What do you think caused these?Not all warming is due to CO2.
I thought that was manifestly clear.
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What do you think caused these?Not all warming is due to CO2.
I thought that was manifestly clear.
Your last post literally proved it. That was a really stupid thing to say. Who cares that a shit load of examples of warming and cooling trends only went back 10,000 years.
What do you think caused them?
What do you think caused these?
The point is to show you how much the climate fluctuates.FIrst off: because going back only 10,000 years is effectively meaningless. That's within the noise of geologic history. But moreso because, as noted, CO2 is not the only source of warming.
I'd have to look more closely at it. Could have been a wide variety of things. Perhaps solar cycles, perhaps ocean currents, perhaps even CO2.
Maybe you can tell us what caused them.
It was sourced.Source the image and maybe I'll take a look at it. If not, then I won't bother.
δ18O from the GISP2 ice core for the past 10,000 years.
Your last post literally proved it.
It's ice core data. Not a random graph. That you don't understand the difference is more proof of your lying about your bonafides.Just a quick technical question: if I can't explain some random graph you pulled from god knows where it means I can't have possibly done a PhD in geology?
That seems pretty weak in the logic department.
My degrees were in organic geochemistry so paleoclimate was not my primary focus.
The point is to show you how much the climate fluctuates.
It's ice core data. Not a random graph.
So you agree with me that the geologic record is littered with examples of warming trends that were not related to CO2 or orbital forcing. That is progress. Next time don't argue against it.No one argues against that. But the point is that paleoclimatologists have already investigated these things and that "variability" that happens naturally usually happens for a reason.
The fact of the matter is that the NATURAL FORCINGS cannot currently account for the warming we've seen in the last 60 years. But if we include human activities the data starts to make sense.
Here's a graph from grida.no that makes the case:
![]()
Here's what you are looking at:
In Graph (A) you see what temperatures SHOULD have done using only natural forcings (solar etc.) The black line is the fit. The RED LINE is what the temperatures ACTUALLY DID. Note how they diverge.
Graph (B) is what the graph looks like if you just rely on "human factors" (human produced GHG's and land use changes etc.). The fit is MUCH better but not perfect.
Graph (C) shows both natural and human forcings. The fit is VERY GOOD.
Natural forcings play something of a role (obviously) but they cannot explain the warming we've seen the last 60 years by themselves. In fact human forcings explain a LOT more of the data than natural.
Greenland ice core data. You are supposed to have a PhD in geology, remember?Without a citation it's pretty much a random graph.
So what cause of this natural variability would have been responsible for all of those temperature changes over the last 10,000 years?No one argues against that. But the point is that paleoclimatologists have already investigated these things and that "variability" that happens naturally usually happens for a reason.
That only goes back 10,000 years.
The earth is 4.5BILLION years old.
Just a quick technical question: if I can't explain some random graph you pulled from god knows where it means I can't have possibly done a PhD in geology?
That seems pretty weak in the logic department.
My degrees were in organic geochemistry so paleoclimate was not my primary focus.
Source the image and maybe I'll take a look at it. If not, then I won't bother.
It's ice core data. Not a random graph. That you don't understand the difference is more proof of your lying about your bonafides.
So you agree with me that the geologic record is littered with examples of warming trends that were not related to CO2 or orbital forcing.
That is progress. Next time don't argue against it.
He is dodging and LYING since you posted the source link
He posted it with the chart from the start on page one.
What you are doing is dodging a simple question.
![]()
No one argues against that. But the point is that paleoclimatologists have already investigated these things and that "variability" that happens naturally usually happens for a reason.
The fact of the matter is that the NATURAL FORCINGS cannot currently account for the warming we've seen in the last 60 years. But if we include human activities the data starts to make sense.
Here's a graph from grida.no that makes the case:
![]()
Here's what you are looking at:
In Graph (A) you see what temperatures SHOULD have done using only natural forcings (solar etc.) The black line is the fit. The RED LINE is what the temperatures ACTUALLY DID. Note how they diverge.
Graph (B) is what the graph looks like if you just rely on "human factors" (human produced GHG's and land use changes etc.). The fit is MUCH better but not perfect.
Graph (C) shows both natural and human forcings. The fit is VERY GOOD.
Natural forcings play something of a role (obviously) but they cannot explain the warming we've seen the last 60 years by themselves. In fact human forcings explain a LOT more of the data than natural.