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!
Jump in the discussion.
No email address required.
Notes -
I came here to post something similar. The short version is, while the article author says:
Heat DOES flow from cold to hot, it just must be less than the heat flowing from hot to cold, and that is what the referenced diagram shows.
The terminology can be tricky here. In the Fundamentals of Thermodynamics, 6th Edition (https://www.kashaninejad.com/uploads/4/6/7/6/46761445/fundamentals_of_thermodynamics__6th_edition.pdf):
This definition applies also to mutual radiation exchange between two bodies. From Gerlich 2007 (https://arxiv.org/pdf/0707.1161.pdf): "Clausius examines thoroughly, that the second law is relevant for radiation as well, even if image formations with mirrors and lenses are taken into account [178, 179].".
And from Clausius himself (https://www3.nd.edu/~powers/ame.20231/clausius1879.pdf): "Again as regards the ordinary radiation of heat, it is of course well known that not only do hot bodies radiate to cold, but also cold bodies conversely to hot; nevertheless the general result of this simultaneous double exchange of heat always consists, as is established by experience, in an increase of the heat in the colder body at the expense of the hotter."
Thus: the result of any exchange of energy as a result of a temperature difference, is that the hotter body gets colder and the colder body gets hotter: "an increase of the heat in the colder body at the expense of the hotter."
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.
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.
More options
Context Copy link
More options
Context Copy link