I don't dare even have an opinion on the topic.
When someone knows what they're talking about, get back to me.
At the heart of it (without regard to who/what is causing it), when we moved to FL there was already discussion (Tampa Trib is where I read it) that by the mid 20s (ca 2050) Florida would have lost coastline quite visibly to the rising oceans as ice areas melted. (that's one) As I wrote on another thread that takes an increase of 1-2 degrees (we'll use Celsius here as there is a greater heat increase/decrease in heat with each degree up/down) in the AVERAGE (the yell letters aren't for you Sling, they are for the deniers) annual temperature of the entire world - i.e. the whole Earth's climate - not that of any one area. And more important, this has no bearing on the unimportant (except for local areas) weather that you get from your local weather person(s) (well, the info about it).
And, thats the big problem the deniers do not get. We aren't going to start having every area get rapidly hotter and hotter - it does not take that . All it takes is a few years of, say, 1/10th of a degree rise (or less - say 1/50th per year) in the overall world average each year to get us to melting glaciers, smaller snow fields, shorter winters (in the sense of cold periods - and the lowest temps/number of days at those temps during the cold periods.) and longer, dryer summers with more days of higher heat (not dramatically higher or dramatically - small chanes have effects that build up/add up quite nicely) .
And, years of El Nino can easily have movre immediate effects on local/wide area problems in the short term and areas El Nino affects - these should not be confused with the gradual change in warming - they are two seperate things though eventually the annual build up will eventually likely strngthen the effects of El Nino - but just a little bit at a time.
Oh, one last thing - one of the sillier things that the deniers have pushed is that there can't be a rise in sea level as the glaciers and other ice masses melt (though they really aren't because the scientists are just making the stuff up

) because the water level stays the same when ice melts as it was before the ice melted. And that is actually true of all ice that is freely floating directly in the ocean (and, this can be checked by a simple, though misleading here, experiment: put ice in a glass of water, measure the surface level before and after the ice melts - no change. Problem is that they are not taking account of the fact that much of the world's ice is located on actual land masses (including enough on Greenland for a 7 meter rise and a lot more on Antarctica) so the only large mass of ice that experiment applies to is the Arctic ice mass as it's melting really would not raise the oceans (though it would have other big effects).
For deniers who read this, feel free to refute - but before you try, I'd research each of these and note I have made no comments on human effects vs. non-human (though I freely admit I think much of the increase is human caused and a direct result of technology (I love technology, by the way - I am no sabot thrower!!!)