If climate change is the cause, that would imply that we've never had wildfires in the history of the world, right? They're just a completely new phenomenon, that nobody has ever seen before.
The fires would be the 'butterfly wing' part of the move into releasing an updated model that show various climate models for various locations around the globe. Most now focus on the oceans getting warmer (in some spots) and that warmth being transferred with the water to a different location where that heat is released into the air with effects on climate as the 'by-product' of that change. That change would include modification of the jet stream from a mostly east to west direction and any big dips were something the winters could cause.
Winter has bigger north and south movements of air and that would be reflected on the ground as being a global weather modifier and it\s effects can be 'measured' and that can be used to supply a 'probability' and from there 'reasonable thinking' is the only guide there is. For North America it means warmer in BC and Alaska and cooler all the way from the Rockies (@ elevation) to Miami. (rain and hail)
The warmer air off the coast of Alaska and BC enters the Arctic and that cause an increase in air pressure on the cold air circling the Arctic and a 'blob equal to the size of the warm one that entered to the west is) gets sent south as the Gulf Stream is causing winds to blow from the south rather than the west.
Take that pattern around the globe and Moscow would be getting Greece like weather and Ireland would be getting colder winds from the north as that would be the Gulf Stream air after all it's heat and moisture had been taken by the cold winds from Canada's north. The faults in the oceanic rifts would increase the carbon output by some amount if it's rate of expansion (Atlantic and Pacific basins)
That means you start with a timeline that is 200M years old. The crustal ages are based on cores of the sea-floor so maps that are more accurate than the global one that is currently used are possible to show when expansion rates changed and those years could be used as a reference point to apply known weather reports and rates should begin to show a warming or cooling trend depending where you were. The Pacific also expanded at a different rate than the Atlantic so the heat released to the water would have been greater and weather changes would also have been greater depending which part of the ring of fire that was expanding faster/slower and that may have been enough to determine when the earth was in an ice-age or not or determine if El Nino was the manifestation of that heat making it to surface and being transferred to the atmosphere where it caused global wind pattern changes
