It is not possible to put a figure as to how much the atmospheric carbon will change in one, 10, or even 100 years.
The change in the atmospheric carbon fluctuates based on certain factors:
It is not really possible to predict exactly how humans will behave or what natural processes will happen. Hence, it becomes really difficult to put a figure on how much the atmospheric carbon will change with time.
The global atmospheric carbon was 409.8 ± 0.1 PPM in 2019 and this figure represents an increase of 2.5 ± 0.1 PPM from the previous year. If the latter figure is anything to go by, it means that an increase of 2.5 ± 0.1 PPM happens annually. That would be an increase of 25 PPM in 10 years and 250 PPM in 100 years to come.
More on carbon flux can be found here: https://brainly.com/question/15857288