The CMCC Global Ocean Physical Reanalysis System (C-GLORS) is used at CMCC to simulate the state of the ocean in the last decades. It consists of a variational data assimilation system (OceanVar), capable of assimilating all in-situ observations along with altimetry data, and a forecast step performed by the ocean model NEMO coupled with the LIM2 sea-ice model.
There are two versions of C-GLORS
currently released (v4 and v5)
that are run at eddy permitting resolution (about 1/4 degree of horizontal resolution) and
covering the meteorological satellite era,
plus historical reanalyses performed at 1/2 degree of resolution,
covering the entire XX century and referred to as
(CMCC Historical Ocean Reanalysis).
Picture representing the Seasonal Ocean Heat Content
Anomaly Evolution (1980-2015),
with seasonal cycle removed, as simulated by C-GLORSv5