"like John F Clauser, nobel prize winner
turns out he is a world renowned physicist that knows nothing about climate change
here are his claims debunked"
That's actually quite funny. You've quoted the blog of a rather opinionated psychologist (John Cook) who specialises in attacking scientists whose opinions differ from 'the consensus'. Again this pretty much proves the point that was being made in the film.
In a sense there is no such thing as 'climate science'. You could better describe it as 'climate studies'. The field is very wide and includes everything from the relatively few atmospheric physicists who deal with particular interactions in weather systems, to geographers and biologists who try to estimate what might happen if such-and-such a change were to happen. All of these are relatively lazily called 'climate scientists'. As a theoretical physicist, John Clauser is an exceptionally numerate chap who would have no problem understanding the underlying data of climate change, and can understand the statistics necessary to make sense of it, and is more than capable of evaluating the various papers written on the subjects.
Very very few of the people you will see interviewed as 'climate experts' are that close to the data; most are working on the basis 'we are told that the world's temperature will change by 'x'degrees, and we are then estimating what might happen if that were so.
There is no one agreed fixed position on 'climate change'. There is universal agreement that the world is warming. There is less agreement on why and how. In particular the sensitivity of temperature to the level of carbon dioxide is uncertain and the estimates of sensitivity have been reducing over time (i.e. CO2 has less effect than initially thought). The IPCC in its last report ruled out the most 'catastrophic' predictions as unrealistic. [For an insight into the current state of thinking on sensitivity to CO2 you'll find this article useful, and its quite readable for a numerate layman]
by Hakon Karlsen A comprehensive explainer of climate sensitivity to CO2 Short summary According to the Intergovernmental Panel on Climate Change (IPCC), the atmosphere’s climate sensitivity to CO2is likely between 2.5 and 4.0°C. Simply put, this means that (in the … Continue reading →
judithcurry.com
In short, James Clausen is more than capable of expressing an informed opinion on the published science in climate studies. He also has a right to do that, and if psychologists like John Cook wish to take him to task, then they need to do that by discussing the data and arguments he presents, not by attacking him personally.