To generate this ORAS5 time series dataset, homogenisation conventions have been applied to the ORAS5 source GRIB data to ensure consistency, usability, and alignment across chosen variables and time steps. The processed data were then written to an ARCO Zarr archive, enabling efficient cloud-optimised access and scalable data retrieval.

The dataset presented here is a subset of selected parameters from the full ORAS5 global ocean monthly dataset. Requirements for additional parameters may be considered. Please raise your request with ECMWF Support here.