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The ROM SAF datasets can be retrieved using web-api from from the ECMWF public datasets service. web-api is a "programmatic approach" for data download with using python scripts.

General information on downloading with web-api is given here: 

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https://pypi.org/project/ecmwf-api-client/

Some examples of web-api scripts for retrieving daily, monthly and observation files for the reanalyses are given here.

Retrieval Efficiency when using web-api

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