FlightPathOBN:
When we are dealing with baro-vnav, we are very aware of the cold temp corrections, and I have always wondered why this has not been an issue before.
With baro-vnav, it is dealt with only in the final approach segment (FAS). It has to be because criteria require that the baro-vnav final approach segment be accorded quasi-precision vertical path obstacle clearance surfaces; i.e., the way to escape having to have FAS step-down fixes.