Background

The data from the two reanalyses will be made available via the Mars Catalogue

https://apps.ecmwf.int/mars-catalogue/

Access via web-api

The data is downloaded from the ECMWF public datasets service using web-api with which is a "programmatic approach" using python scripts . You will need to download the appropriate python modules to run these scripts. For example, the python scripts will contain from ecmwfapi import commands, like in this simple example:

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