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srid  7mo ago (cafeamericainmag.com)   Edited 7mo ago   4097 thread views

The Vacuity of Climate Science

cafeamericainmag.com

There has been a lot of CW discussion on climate change. This is an article written by someone that used to strongly believe in anthropogenic global warming and then looked at all the evidence before arriving at a different conclusion. The articles goes through what they did.

I thought a top-level submission would be more interesting as climate change is such a hot button topic and it would be good to have a top-level spot to discuss it for now. I have informed the author of this submission; they said they will drop by and engage with the comments here!

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With regards to the atmosphere, the proposed greenhouse effect mechanism is thus that you have a, say, -18ºC surface in an atmosphere without any GHGs. Now, by adding CO2 to this atmosphere and thus doing nothing but changing the atmosphere's absorption and emission properties, the colder body (the atmosphere) results in a warming of the hotter body (the surface), in a tight feedback loop that essentially doubles the surface's energy level (as well as increasing the atmosphere's in the process).

To which I say: well that is not quite in direct accordance with the above sources on thermodynamics. I understand diagrams and graphs can be drawn and that the resulting steady-state is one in which the surface is still hotter than the atmosphere. But drawing a diagram does not make it so. All the laws of physics thus far have been determined experimentally, including the laws of thermodynamics.

Ok, so in the absence of any other energy flows, yes, this would violate the laws of physics. Heat can't flow from a colder to a hotter. But the sun is constantly adding energy to the surface in the form of radiation at a frequency that passes through CO2 without being absorbed, sort of "skipping past" the atmosphere, while the long-wave radiation given off by the earths surface (because it's at a much lower temperature than the sun) does get absorbed/re-released by CO2. So the heat is all starting at the VERY HOT sun, flowing to the medium hot earth, then out to the slightly colder atmosphere and cold of outer space.

So the energy flows, simplified, are:

(without atmosphere) Sun -> earth earth -> space

(with atmosphere) Sun -> earth earth -> atmosphere atmosphere -> earth and also atmosphere -> space

The proof that the GHE works can only reside in an experiment demonstrating the phenomenon. There are none. There have been none since the mechanism was first proposed two centuries ago by Fourier. Do you really think the climate alarmists would not have done one by now if they could have? Rather than do so, they have simply stopped trying (if they ever did) and merely started asserting that the science is settled. Yet they skipped over that crucial experimental step! This is not science, it is ideology, beliefs, and politics.

I mean, if you think that you can demonstrate, via experiment, that the greenhouse effect does not exist, nobody's stopping you. You could get millions of dollars from oil companies to prove that fossil fuels don't cause climate change. I don't want to be rude, but I think you are just misunderstanding the way that the energy flows and what that does.

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