It was warmer at that time than now.
https://www.sciencedirect.com/topics/earth-and-planetary-sci...
The medieval warm period coincides with the viking expansion and contraction.
Edit: see response, below
https://www.sciencedirect.com/topics/earth-and-planetary-sci...
The medieval warm period coincides with the viking expansion and contraction.
Edit: see response, below
If you look at the Wikipedia page on the subject: https://en.wikipedia.org/wiki/Medieval_Warm_Period ...it shows that the medieval warm period was not a global phenomenon.
It also contains comical unchecked claims such as "During the Medieval Warm Period, wine grapes were grown as far north as England, where growing grapes is now not feasible". This is blatantly false, as there is a wine industry in England. With summers getting increasingly warm, recent decades have even seen the development of Welsh wines.
Edit: actually it seems to be a selection of articles from different sources, but prominence is given to "Evidence-Based Climate Science", an obscure book, for some reason.
The controversial bit is that wine grapes cannot be grown in England today. They can grow and are grown today.
One planted in 1769 is still around. I assume it's under glass. Saw it when I was a kid (https://en.wikipedia.org/wiki/Hampton_Court_Palace)
[0] thank you, thank you
Edit: a bit more on that ancient and huge vine https://www.atlasobscura.com/places/the-great-vine-east-mole...
another article from a wine grower in the UK has a nice history https://www.winegb.co.uk/visitors/background-info/history-of...
This may be the case: global warming is happening everywhere, but it's more pronounced in the North. And melting icebergs and glaciers make for better PR than say one degree warmer temperatures in the deserts of Saudi Arabia.
I just picked a random site that talked about it.
As for the wine in England:
https://www.nytimes.com/interactive/2019/10/14/dining/drinks...
> Places, like England, that were historically unsuited for producing fine wine have been given the opportunity to join the global wine world, transforming local economies in the process.
That being said, UK wine production is more of a curiosity than an industry. Domestic wine represents 1% of U.K. wine consumption, and they U.K. doesn’t make the top 25 of wine producing nations.