Probably has had some influence. And it measurable. Look we need responsible global environmental policies. This is important no matter what. All I am saying is that our atmosphere is so much bigger than what we can ever produce and there are natural cycles that will occur that cannot be stopped.
Everything I know about global warming comes from my time at Hopkins in the Earth and planetary sciences program. The people I studied under drilled the ice cores themselves and had data that brought a lot of common Sense to this issue. Until someone shows me something that dismisses those findings I am going with what I learned.