The CMCC Global Ocean Physical Reanalysis System (C-GLORS) is used at CMCC to simulate the state of the global 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.

C-GLORS is currently implemented at 1/4 degree resolution configuration, using 75 vertical levels. Is used to produce a global past reconstruction of ocean state in the last two or three decades, in the framework of GLORAN-CMEMS projects.

For more information, please visit the official C-GLORS website.

References:

• Storto, A., Dobricic S., Masina S. and Di Pietro P., 2011: “Assimilating Along-Track Altimetric Observations through Local Hydrostatic Adjustment in a Global Ocean Variational Assimilation System” , Monthly Weather Review, 139, 738–754.
• Storto, A. and Masina, S., 2016: “C-GLORSv5: an improved multipurpose global ocean eddy-permitting physical reanalysis”, Earth Syst. Sci. Data, 8, 679–696 – https://doi.org/10.5194/essd-8-679-201
• Storto, A., Masina, S., Simoncelli, S. et al., 2019: The added value of the multi-system spread information for ocean heat content and steric sea level investigations in the CMEMS GREP ensemble reanalysis product. Clim Dyn 53, 287–312  – https://doi.org/10.1007/s00382-018-4585-5
• Cipollone, A., Banerjee, D. S., Iovino, D., Aydogdu, A., and Masina, S., 2023: “Bivariate sea-ice assimilation for global-ocean analysis–reanalysis”, Ocean Sci., 19, 1375–1392 – https://doi.org/10.5194/os-19-1375-2023.