution physical system 
Since October 2016, GLO MFC has been delivering real- 
time daily services (weekly analyses and daily 10-day 
forecasts) with a new global 1/12° system called GLO12v3 
fully described in Lellouche et al. (2018). This new syster 
was initially deployed over the October 2006 - October 
2016 period, assimilating “reprocessed” or “near real time” 
observations (in situ temperature and salinity vertica. 
profiles, along track altimeter observations, satellite