> You realize in 600ad the temp was a 1 hotter than today.
No, I've done a fair amount of research into the historical climate of the PNW and I've never heard that before! Do you have any journal articles so I can read more about it?
No, I've done a fair amount of research into the historical climate of the PNW and I've never heard that before! Do you have any journal articles so I can read more about it?
https://boris.unibe.ch/132301/7/333323_4_merged_1557735881.p...
The phenomenon you’re referring to seems to be regional, in contrast to global warming. Global warming has plenty of regional variation, but the average temperature of the whole planet is, in fact, increasing quite a bit.
Global temperatures were not warmer in the past, because there was less energy retained due to lesser amounts of greenhouse gases in the atmosphere.