qThis hypothesis argues that
millennial oscillations
were produced by the internal interactions among various components of the climate system.
qOne most likely internal
interaction is the one associated with the deep-water formation in the North
Atlantic.
qMillennial oscillations can be
produced from changes in northward flow of warm, salty surface water along the conveyor
belt.
qStronger conveyor flow releases
heat that melts ice
and lowers the salinity of the North Atlantic, eventually slowing or stopping the formation of deep water.
qWeaker flow then causes salinity
to rise, completing
the cycle.