The problem also has been shown repeatedly to be the result of poorly sited weather recording stations. There are thermometers placed inches from hvac condensers, thermometers in the path of jet wash, thermometers in the middle of acres of blacktop.
I would imagine that the placing of thermometers could be a very large part of any “global warming”/”climate change”. By judicious placing of temp-indicating instruments,it could be made to indicate anything someone wanted it to. It’s like comparing apples to oranges & then throwing in a few bananas for effect.