We’re already in the beginning stage of a little ice age in the current Solar minimum. Temperatures are about to get much colder for about a thirty year cycle. When the current inter-glacial may end and the next glacial period resumes is of course not known, but recent research indicates it takes barely a decade to plunge into the deep freeze of one of these glacial periods once it does begin. It remains to be seen how cold the current Solar minimum will take us in the next 10 to 30 years, but past experience suggests the current Solar in activity is somewhat comparable to the cold weather experienced during the 19th Century Dalton Minimum and the much colder Maunder Minimum of the 15th to 18th Centuries.
Anthropogenic sources of Carbon dioxide emissions to the atmosphere simply cannot make a perceptible dent in these conditions, even if there were no humans around to provide such inluence.
I believe the CO2 will have some effect, but not as much as the models say. The effect is a little schizophrenic, Siberia will probably keep warming up even as Florida citrus freezes since CO2 has a relatively larger effect where it is cold and dry and almost none where it is warm and wet.