Randall Carlson
speaker
1,469 appearances
2 recordings
2 series
first heard Apr 2025
last heard 11 Mar
Randall Carlson’s voice in public audio — every appearance, attributed to the second.
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Appearances
There is the evidence is yeah. If these events happened now, I'd be challenging archeologists of 10,000 years in the future to find any evidence that we were here and built this civilization.
The land itself is the evidence.
You can't. And they don't. The next thing that has to happen in these studies is the integration of all of this diverse and disparate evidence and putting it together into a coherent model of global change. And linking it with, for example, mass extinctions. Linking it with extreme climatic events. Ryan, why don't we go back to the slides.
Oh yeah, one of my heroes, Herman Flone, he's one of the godfathers of modern climatology. Let's see what he had to say.
He said, from the viewpoint of, and look at this, this is 1979, from the viewpoint of the climatologist, the most important result of these investigations is the fact that within the human timescale of about 100 years or less, our climate is much more variable than hitherto assumed. Especially important, and indeed disquieting,
is the evidence of abrupt coolings within warm interglacial periods, apparently as rare events with a recurrence interval of 10,000 years. Now, he's talking about cooling events, but the counterpart is warming events, and we're going to see some more of that. Let's go to the next one, Ryan.
So he says the problem of intense, abrupt, intense coolings during an interglacial, which we're in an interglacial, During an interglacial climate similar to the present climate resembles, to some extent, the Damocles sword hanging high above the globe and its inhabitants. Because of its possible consequences for the human race, its study deserves a much higher priority. Now, this was in 1979.
Now, hold on this slide for a second. So what we're looking at here is from Greenland ice cores. If you go down the right-hand column, zero is now. Ten means 10,000 years ago. Over on the left, zero is the ice surface. 1,500 means 1,500 meters down. Now, shifts to the left mean cooling. Shifts to the right mean warming. Okay.
Now, if you look at this, and of course, at one point, as it says here, look, the graph of the last 10,000 years of temperature change as preserved in Greenland ice cores shows temperature constantly and repeatedly warming and cooling 2 to 3 degrees Fahrenheit or more. In fact... Just up from the bottom, you'll see a spike to the left. That's at 8,200 to 8,400 years ago.
That was a spike of cooling that lasted about 200 years. If that happened now, our civilization would be extinct. You would have global agricultural failures. Yeah, okay. And within two years, within two years, we'd have mass famine. Shortly after that, because of weakened immune systems, we'd have pandemic diseases, the whole thing. Humans would survive. We survived that.
However, we would be pretty much back to the Stone Age, unless we created some kind of or place where we could preserve, right?
Yes, I would agree with that. This is from ice cores that were extracted nearly nineties. Okay. Like I think this paper that we're looking at, it was published in 93. And, uh, at the time the question was, well, is this just a local or regional event? Or was it global?
In a second, when Ryan goes to the next slide, we're going to see the Younger Dryas in there, which again, one of the questions was, is this local, regional, or global? Well, pretty much the evidence is overwhelming now in favor of global. It was global in its extent. Now, it wasn't necessarily uniform everywhere about the plan, but it was definitely the signature of the Younger Dryas is global.
Now, if we go to the next slide, now don't click it yet. What we're going to do is we're going to go down to the bottom of the ice core. And we're going to see something pretty amazing that needs to be part of the discussion about climate change. If you come to me and you start talking about climate change and the consensus and the science is settled, I say, get the hell out of here.
Yeah. Yeah.
Oh, extreme. And look down towards the bottom. You see that massive shift to the right? That's a period called the Eemian. Marine isotope stage 5E. That is a warming. That's a global warming right there. And it was not caused by soccer moms driving SUVs.
That goes back to 250,000 years ago. That's all the way to the bottom 3000 meters down. That's all the way to the bottom of the Greenland ice sheet. Now this is oxygen isotopes and. And what can cause something like that?
Well, see, you just asked me, that's the question. Yeah. We need to know. Yeah. Now, you can see the spasm that got us out of the Ice Age. There was a massive warming. Then it cooled. That was the Younger Dryas. If we go to the next slide, I think we're zooming in on that. Let's go back. So, like, just how –
Well, yeah, I mean, you think about going back to a full glacial mode compared to now. Yeah. I mean, yeah, you had at the end of the last ice age, you had armadas of icebergs, giant icebergs flowing south along the east coast of the United States as far as Florida. Yeah.
So you go across the peninsula to the other side 12,000, 13,000 years ago, you could see huge icebergs floating to the south, melting as they flow, but But, yeah, I don't think we've seen – I mean, have you seen any icebergs off of – It's been a minute, yeah.
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