Here is my take (rambling thoughts) on global warming. I have taken A.S. as well as Geology classes in the past but don't get me wrong, I am no expert ( as well as most anyone else on this earth)
The earth has warmed. That is fact. You cannot debate this or debunk because it is true. We have evidence that shows in the past 2000 years the earth has warmed.
The problem is, of course, is it influenced by mankind and how much
Well, the problem them lies in the evidence to support one way or the other. There is simply not enough climate data to analyze and make an accurate statement either way. Period. Yes, you can do sediment samples and etc but you will never be able to accurately pin down any correlation between one or the other.
SO, is the warming the chicken or the egg?
Right now, the Atlantic Multidecadal Oscillation (AMO) and in the past 15 years has been well above average. THIS warming has been and will continue to lead to above-average sea surface temperature anomalies in the Atlantic.
What does this have to do with anything? Well, mostly, it is close to home. This general warming cycle in the Atlantic (as well as Caribbean /GOM for that matter) has resulted in nearly two decades of heightened effects, mostly for tropical systems as well as enhanced Bermuda ridging and enhanced rainfalls along the peripheries. Also, tornados will be more common and stronger with the extra moisture feed from the GOM/Atlantic.
So, you could (with some factual and as well as empirical evidence) make an argument is the Western worlds man-made global warming is only a reflection of the past 15-20 years of AMOs , some times extreme, warming.
That does NOT mean I personally do not agree there is man-made GW or not, or think we should just freely dump into the environment chemicals and gases, etc..however I am personally skeptical of any side that uses assumptive declarations in the argument