As it is with all computer modeling...
12 different models, none of them are correct, but, somehow,
people think that if you average 12 “wrong” answers,
you will get the “right” answer.
But they they use the same model that predicts if the atmospheric concentratiom of CO2 ever climbs from 0.04% to 0.05% both ice caps will instantly sublime to steam and the oceans will vaporize and the ground will become a new sea of molten slag causing the polar bears, snail darters, whales and spotted owls to perish