How do we Know Human are Causing Climate Change?

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abu afak

It's amazing how spot on scientists were about this over 40 years ago.

Scientists come to opposite conclusions about the causes of recent warming trend depending on which datasets they consider.

ShieldSquare Captcha

iopscience.iop.org

Solar variability and orbital forcings coupled with albedo of the northern hemisphere have driven all climate fluctuations and environmental uncertainty over the last 3 million years because the planet is uniquely configured for bipolar glaciation and the planet's temperature is at the threshhold for extensive northern hemisphere glaciation. Wake the fuck up

 

[abu afak]

Scientists come to opposite conclusions about the causes of recent warming trend depending on which datasets they consider.

ShieldSquare Captcha

iopscience.iop.org

Solar variability and orbital forcings coupled with albedo of the northern hemisphere have driven all climate fluctuations and environmental uncertainty over the last 3 million years because the planet is uniquely configured for bipolar glaciation and the planet's temperature is at the threshhold for extensive northern hemisphere glaciation. Wake the fuck up

Already refuted Several times with Links.
You're a knowing harassment Troll.
SWAT!/bye

 

[ding]

Already refuted Several times with Links.
You're a knowing harassment Troll.
SWAT!/bye

Incorrect. Solar variability and orbital forcings coupled with albedo of the northern hemisphere have driven all climate fluctuations and environmental uncertainty over the last 3 million years because the planet is uniquely configured for bipolar glaciation and the planet's temperature is at the threshhold for extensive northern hemisphere glaciation. Wake the fuck up

 

[Sunsettommy]

No, it's not.

View attachment 592759

Water Vapor isn't on your chart.

 

[BackAgain]

abu afak

It's amazing how spot on scientists were about this over 40 years ago.

You mean the ice age we’re now freezing through?

 

[abu afak]

Water Vapor isn't on your chart.

Good news.
Even though it wasn't addressed to me, I finally found your 6 word post in that 20 line, 1000 word signature of yours.
And yes, water vapor is a major GHG.
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[HenryBHough]

Were not climate change natural we'd all be dinosaurs.

Now, tell me about a possible downside to that.

 

[abu afak]

Were not climate change natural we'd all be dinosaurs.

Now, tell me about a possible downside to that.

Dinosaurs are grazers that wake up and wander daily,
If sea level goes up 5 or 50 feet they just move a bit further from the coast that month, year or century.
They didn't have cities on waters edge, or very near, that would displace 1 or 2 billion of their buddies.

 

[Mac-7]

How do we Know Human are Causing Climate Change?​

We dont

 

[Crick]

We do. Isotopic analysis of the CO2 in the Earth's atmosphere shows that virtually every molecule above the 280 ppm pre-industrial level is the result of the combustion of fossil fuel. That number is matched by simple bookkeeping estimates based on the amount of fossil fuel known to have been burned. If you have some other explanation for those empirical observations, I'd love to hear it.

 

[Sunsettommy]

We do. Isotopic analysis of the CO2 in the Earth's atmosphere shows that virtually every molecule above the 280 ppm pre-industrial level is the result of the combustion of fossil fuel. That number is matched by simple bookkeeping estimates based on the amount of fossil fuel known to have been burned. If you have some other explanation for those empirical observations, I'd love to hear it.

Now you are just lying because that is all you have left to run with.

 

[abu afak]

Now you are just lying because that is all you have left to run with.

I had heard that as well.
How long does it take one to look up if what he says is true ?
Why didn't YOU do it?
You ostensibly look up all this obscure 'raw data' and you didn't know and couldn't look this up?
15 seconds.

""...The increase between the year 1800 and today is 70% larger than the increase that occurred when Earth climbed out of the last ice age between 17,500 and 11,500 years ago, and it occurred 100-200 times faster.

In addition, fossil fuels are the only source of carbon consistent with the isotopic fingerprint of the carbon present in today’s atmosphere. That analysis indicates it must be coming from terrestrial plant matter, and it must be very, very old. These and other lines of evidence leave no doubt that fossil fuels are the primary source of the carbon dioxide building up in Earth’s atmosphere."...""

How do we know the build-up of carbon dioxide in the atmosphere is caused by humans?

Fossil fuels are the only source of carbon dioxide large enough to raise atmospheric carbon dioxide amounts so high so quickly.

www.climate.gov

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""...The increase between the year 1800 and today is 70% larger than the increase that occurred when Earth climbed out of the last ice age between 17,500 and 11,500 years ago, and it occurred 100-200 times faster.

And yet the planet is roughly at the same temperature as it was 7,000 years ago, dummy. Which is still 2C below the temperature of previous interglacial cycles.

You have falsely attributed the recent warming trend to atmospheric CO2.

 

[Crick]

And yet the planet is roughly at the same temperature as it was 7,000 years ago, dummy. Which is still 2C below the temperature of previous interglacial cycles.

You have falsely attributed the recent warming trend to atmospheric CO2.

To what do you attribute the trend?

 

[ding]

To what do you attribute the trend?

Primarily the sun, urban heat island effect and the reduced albedo of an interglacial cycle.

Solar variability and orbital forcings coupled with albedo of the northern hemisphere have driven all climate fluctuations and environmental uncertainty over the last 3 million years because the planet is uniquely configured for bipolar glaciation and the planet's temperature is at the threshhold for extensive northern hemisphere glaciation.

One would think the planet being on the precipice of extensive northern hemisphere glaciation would be the starting point of every climate discussion. We can see signs of it every winter.

 

[Toddsterpatriot]

Primarily the sun, urban heat island effect

What about the heat island effect of solar arrays?

 

[ding]

What about the heat island effect of solar arrays?

Offset by converting solar radiation into electricity. The net effect is cooling.

We find that solar panels alone induce regional cooling by converting incoming solar energy to electricity in comparison to the climate without solar panels.

https://www.researchgate.net/publication/283975603_Impact_of_solar_panels_on_global_climate

 

[abu afak]

And yet the planet is roughly at the same temperature as it was 7,000 years ago, dummy. Which is still 2C below the temperature of previous interglacial cycles.

You have falsely attributed the recent warming trend to atmospheric CO2.

Just because it was warmer in a/some periods than it is now, does not mean GHGs are not causing the current warming.
That's fallacious reasoning and/or the usual ding repeat trolling/stalking the same fallacies regularly.

One could easily find the reason in any of the OP links or by googling.
This cycle unlike the other is not orbital/solar-force caused (and then contributed by CO2 et al) but rather near uniquely driven by man's GHG forcing which in the usual natural situation would become mere contributors.
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[ding]

Just because it was warmer in a/some periods than it is now, does not mean GHGs are not causing the current warming.
That's fallacious reasoning and/or the usual ding repeat trolling/stalking the same crap regularly.

One could easily find the reason in any of the OP links or by googling.
This cycle unlike the other is not orbital/solar-force caused (and then contributed by CO2 et al) but rather near uniquely driven by man's GHG forcing which in the usual natural situation become mere contributors.
`

And yet our planet is 2C cooler than in the past with 120 ppm more atmospheric CO2.

 

[ding]

This cycle unlike the other is not orbital/solar-force caused (and then contributed by CO2 et al) but rather near uniquely driven by man's GHG forcing which in the usual natural situation become mere contributors.

Orbital forcing coupled with increased albedo with the northern hemisphere at the threshhold for extensive northern hemisphere continental glaciation is what triggers the glacial cycle. Solar variability coupled with decreased albedo and orbital forcing is what slowly brings us out of glacial cycles.