Climate optimum, what and when was that, was it when Africa was still green, or when Viking’s were growing barley. And the point your skipping over is populations the number of mouths we have to feed if we are growing crops in the Greenland have we lost current fertile land to weather extremes? If so what effect will that have?Humans thrive during climate optimums - its the subsequent cooling that causes the fall of empires.
Analysis of tree ring data and ice cores suggest that the Minoan warm period (3000 years ago) was as warm as the Holocene climatic optimum (6000-8000 years ago).The Roman warm period(2000 years ago) was not quite so warm and the Medieval warm period (1000 years ago) cooler again.
View attachment 974949
So where does our current warm period fit in - there were no thermometers so we have to use historic records and archaeology. If the Vikings were growing barley on greenland during the medeival warm period, could you do that today ? Sea levels were 1.5-2.0 meters higher than now, during the medieval warm period - there are castles built on the coast that are now some way inland, and archaeologic evidence of jettys that high tide no longer reaches.so we must assume that we are not yet as warm as the MWP.
These 5000 year chinese temperature records show that the little ice age (1300-1850AD)
was not just a European event , it was also the coldest period in the last 5000 years.
View attachment 974963
How do you interpret the top graph ? is it 300 years of warming or 3000 years of cooling ?
Ps the land near and at the poles is not a vast area stretched flat maps show it to be. If we lose an extra hundred miles north and south of the equator to desertification or temps, it’s not going to be replaced at the poles.
Your trying to put an optimistic spin on what will be a disaster for our culture lots of cultures have been lost due to weather and climate in history picking the ones that farmed Greenland as a prediction of ours is not that sensible, billions will starve before we are farming Greenland.