FaIR 2.0

[chrisroadmap]

Pull request

Following sterling work by John, Nick, Zeb, Stuart and others it's probably time to get this show on the road

• [ ] Tests added
• [ ] Documentation added (where applicable)
• [ ] Example added (either to an existing notebook or as a new notebook, where applicable)
• [ ] Description in CHANGELOG.rst added
• [ ] Include default solar and volcanic forcings in v2.0
• [ ] Purge legacy v1.6 code
• [ ] README
• [ ] check why some pre-industrial concentrations are 1e-15 rather than zero
• [ ] GIR-like optimisation
• [ ] three-layer ocean temperature representation alongside impulse response

[rgieseke]

On the purging item, have you considered this (possible) option, i've made in https://github.com/openscm/openscm-runner/pull/25#issuecomment-738814946?

As an aside question:

Or, thinking about it more, will it even be possible to install both FaIR1.X and FaIR2 at the same time given their namespace clash?

Could one move FaIR 1.6 to a legacy subdirectory in the FaIR tree and keep it for a while?

from fair.legacy.forward import fair_scm

or

from fair.legacy.forward import fair_scam as fair1_scm

Nor sure if it would work without trouble but most imports should be relative.

Also nt sure if it's worth it or too confusing, but for a while it might be useful.

[chrisroadmap]

was actually thinking a new repository (fair_legacy) but maybe this could work instead

[chrisroadmap]

No longer needed