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

[watsup]

“The most basic reason is that fossil fuels—the equivalent of millions of years of plant growth—are the only source of carbon dioxide large enough to raise atmospheric carbon dioxide amounts as high and as quickly as they have risen. 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

 

[watsup]

“During all of the cycles between ice ages and warm periods over the past million years, atmospheric carbon dioxide never climbed higher than 300 parts per million. At the end of the last ice age around 20,000 years ago, it was 280 ppm. Today it is close to 410. 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. Only fossil fuels—which are the remains of millions of years of carbon uptake by plants—contain enough carbon to produce such a massive change in such a short time.

In addition, only fossil fuels are consistent with the isotopic fingerprint of the carbon in today’s atmosphere. Different kinds of carbon-containing material have different relative amounts of “light” carbon-12, “heavy” carbon-13, and radioactive carbon-14. Plant matter is enriched in carbon-12, because its lighter weight is more readily used by plants during photosynthesis. Volcanic emissions are enriched in carbon-13. The ratio of carbon-13 to carbon-12 in the atmosphere and the ocean are roughly the same. Since carbon-14 is radioactive, it decays predictably over time. Young organic matter has more carbon-14 than older organic matter, and fossil fuels have no measurable carbon-14 at all.”

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

 

[watsup]

“As carbon dioxide concentrations in the atmosphere have risen over the past century or more, the ratio of carbon-13 to carbon-12 has fallen, which means that the source of the extra carbon dioxide must be enriched in "light" carbon-12. Meanwhile, the relative amount of carbon-14—radioactive carbon—has declined. The record of carbon-14 in the atmosphere is complicated by nuclear bomb testing after 1950, which doubled the amount of radioactive carbon in the atmosphere. After the nuclear test ban treaty in 1963, the excess atmospheric carbon-14 began to decline as it dispersed into the oceans and the land biosphere.

In the last four decades, however, the decline of carbon-14 has been noticeably faster than can be explained by continuing dispersal of the bomb-related carbon-14. This faster decline is driven by the addition to the atmosphere of huge amounts of carbon dioxide from a source with no carbon-14. As this carbon dioxide enters the atmosphere, it dilutes the ratio of 14-carbon dioxide (i.e., carbon dioxide containing a carbon-14 atom) to total carbon dioxide in the atmosphere.

Taken together, then, we are looking for a source of carbon dioxide that comes from terrestrial plants (because they are depleted in "heavy" carbon-13), is so old that any carbon-14 it once contained has decayed to non-detectable levels, and is capable of creating a pulse of carbon dioxide that is larger and faster than anything that’s occurred in at least the past million years. Only fossil fuels meet all those criteria.”

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

 

[MamboDervish]

“The most basic reason is that fossil fuels—the equivalent of millions of years of plant growth—are the only source of carbon dioxide large enough to raise atmospheric carbon dioxide amounts as high and as quickly as they have risen. 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.”

Any educated adult who is still in denial of AGW is so scientifically illiterate, they might as well be slaughtering goats and making burnt offerings to their fossil fuel gods.

 

[lemmiwinx]

Water vapor is more of a greenhouse gas than CO2. The global warming hoax has always been about wealth redistribution.

Rich nations owe reparations to countries facing climate disaster, says Pakistan minister

Sherry Rehman, the country’s climate change minister, insists rich polluters must pay their due as country is hit by devastating floods

www.theguardian.com

Rich polluting countries which are predominantly to blame for the “dystopian” climate breakdown have broken their promises to reduce emissions and help developing countries adapt to global heating, according to Pakistan’s minister for climate change, who said reparations were long overdue.

Sherry Rehman, the country’s climate change minister, insists rich polluters must pay their due as country is hit by devastating floods

 

[watsup]

Water vapor is more of a greenhouse gas than CO2. The global warming hoax has always been about wealth redistribution.

Rich nations owe reparations to countries facing climate disaster, says Pakistan minister

Sherry Rehman, the country’s climate change minister, insists rich polluters must pay their due as country is hit by devastating floods

www.theguardian.com

The conspiracy theory forum is elsewhere.

