Leading climate scientists have ridiculed and criticised comments made by controversial Canadian psychologist and author Jordan Peterson during an interview on Joe Rogan’s podcast.
During a new four-hour interview on Spotify’s most popular podcast, Peterson – who is not an expert on climate change – claimed that models used to forecast the future state of the climate couldn’t be relied on.
Peterson told Rogan that because the climate was so complex, it couldn’t be accurately modelled.
He said: “Another problem that bedevils climate modelling, too, which is that as you stretch out the models across time, the errors increase radically. And so maybe you can predict out a week or three weeks or a month or a year, but the farther out you predict, the more your model is in error.
“And that’s a huge problem when you’re trying to model over 100 years because the errors compound just like interest.”
Peterson said that if the climate was “about everything” then “your models aren’t right” because they couldn’t include everything.
This doesn’t sound sensible.
“He seems to think we model the future climate the same way we do the weather. He sounds intelligent, but he’s completely wrong.
“He has no frickin’ idea,” she said.
Different models produce different outputs. Different assumptions put into the same models produce different outputs. We have no one model, with fully known interactions, which all accept as being valid.
Different runs of the same model produce varied outputs.
We have a range, that is, of answers, not the one true and valid one. What Peterson has said is entirely true.