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The E3SM ini file can be found here: ESGF ini file and on GitHub: https://github.com/ESGF/config/blob/devel/publisher-configs/ini/esg.e3sm.ini
The format for this file is fairly straight forward, the first section defines what the data facet options are, the second section implements the facet options, and the final section uses those facets to layout the directory format and dataset ID format.
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