Slashdot Mirror
Ancient Climate Change Triggered Warming That Lasted Thousands of Years (phys.org)
An anonymous reader quotes a report from Phys.Org: A rapid rise in temperature on ancient Earth triggered a climate response that may have prolonged the warming for many thousands of years, according to scientists. Their study, published online in Nature Geoscience, provides new evidence of a climate feedback that could explain the long duration of the Paleocene-Eocene Thermal Maximum (PETM), which is considered the best analogue for modern climate change. The findings also suggest that climate change today could have long-lasting impacts on global temperature even if humans are able to curb greenhouse gas emissions.
Increased erosion during the PETM, approximately 56 million years ago, freed large amounts of fossil carbon stored in rocks and released enough carbon dioxide, a greenhouse gas, into the atmosphere to impact temperatures long term, researchers said. Scientists found evidence for the massive carbon release in coastal sediment fossil cores. They analyzed the samples using an innovative molecular technique that enabled them to trace how processes like erosion moved carbon in deep time. Global temperatures increased by about 9 to 14.4 degrees Fahrenheit during the PETM, radically changing conditions on Earth. Severe storms and flooding became more common, and the warm, wet weather led to increased erosion of rocks. As erosion wore down mountains over thousands of years, carbon was released from rocks and transported by rivers to oceans, where some was reburied in coastal sediments. Along the way, some of the carbon entered the atmosphere as greenhouse gas.
Increased erosion during the PETM, approximately 56 million years ago, freed large amounts of fossil carbon stored in rocks and released enough carbon dioxide, a greenhouse gas, into the atmosphere to impact temperatures long term, researchers said. Scientists found evidence for the massive carbon release in coastal sediment fossil cores. They analyzed the samples using an innovative molecular technique that enabled them to trace how processes like erosion moved carbon in deep time. Global temperatures increased by about 9 to 14.4 degrees Fahrenheit during the PETM, radically changing conditions on Earth. Severe storms and flooding became more common, and the warm, wet weather led to increased erosion of rocks. As erosion wore down mountains over thousands of years, carbon was released from rocks and transported by rivers to oceans, where some was reburied in coastal sediments. Along the way, some of the carbon entered the atmosphere as greenhouse gas.
There is a Wikipedia entry:
WorldNetDaily (WND) is an American news and opinion website and online news aggregator which has been described as "fringe" and far right[6] as well as politically conservative.[7] The website is known for promoting falsehoods and conspiracy theories.[16]
I'm going to go out on a limb and say they are not a source of reliable information.
Anons need not reply. Questions end with a question mark.
Ned Nikolov, Ph.D.
I looked up who this guy was and oh boy.
Scientists published climate research under fake names. Then they were caught.
Excerpt about the paper.
The withdrawn study “is just a curve-fitting exercise of five data points using four free parameters and as many functional forms as they could think of,” Schmidt, an expert in atmospheric climate modeling, said in an email. Like the previous pseudonymous research, “it too has nothing fundamental to add.”
He added, “The authors’ insistence that they are ‘contradicting mainstream theory’ is just delusional self-aggrandizement.”
Anons need not reply. Questions end with a question mark.
There were no Neanderthals 56 million years ago.
Our direct ancestors from that epoch were lemurs.
From https://www.wnd.com/2017/07/st...
Eventually, their true identities were discovered, and so, the journal, Advances in Space Research, retracted the paper, though the editors acknowledged that the retraction was “not related to the scientific merit of the study.”
Nikolov told WND that the main reason for using fake names was federal policy under the Obama administration.
“I was told by my superiors that I could not publish anything on climate as a government employee,” he said, adding that he works for the U.S. Forest Service but that the research “was done in my private time, has nothing to do with my work, and does not represent the position of my employer.”
It'd be nice if you were right. Unfortunately not. CO2 is indeed potent compared to O2 and nitrogen for its warming. I mean, CO will kill you at trace amounts so it's not like a trace gas isn't known to have a strong effect.
Water vapour does cause warming too but has 2 key differences. First it was already there, we didn't upset the balance by adding to it, so it's not forcing but a feedback from the forcing. Second it is radiative in both directions, it can also cool, whereas CO2 is more opaque to the heat at the wavelengths leaving Earth.
To your point on the benefits of more CO2, the greening of the planet already happened and it did indeed offset some of our emissions. However, plants can only absorb so much extra, they need other nutrients and fresh water and have physical limits. We've long passed that one, sorry.
How about you try to prove what the poster said was wrong
How many times do I have to prove him wrong before it's reasonable to assume what he's saying is bullshit? 10? 20? It's probably been that many by now.
In the real world if you act like a denialst repeatedly then it's a reasonable assumption that something linked to from an ovbiously incrediably biased source is clearly denialist bullshit.
You know this too and that makes you as bad as he is. You very well know that it's easier to spew bullshit to rebut it. However you won't admit to that because you want your bullshit to "win".
SJW n. One who posts facts.