- Sep 19, 2015
- AFL Club
- Brisbane Lions
- Other Teams
- Swansea City, Gumbies FFC
I found this article a few years back...
When is the MWP, per these graphs? (approx)
Great Plains: 770-1020
Makassar Strait: 1120-1210
China: 810-990, 1120-1250 (cooler patch in the middle)
Sargasso Sea: 880-1150
South Africa: 820-970
When you average all the different regional datasets together, the medieval warm period is actually a real thing, but it's not as dramatic as any one region because each period has its peak at a different point. Indeed, according to Jo Nova's graphs, the Great Plains is experiencing the Little Ice Age while Venezuela is having its Medieval Warm Period, while the Makassar Strait is cooling in the Dark Ages while China is having its Medieval Warm Period.
If you average everything out you get a little peak overall for the MWP around 950-1250AD but only a small one, nothing like the current peak, which is based on substantially elevated temperatures globally and all at the same time. Denialists claim the small size of the MWP peak in worldwide reconstructions is the result of a massive globalist conspiracy but it's actually just that they never actually compare the dates on their own graphs.
It's bad history too. Roman armies were really quite pragmatic about adopting local customs, including cold weather gear, when they operated in colder regions.