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AR6: Headline Statements from the Summary for Policymakers

No they say that,
Each 1000 GtCO2 of cumulative CO2 emissions is assessed to likely cause a 0.27°C to 0.63°C increase in global surface temperature with a best estimate of 0.45°
and in the very next section says that,
Over the period 1850–2019, a total of 2390 ± 240 (likely range) GtCO2 of anthropogenic CO2 was emitted.
It is not a great leap to figure how much warming resulted from the stated 2390 GtCO2 emitted!
Whatever...

You repeating the same two things over and over again in two separate threads does not, and will not ever prove that the IPCC is saying that all warming is from just CO2.
 
Whatever...

You repeating the same two things over and over again in two separate threads does not, and will not ever prove that the IPCC is saying that all warming is from just CO2.
If the sensitivity used for cumulative CO2 and the amount of cumulative CO2, equal the observed warming,
there is not room in the observed warming for any other factors.
 
If the sensitivity used for cumulative CO2 and the amount of cumulative CO2, equal the observed warming,
there is not room in the observed warming for any other factors.

Are there no other factors listed in the report? Are you sure? Have you read it all?
 
If the sensitivity used for cumulative CO2 and the amount of cumulative CO2, equal the observed warming,
there is not room in the observed warming for any other factors.
Sure... if you pretend that aerosols are not cooling the planet at the same time. Are you really unable to comprehend that aerosols are counteracting some of the warming from GHGs?
 
Sure... if you pretend that aerosols are not cooling the planet at the same time. Are you really unable to comprehend that aerosols are counteracting some of the warming from GHGs?
If the aerosols lowered the sunlight reaching the ground between 1950 and 1985, by 10 W m-2, and then from 1985 to 2005, increased the sunlight reaching the ground by the
same 10 W m-2, how do we count that ?
 
There is no misunderstanding their words.
They stated what the best estimate TCRE sensitivity was per unit of 1000 GtCO2,
They stated how many of those units had been emitted.
and lastly they stated the total observed warming.
Any of the other forcing agents from the IPCC forcing table, would have to be added or subtracted from there.

BUT THEY DID NOT SAY 100% OF THE CAUSE OF AGW IS CO2 ONLY.

I don't know how much more clearly one can make it. CO2 may be a dominant forcing but literally NO ONE except denialists and science illiterates characterize the science that simply.
 
If the sensitivity used for cumulative CO2 and the amount of cumulative CO2, equal the observed warming,

I thought the numbers you gave were not exactly equivalent. Hmmmm. Could you be...hyperbolizing a bit?

there is not room in the observed warming for any other factors.

Hmmm, I've read a lot in the field and I've never heard any legitimate scientist limit the discussion to CO2 only. You must not read much in the literature.
 
If the aerosols lowered the sunlight reaching the ground between 1950 and 1985, by 10 W m-2, and then from 1985 to 2005, increased the sunlight reaching the ground by the
same 10 W m-2, how do we count that ?
There you go again... talking about one specific location as if it applied to the entire planet when it doesn't. And you are not even characterizing the data correctly either.
 
BUT THEY DID NOT SAY 100% OF THE CAUSE OF AGW IS CO2 ONLY.

I don't know how much more clearly one can make it. CO2 may be a dominant forcing but literally NO ONE except denialists and science illiterates characterize the science that simply.
No! They said that the computed warming of the CO2 already accumulated is 1.0755°C,
Elsewhere, they said that the total observed warming was 1.09 [0.95 to 1.20] °C.
Do you think 1.0755°C, falls into the posted range of [0.95 to 1.20] °C?
 
There you go again... talking about one specific location as if it applied to the entire planet when it doesn't. And you are not even characterizing the data correctly either.
Buzz, do you agree or disagree with the IPCC's number TCRE of .045°C for each 1000 GtCO2?
 
Buzz, do you agree or disagree with the IPCC's number TCRE of .045°C for each 1000 GtCO2?
I meant 0.45°C for each 1000 GtCO2?
Another interesting thing about the IPCC cumulative CO2 number, is that is only counts emissions not what is absorbed by the environment.
It is generally agreed that each GtCO2 is about .127 ppm of atmospheric CO2, so 2390 GtCO2 should increase the CO2 level by 303.53 ppm,
yes the observed increase in CO2 level is only 135 ppm, less than half.
This also brings up the limitations of models that start with an abrupt doubling of CO2 level.
Gradual emissions like the 2XCO2 180 year path Earth appears to be on, allows time for CO2 uptake by the environment.
 
If the sensitivity used for cumulative CO2 and the amount of cumulative CO2, equal the observed warming,
there is not room in the observed warming for any other factors.

And yet still no empirical evidence that modulating the tiny fraction that represnts 0.01% (100PPM) of our atmosphere at enormous economic and social cost will make the slightest difference to anything

Go figure :rolleyes:
 
And yet still no empirical evidence that modulating the tiny fraction that represnts 0.01% (100PPM) of our atmosphere at enormous economic and social cost will make the slightest difference to anything

Go figure :rolleyes:

Oh boy, yet another evenint of nonsense from flogger.
 
And yet still no empirical evidence that modulating the tiny fraction that represnts 0.01% (100PPM) of our atmosphere at enormous economic and social cost will make the slightest difference to anything

Go figure :rolleyes:

This is absolutely fascinating. This "small numbers" point. You do know that there are poisons that can take down a full-grown human at dosages of milligrams right? Why do you insist on this incredibly unscientific confusion over "small numbers"?????

It's like you don't even know the first foreign thing about the carbon cycle. (That's another way I know you've never set foot in a geology class let alone got a "PhD" in it!)
 
Oh boy, yet another evenint of nonsense from flogger.
It’s rare for someone to showcase their abject ignorance about a topic, their total lack of insight into current thinking, and combine it with a misguided sense of smugness that just mixes together into a spectacular fail cocktail.


But Flogger hits it regularly.
 
Oh boy, yet another evenint of nonsense from flogger.

Yup. He's baaaaack.

I love how a "PhD" geologist doesn't understand how small numbers aren't as devastating a critique as floggy likes to think they are.
 
Whatever...

You repeating the same two things over and over again in two separate threads does not, and will not ever prove that the IPCC is saying that all warming is from just CO2.
How about nearly all, almost identical to all?
 
How about nearly all, almost identical to all?
Nope. At least not that I have seen. But feel free to show me where they say this. I am someone who actually reads the IPCC reports but maybe I missed it or haven't gotten to that part in AR6 yet.
 
Nope. At least not that I have seen. But feel free to show me where they say this. I am someone who actually reads the IPCC reports but maybe I missed it or haven't gotten to that part in AR6 yet.
The math pressented was saying it.
 
Who's math? The IPCC's or some rando's on an internet forum?
Buzz there is nothing special about the math that shows the IPCC's statement about accumulated CO2 emissions
IPCC AR6 SPM
Over the period 1850–2019, a total of 2390 ± 240 (likely range) GtCO2 of anthropogenic CO2 was emitted.
and the IPCC's stated sensitivity to said emissions, and the warming that would result.
Each 1000 GtCO2 of cumulative CO2 emissions is assessed to likely cause a 0.27°C to 0.63°C increase in global surface
temperature with a best estimate of 0.45°.
Where things fall apart is that the Cumulative CO2 emissions and the observed increase in CO2 level, are not the same.
The normal carbon cycle has picked up more than half of the CO2 emitted.
Without the Carbon uptake, the cumulative emissions published would have increased the CO2 level by 303 ppm,
yet CO2 levels have only increased by 135 ppm.
 
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