slug.com slug.com

7 3

Some educators seem to suffer from cognitive dissonance when describing the atmospheric greenhouse effect. The following video is an example. It's professionally produced, engaging, and judging by the comments, very persuasive.

The professor begins by describing the theory of the greenhouse effect with a simple model of the earth and its atmosphere. However, he goes on to attribute warming to the lapse rate. At one point, he even admits that real greenhouses don't work the way he described.

What is a viewer to think?

In any case, there is a flaw in the professor's analysis of the simple greenhouse model. There is indeed a violation of the second law of thermodynamics.

To see it, start with zero solar radiation and the earth and atmosphere in a very cold initial state. Then turn on the sun.

The earth will start to warm while the atmosphere remains cold. The temperature difference will cause heat to flow from the earth to the atmosphere, which starts to warm in turn. Eventually, the earth will warm up to -18°C. This is the highest temperature solar radiation can generate on earth in this simple model, and heating of the earth stops. Meanwhile, the atmosphere, which is still cooler, continues to absorb heat from the earth. Eventually, the atmosphere also warms up to -18°C, at which point heating of the atmosphere stops.

The system is in a steady state where the temperature of both the earth and atmosphere is -18°C and the outgoing radiation balances the incoming radiation.

Why would the earth need to warm up further to +33°C. More importantly, where would the extra heat come from. Solar radiation is maxed out, and the atmosphere is not at a higher temperature.

#GlobalWarming #ClimateChange

esumbar 4 Mar 31
Share

Be part of the movement!

Welcome to the community for those who value free speech, evidence and civil discourse.

Create your free account

7 comments

Feel free to reply to any comment by clicking the "Reply" button.

1

Not too many people know about this:

0

Has anybody searched for correlations between sunspot cycles and historically observed climate variations?

@esumbar

There have been climate swings before the Industrial Revolution, so we know there have to be other climate change mechanisms. Thank you for bringing up another possibility.

4

I don't remember a whole lot from my college science classes many years ago. But then again I don't really need to... not to address this global warming thing. A "simple greenhouse model" isn't going to cut it. Chaos Theory states that we will never be accurately able to predict the weather... much less long term climate trends.
Even if I'm wrong about that (and I may well be) it doesn't especially matter. The issue of whether there is man-made global warming and whether we can do anything to alter it are two separate issues.
The latter lends itself to much easier analysis. Scientists who adhere to warming theory have admitted that even if we were to do everything possible to combat global warming... we would see no discernible difference for 100 years.

So if Ocasio-Cortez is right (and she isn't) and we only have 12 years to fix this before Carbon-mageddon... then in all likelihood it's already too late. We might as well Carbon Party like it's 1999.
If we adopt less drastic measures to reduce our carbon sins... well then that's only a percentage decrease in our carbon emissions. As the world's population grows and nations like India and China industrialize further... the net effect is still an increase in carbon emissions. So the only thing that would truly make a difference is significant reduction in world population. And no one is talking about that one except the Viridian Idiot Savant Ocasio-Cortez. (I'm being charitable on the savant part.)

So far all of the short term predictions of global warming theory have been pretty inaccurate. And on multiple occasions scientists have been caught fudging the data.
At some point we will need to focus on renewable energy sources just because the oil reserves are not infinite. But at this point... the technology isn't there, and you can't protest or legislate it into existence.

I personally think hydrogen fuel cells are promising... but splitting water both safely and efficiently is still a problem.

Since in all of the accords China and India are blithely allowed to Party Carby... I tend to think this is more of a political movement than "settled science."
Also thus far I haven't seen any researchers reveal the big picture... let's show all of the world-wide data collated... including the data points that contradict the theory as well as the ones that support it. I haven't seen anything like that. But even if someone does present a comprehensive model of global warming... it doesn't matter. The climate is not going to change easily or quickly. Thermodynamic Inertia, bitchez.

2

Does "cognitive dissonance" mean the same thing as "talking out of ones ass" ? I think it does.

3

Maybe. I don't know. I also try not to waste time and effort worrying about things that can't be changed, and despite all the handwaving and alarmism... Nothing can currently replace fossil fuels, because almost nothing else has it's energy density that doesn't want to explode. Renewable energy is working pretty good if it makes energy 30% of the time and would take up enormous tracks of land, destroying or at least radically altering the natural habitat. Wind and solar is the worst possible solution for every conservationist minded person. What's more... It wouldn't matter if the USA ceased to exist and reverted back to it's natural state... China and India are full of poor people and they're not going to stop developing for silly global warming girls.

Nothing can stop it and it would be a human catastrophe if somehow they managed it. 4 out 5 people would be dead in a year. The forests destroyed and many species driven to extinction or near extinction including useful domestic species like cattle, horses, chicken.

I'm wagering nothing will happen. I'd wager that anything the government would do wouldn't work and would only hurt ordinary people while restricting freedom. Hopefully I have another 40 years left on this Earth and I'll either be a witness to the end of the world or I won't. Oh well, no one's gonna get out alive anyway.

@esumbar
Um ... do you really think they “believe it”?
I believe that it’s the same scam as “Global Cooling” was in the 60’s and I’m relatively sure they “know it” ...

Excellent summary of the situation.
Everyone talks about the weather but no one does anything about it used to be a saying.
Now everyone talks about doing something about the climate... but no one knows how to do anything about it.

2

Can anything in the above explain how why Mars is also getting warmer

Could it be that it has little to do with the "Greenhouse Effect" and more about how that nuclear inferno called the sun might be warming things in it's orbit more for whatever reason?

2

I feel that some of the most emotional,angry and staunch supporters of the man caused climate change theory know little of the specifics of the theory

Write Comment
You can include a link to this post in your posts and comments by including the text q:26471
Slug does not evaluate or guarantee the accuracy of any content. Read full disclaimer.