No matter what changes the climate makes, we are quite likely going to be destroyed...and by our own hands. The confluence of various disciplines, specifically AI, genetic engineering, robotics, and prosthetics will result in the creation of a new dominant species that will replace and possibly eliminate homo sapiens. Exactly what shape this new dominant species will take is hard to determine, but it's coming for us within the next 25 to 50 years.
Consequently, climate change is of little or no significance in relation to humanity's survival.