masterjedijared
New Member
I was wondering if you fine folks could help me out here. I'm trying to casually improve my debating skills (or at least intelligent conversation skills) and I was talking to a friend about global warming data. He's a denialist who goes so far as to say that since there were Ice Ages in the past then another one would be more probable than what the current data would suggest. I was reading some stuff Phil Plait linked and decided to bring it to his attention. My questions are how'd I do overall, do I come off as overly dickish (ironic concern since I got the links from Plait, lol), how is my understanding on the science end of things and how did my friend/opponent do?
Without further ado!
Without further ado!
MasterJediJared
Other Guy, the earth is heading towards an ice age! http://climate.nasa.gov/evidence/
Other Guy
I knew it!!!!!
MasterJediJared
Did you even look at that link? >_>
Other Guy
What was the CO2 content in the atmosphere when there was lots of active volcanoes?
MasterJediJared
That graph illustrates hundreds of thousands of years. The CO2 went up right during the Industrial Revolution.
MasterJediJared
There's been plenty of high-volcanic-activity years in that period yet it has been during the modern human era that CO2 is highest.
MasterJediJared
Anyway, I was being sarcastic. There's absolutely no data and no mechanism to indicate an impending ice age.
Other Guy
No one has any idea what will actually happen... Just lots of theories
MasterJediJared
You don't know what the word theory means do you... ;D
MasterJediJared
Theories are explanatory and predictive models. Global warming has been undeniably illustrated.
Other Guy
Ugh, i'm bored now. I'm going to bed...
Other Guy
And so have ice ages and mini ice ages...
MasterJediJared
But what data or papers indicate that an ice age is about to happen now?
MasterJediJared
Here's a more overall view: http://tinyurl.com/2bo2jsk
Other Guy
Dude, its called knowing history... There have been dramatic changes in climate before for reasons we simply don't know.
MasterJediJared
So, we should use only historical data instead of contemporary data?
Other Guy
No... It's called being a scientist, considering all possibilities based on knowledge and research...
Other Guy
I've never said it's going to happen for sure, I've simply said it's happened before...
MasterJediJared
Oh, I completely agree. However, there's an overwhelming amount of data showing that the average world temp is increasing-
MasterJediJared
And that the increase is correlative to CO2 levels and significant human events, such as the Industrial Rev
MasterJediJared
Ah, also, I agree. There's been ice ages before.
Other Guy
And it's done that before every other ice age too... And I'm sure there are times we don't have data for with more CO2 in the atmosphere
MasterJediJared
But I was bringing up that you had once said that the planet is most likely entering into a new ice age rather than warming.
MasterJediJared
The most significant ice ages are represented on the CO2 graph and we're currently in an unprecedented high level of CO2
MasterJediJared
If CO2 was causal then we'd have seen a significant cooling era after the Ind. Rev began
Other Guy
I'm talking way back, like prior to the first ice age, lots of tectonic instabilities still...
MasterJediJared
Still, within the past 650 thousand years there's been tectonic activity too. I just don't think tectonic activity is causal to today's-
MasterJediJared
Global warming data.
Other Guy
When was Hawaii formed?
MasterJediJared
Well, wikipedia says earliest habitation was around 300 or so BCE
Other Guy
I mean as in the islands being made, not people moving there... lol.
MasterJediJared
Well it looks to be upwards of almost 70 million years ago is when formation began
Other Guy
Yeah, I would be curious about climate then, global average temp and CO2 levels...
MasterJediJared
There's been island forming events since then... including major eruptions of hawaii itself.
Other Guy
There are suppose to have been eras with lots and lots of big eruptions in short periods of time way, way back millions of years ago
MasterJediJared
That may be true, but the data of today still clearly says average temps are rising and temps and CO2 are going up corellatively
Other Guy
I want data from those times, weather trends and CO2 content and stuff...
MasterJediJared
So, even though we know human activity is producing CO2, and we see it and temps rising, we should STILL wait to gather data that-
MasterJediJared
May ultimately be erroneous for our current geologic epoch?
Other Guy
What's the best way to predict the future?
MasterJediJared
Pay attention to what's happening now, gather info and build models that can predict past events effectively.
Other Guy
Um yeah... Something I got beaten into me at Clemson, even the best models are inherently flawed... It's called the real world factore
MasterJediJared
Argument from Ignorance fallacy. Just because we haven't gotten it right or perfect doesn't mean we're completely wrong.
Other Guy
And this is why I don't do discussions with you much anymore... You're absolutely right all the time...
MasterJediJared
Here's a good article on how CO2 from volcanoes compare to human activity: http://hvo.wr.usgs.gov/volcanowatch/2007/07_02_15.html
MasterJediJared
Ah, I see. Well nighty night then