Atlantic Multidecadal Oscillation

The Atlantic Multidecadal Oscillation (AMO) is an ocean current that is thought to affect the sea surface temperature of the North Atlantic Ocean based on different modes on multidecadal timescales. While there is some support for this mode in models and in historical observations, controversy exists with regard to its amplitude, and in particular, the attribution of sea surface temperature change to natural or anthropogenic causes, especially in tropical Atlantic areas important for hurricane development.