I have found clear evidence of global warming!
It is about 3°C warmer today than it was in 536AD.
How did that happen?
Wikipedia has an article on it.
In a nutshell, it was volcanoes. Ash and clouds from the ejected gasses blocked sunlight and that had a major cooling effect.
I know we like to blame mankind for climate change and the weather, but...
PS: This is also a stellar example of how colder weather is far worse than warmer. Warmer, in general means more agriculture and bigger yields and less famine. Famine marches hand in hand with the cold.
A good example is the collapse of the Norse colonies in Greenland as the Medieval Climate Optimum faded into the Little Ice Age.
ReplyDelete