You're correct in general but you need to be more specific with the years if you think there's a discrepancy. One would assume that there's some time delay from

You're correct in general but you need to be more specific with the years if you think there's a discrepancy. One would assume that there's some time delay from mixing and some other sources of change. But I think there shouldn't be any if smoothed? Easiest visually would be to integrate the emissions and compare it to the keeling curve, or differentiate the keeling curve and compare it to the emissions.