I am working my way through this thread. This is one of those topics that is hard to discuss as there are lunatics at each end making it hard to have conversations about things without it turning into a shouting match.
I am curious about some of the headline temperatures for example recent UK hotspots have not been the traditional places where the weather was recorded its been some random Airport in the UK. Where before the highest temp recorded etc was from a select few places (37 ish). I suspect this was because of the way weather data was recorded, it had to be a trustworthy person and location.
Have the historical temperatures been correct to follow the new definitions of the SI units?
With the historical data, how much can we trust its accuracy? Was there any traceability or testing done on the thermometers, how accurately was the reading taken and did they actually do it or was it another one of those jobs to be done that sometimes people just made up.
Modern methods of measurement are digitally done and recorded every second/30 seconds therefore able to catch the peaks better than the old glass thermometer.
How has the microclimate near the recording stations changed over the years? Lots more buildings, more tarmac, fewer trees and intensive farming all have effects.
There are many other things that we just put trust into the scientists to do their job well but not all do. I really dislike the terminology that keeps getting banded about with emergency/crisis as it doesn't help the conversation. I remember a few years back a reporter visited a group of protesters and asked them about the information behind what was written on the banners and on the leaflets they handed out, very few had any knowledge of the information but they were willing to hand out leaflets and shout at people.
I get tired of it all, the BBC News is pushing out a story about climate this and that every few days and eventually I know I will just switch off from it all. I have never flown in an aeroplane, I holiday near home, I try to do my part to avoid making a massive dent in the environment...meanwhile, the wealthy[1] people of the world do WTF they want as they can afford to.
btw the UK Weather people have got temperature records going back some 170 years and the data is there to look at if you want at
https://www.metoffice.gov.uk/research/climate/maps-and-data/historic-station-data[1]Not all but enough for me to hold most of them to account for it.