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Hi all,
Apologies, have a conflicting meeting in California that I can’t step out of.
For a name, how about something short like: 
* Descriptor Interoperability Group or
* Variable Interoperability Group
Those imply FAIRification is going on and are pretty inclusive.
On the OBO / ENVO side, we’re documentating contribution models to help more people add to or edit the ontology :
This way, we (all of us) can more quickly add material corresponding to the phenomena variables reference (environmental entities and their qualities) and provide that element for full variable semantics in other systems.