This is quite subtle though — weather forecast models obviously do better if they have initial conditions that are closer to the observations, and one might argue that for particular climate model predictions that are strongly dependent
on the base
climatology (such as for Arctic sea ice)
tuning to the
climatology will be worthwhile.
On the other hand, trying to «fix» say the
climatology of Australia while avoiding wrecking the
climatology of North Africa is a rather more difficult thing to
tune without going back to valid physics principles.