The default version of FAIRv1.6.2 starts in 1765. The AR6 version starts in 1750. Some of the initial conditions in the model (e.g. period 1 slow+fast temperature contributions in the mixed layer) were taken from a run of the default Python version of the model. The difference between these two is almost surely negligible, but should update these values to the AR6 version initialized in 1750.
The default version of FAIRv1.6.2 starts in 1765. The AR6 version starts in 1750. Some of the initial conditions in the model (e.g. period 1 slow+fast temperature contributions in the mixed layer) were taken from a run of the default Python version of the model. The difference between these two is almost surely negligible, but should update these values to the AR6 version initialized in 1750.