The clear take home is that the Little Ice Age was an event of the northern hemisphere and that all this is so far not Global. There is still solar variation and measuring that efect will demand much more refinement.
What is important here is that we have hard data that we can trust for the southern hemisphere. Variation sources should also be much simpler. Which begs the question of what to do with the data from the Northern Hemisphere whose trustworthiness is far more suspect.
Add in the impact of increasing greening from CO2 uptake and we are at sea. we have watched a short period of warming 1975 - 1995 generate heat which did spill over into the Arctic. That is now fading away and a drop in solar radiation is setting us up for a sharp chill in the northern hemisphere.
get ready to grow lots of barley and oats..