此外，北大西洋热输送系统关闭所引起的温度变化太小，无法解释新仙女木天气。
Additionally, the temperature changes induced by a shutdown in the North Atlantic heat conveyor system are too small to explain the Younger Dryas.
史密斯说：“我们可以设想，甲烷的减少导致新仙女木降温时期的来临。”
"It is conceivable that this drop in methane contributed to the Younger Dryas cooling episode," says Smith.
他们对是否是撞击的影响还是其他的天气影响导致后冰河世纪的新仙女木事件也存在分歧。
They also disagree about whether an impact or some other climate event caused the Younger Dryas at the end of the ice age.
有证据显示，就像今天墨西哥暖流做的那样，新仙女木期之前的洋流会将热带的温暖海水带到北极圈的海域中，热量会被推来推去。
There is evidence that currents which bring warm water from the tropics to the Arctic, as the Gulf Stream does now, can be pushed around.
Kennett博士指出，在新仙女木期之初，曾经有一个庞大的淡水湖中的淡水瞬间突破了限制它的冰山大坝，并流入北大西洋。
Dr Kennett worked on the idea that at the start of the Younger Dryas a huge lake of fresh water suddenly breached a wall of ice that had confined it, and flowed into the northern Atlantic Ocean.
Kennett博士指出，在新仙女木期之初，曾经有一个庞大的淡水湖中的淡水瞬间突破了限制它的冰山大坝，并流入北大西洋。
Dr Kennett worked on the idea that at the start of the Younger Dryas a huge lake of fresh water suddenly breached a wall of ice that had confined it, and flowed into the northern Atlantic Ocean.
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