 

[lemmiwinx]

The conspiracy theory forum is elsewhere.

Could've fooled me.

 

[ttwtt78640]

OK, we have defined a problem. Now what?

 

[watsup]

OK, we have defined a problem. Now what?

Now we try to determine if there are ways to lessen the amount of CO2 being spewed into the air by humans.

 

[Galactic Spin]

Water vapor is more of a greenhouse gas than CO2. The global warming hoax has always been about wealth redistribution.

Two unrelated, irrelevant statements. And you imply the global scientific community is all lying. Such a sad, worthless post.

 

[Galactic Spin]

OK, we have defined a problem. Now what?

We should probably start by asking the scientists, no?

 

[Crovax]

OK, we have defined a problem. Now what?

Well we have a vague problem and that in itself is part of the problem. Every time they say if X amount of CO2 is released into the atmosphere the temperature will rise Y amount, in actuality the temperature has risen many times less than what was predicted. We know CO2 creates warming but we aren't able to fully understand how much impact it has.

 

[Crovax]

We should probably start by asking the scientists, no?

Which ones, the ones with a vested interest in keeping global warming an issue so they can continue getting grants and funding or the ones paid by the oil companies to say there is no warming?

 

[Galactic Spin]

Which ones, the ones with a vested interest in keeping global warming an issue so they can continue getting grants and funding or the ones paid by the oil companies to say there is no warming?

Sorry, I am talking about the real world, not denier noise machine fantasies. Good luck with your fantasies.

 

[Crovax]

Sorry, I am talking about the real world, not denier noise machine fantasies. Good luck with your fantasies.

The only denier here is you, good luck with your ignorance but it seems to be willful.

 

[Galactic Spin]

The only denier here is you, good luck with your ignorance but it seems to be willful.

Hahaha, cry it all out. Your bizarre fantasies carry no weight in educated circles, sorry.

 

[Crovax]

Hahaha, cry it all out.

You seem to be the one crying since you are unable to make a cogent argument

Your bizarre fantasies carry no weight in educated circles, sorry.

I have starting facts all you have done is whine like a small child and hurl insults. You have not fact, no argument and you can not handle the fact that you do not have the knowledge to even articulate your opinion.

 

[Galactic Spin]

You seem to be the one crying since you are unable to make a cogent argument

To respond to unevidenced, unargued, idiotic clams? What response do you think your idiotic nonargument deserves? Only mockery, sorry. And thas the only response your idiotic lies will ever get, in any educated circles.

 

[Crovax]

To respond to unevidenced, unargued, idiotic clams? What response do you think your idiotic nonargument deserves? Only mockery, sorry.

Once again you whine, cry and insult because you are unable to debate like an adult.

You think it's an idiotic claim that scientists are paid by oil companies to downplay the effects of fossil fuels on global warming, but it's a fact. Anyone who claims otherwise is either lying or a fool

 

[Galactic Spin]

Once again you whine, cry and insult because you are unable to debate like an adult.

There is nothing to debate. You made idiotic, unevideced, unargued claims. Welcome to the real world. Such idiocy is met with -- and deserves -- only mockery. It's not the world's job to carefully educate you and carefully argue against such brain vomit.

 

[Manc Skipper]

Could've fooled me.

It wouldn't be difficult, on this evidence.

 

[Galactic Spin]

We know CO2 creates warming but we aren't able to fully understand how much impact it has.

We should TOTALLY do nothing and wait around to find out. That's the only smart thing to do, really.

 

[Galactic Spin]

OK, we have defined a problem. Now what?

Ask the scientists. Then, go to the engineers with the goals and strategies listed by the scientists to get the tactics. Then, take all of that to policymakers.

 

[watsup]

The only denier here is you, good luck with your ignorance but it seems to be willful.

Do you know what psychological projection is?

 

[watsup]

You seem to be the one crying since you are unable to make a cogent argument



I have starting facts all you have done is whine like a small child and hurl insults. You have not fact, no argument and you can not handle the fact that you do not have the knowledge to even articulate your opinion.

What is causing the present global warming in the atmosphere of the Earth?