Half the problem with all the failed predictions is that they are mostly based on trying to convince 'us' that the worst aspects of any recent weather patterns must be somehow caused by CO2 because CO2 must only do bad things, like wiping out pretty butterflies while simultaneously encouraging rampant plagues of yucky slimey things.
It's a sort of political opportunist propaganda, and the Met Office chiefs are in thick of it.
Truth is they don't know.
They don't have a clue - because climate is far too complex and chaotic to be modeled in any meaningful way.
But they won't admit this or even mention it in their predicted scenarios.
And by the way if we had £X million more we might be better at
Chances are the ice will similarly confound the sure-certain predictions and follow it's normal undulations in extent since the impact we might have is being grossly over-stated as usual.