> You can tell people the temperature will go up in 20 years

I think the biggest issue with the climate change communication is that the scientists decided to focus on a temperature delta.

There is no meaningful temperature delta, it's just something that you get after a lot of aggregation and averaging.

Sure it makes sense for scientists running their models and such, but it should never have been the primary communication tool to politicians and laymen.

I think it would have been significantly better if they invented some new scale, like the Richter scale or the hurricane severity scale, which instead incorporates the effects of the average temperature rising. A scale which directly communicates a sense of how many more fires will we see per year, how many more severe storms, flash floods etc.