The cooling since 2000 correlates with sunspot activity.
The number of sunspots has been declining since about 2002. Solar Cycle 23 ended in 2002, and Solar Cycle 24 which started in January hasn't really managed to get itself going.
The medieval mini ice age, was correlated with a period of little or no sunspot activity called the Maunder Minimum. So, on this basis should I be dusting off my sledge for this winter??