In the simulations, the shift seems to occur when a pulse of warm Atlantic Ocean water combines with the thinning and retreat of ice under the influence of the global warming trend.

• 在模拟试验里，当温暖的大西洋海水的脉搏与在全球变暖潮流影响下的冰川稀释和后退结合在一起时，这种转变就发生了。