Any one remember the Global Warming mechanic, which was removed in some of the subsequent games if I'm remembering correctly?.
Anyone who wants a game thats in the same vein, i can somewhat recommend Humankind. But it doesn't really have climate change mechanics, more like 'IPCC naming and shaming' since factions will hate on factions that pollute, even in the medieval era..
I would have appreciated that global warming was a thing that needs to be researched, since the phenomenon has only been discovered relatively late (in terms of the entire span of human civilization).