Pretty good article on that here (LINK)
The Pope is not, and does not claim to be, an all-purpose oracle on sports brackets, the stock market, or tomorrow's weather. Faith and morals only.
There are areas where a moral principle overlaps with what is called a prudential judgment (a judgment of fact). In this case, the Pope could, for instance, say with authority that it is morally wrong to intentionally destroy air/soil/water/crops ---resources needed for our neighbors' survival, or for future generations.
But he could not make an authoritative judgment about whether anthropogenic, carbon-driven, "global warming" or "climate disruption" is or is not happening, or even the opposite ("global cooling"?) or what its causes or remedies might be.
These are science questions, and as such, they are outside of his area of competence.
Just so.
And, although the subject has not yet arisen in this thread, other threads have mentioned the Pope’s treatment of Galileo. Anyone who has closely studied that history should realize that the Pope of that time was Galileo’s friend and admirer. And he said that it was OK if Galileo proposed the THEORY that the earth goes around the sun, contrary to universal belief for thousands of years. Galileo only suffered comfortable imprisonment in his own house after he published his book, because he insisted on saying that the earth going around the sun was a FACT, not just a THEORY.
As scientists note, Galileo’s theory was only proven to be a fact, scientifically, something like a century later. The “proofs” Galileo offered, concerning tides and the moon, were not actually proofs at all, even though his theory eventually was proven to be true.
Catholics believe that God has promised that the Pope will not make pronouncements ex cathedra on faith and morals that are false or heretical. And so far, no Pope ever has, although there were a couple of instances when they came close—but didn’t. There have been bad Popes, like the Borgias, but not even the Borgias crossed that essential line.