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Math doesn't lie, not in any form. However, people often try to use it to justify their lies.. and rely upon other's poor understanding to make the lies stick._sabotage_ wrote: If you study physics, then you will see that math doesn't lie.
Yes, the system wants to come into a natural equilibrium between the energy leaving the system (infrared radiation from the Earth's surface) and the energy entering the system (incident solar radiation). The greenhouse gases in the atmosphere would just radiate all that extra heat away into space eventually, if the Sun weren't constantly feeding energy into the Earth's thermal system. Since it is doing so, there is an extra source of heat that is always effectively trapped. Emissivity being unequal to one requires this. You basically agreed as much when you posted earlier that the effect of carbon dioxide and water is to raise the equilibrium temperature of the Earth by more than 30 degrees. And this is true -- if we didn't have all that water in the atmosphere, it would be a lot colder on Earth. If you agree with that, why is it difficult to believe that adding more of the greenhouse gases results in even more warming?_sabotage_ wrote:I would like to visit your planet one day Mets. See, here on Earth, the monopoly on greenhouse gases is held by water vapor. And it does allow for a slow passage of energy through it, but doesn't as you say "trap it" because in this universe thermodynamics means that it is constantly trying to return to equilibrium at each possible moment.
A quick calculation indicates, to me, that the evaporation of water releases 540 calories per gram. If we assume that your volume of water vapor is at STP, then the water vapor occupies one liter for every 0.8 grams. There are 1000 liters in a cubic meter, so the mass of that water is 4 x 10^17 g. Therefore the energy released in that process is approximately 9 x 10^20 J. 1% of that is 9 x 10^18 J. Now, an individual carbon dioxide molecule will absorb at a wavelength of roughly 10 microns, and when this is converted to a photon energy we're talking 4.59 x 10^38 CO2 molecules needed, if I make the absurd assumption that every molecule absorbs exactly one such infrared photon. Now, the number of molecules in the atmosphere is 10^44 (I cheated on this one and Googled it since I didn't feel like doing another calculation). This means that we'd need a concentration of 5 parts-per-million to trap that energy (compare to the current concentration of about 400 ppm). We'd need more in reality, since the heat released by the vaporization wouldn't all be emitted at the CO2 transition wavelengths, but that's harder to calculate. I also cheated a little because the typically cited ppm is with respect to volume and not number density, but whatever, I'm tired of this calculation.Let's see if you can answer a question:
505,000km3 of evaporation occurs at 600 cal per gram, what amount of carbon dioxide is required in the atmosphere to "trap" 1% of that energy through the greenhouse effect?
One of the things you learn when studying physics, as I have, is that an answer is meaningless if you're not asking the right question. I have no idea why you asked me the above question -- i.e. what significance 505,000 km3 has.If you study physics, then you will see that math doesn't lie.
Actually, gasses of all types have piss-poor conductivity. And piss-poor as it already is, it gets even worse as pressure drops. So while at sea level you can still talk about significant effects due to conductivity in the atmosphere, in the upper atmosphere it becomes completely negligible. So negligible, for instance, that although parts of the ionosphere have temperatures in the hundreds of degrees, they would not feel warm to the touch if you could touch them, because the rate of transfer would be too low for us to perceive._sabotage_ wrote:I would like to visit your planet one day Mets. See, here on Earth, the monopoly on greenhouse gases is held by water vapor. And it does allow for a slow passage of energy through it, but doesn't as you say "trap it" because in this universe thermodynamics means that it is constantly trying to return to equilibrium at each possible moment. This is not a theory, it's a law. And those predominantly water vapor greenhouse atmospheric warmth is whisked away at all possible moments by the more conductive materials present in the atmosphere, of which 99.96% is not CO2. Carbon being warmed by infrared rays reflecting from a monkeys ass are still subject to these same laws, still make up that meager percentage and are still surrounded by other particles whose physical properties state that they must drain them of their energy in an environment that encourages transfers.
False. The empirically measured emissivity of clouds is more like one half. Emissivity is not a statement about how much of the energy is re-radiated. All of the energy is re-radiated if you're in an equilibrium system, for example; otherwise, the energy content is constantly rising. Emissivity is a statement about how you re-radiate that energy relative to a blackbody of the same temperature. The basic physics here is that an object with emissivity < 1 will initially absorb all of the Sun's energy and then re-radiate some fraction of it, with the rest staying in the system. Since there is extra energy, the system heats up. But a hotter object emits more total thermal power. So there will be an adjustment happening until we're releasing enough energy (at the inefficiency represented by the emissivity) to compensate for what the Sun is giving to us. The net effect is that we still catch and re-radiate all of the heat the Sun is giving to us, but that the surface of the Earth must be hotter to make this happen. This is how you can demonstrate the physics of global warming in a single equation, using the Stefan-Boltzmann equation.The emissivity of clouds is 1, that is they catch and reradiate all their heat,
Clouds absorb very little of the incident solar radiation. In fact, clouds are largely responsible for increasing the albedo of the Earth (the amount of sunlight reflected instead of absorbed). Therefore clouds have the potential to contribute negative climate forcing, although there are other cloud effects that may negate this.and yet in your equation you state that clouds decrease emissivity, which is true, but probably not in the way you think because the thing which makes it true is the very thing which makes global warming false. The clouds absorb all the incidence and it is then wicked away through entropy.
This has nothing to do with entropy. Please stop using that term like it's meaningful here, unless you're going to discuss convection. Entropy is not a physical mechanism; it's just a useful way of understanding why some heat transfers work the way they do.That means that even though it adds to the emissivity of a two dimensional view of the earths surface, we live in a 3d world and it doesn't reach us and we instead count the shadow it leaves behind. But what does this tell us? That atmospheric entropy can negate the effects of much larger systems that CO2 can ever hope to represent.
If you don't understand the importance of infrared wavelengths, I urge you to read more about the spectrum of electromagnetic radiation. Infrared radiation (heat, essentially) is fundamentally the same as visible light -- it just has a longer wavelength so we can't see it. But that's what night vision goggles do, for example.But I would like to ask you a question about these special wavelengths that you know so much about.
Don't take my word for it if you don't want to. The information is widely available.I'll take for granted that CO2 takes in the special wave length that would otherwise pass through it,

The longer wavelength is the infrared radiation. On that chart above, you can see that carbon dioxide does nothing to radiation intensity in the visible wavelength region (between 0.4 and 0.7 microns, roughly). Almost all of the Sun's energy is in the visible part of the spectrum, so that light passes through the atmosphere easily. When it's absorbed and re-radiated at longer wavelengths, that's when carbon dioxide becomes important.that entropy wouldn't then wick that heat away, and that the amount of carbon present has a chance of creating such insulation. What about frequencies of a higher wavelength? CO2 has a very low emissivity, almost as low as aluminum, which they have been using to reflect solar incidence, how much solar incidence does it reflect compared to what it absorbs as infrared and what does that mean in real numbers, ie rise/fall in global average temperature?
It can't be an "error" if the question was vague enough to permit such a choice. I interpreted "505,000 km^3 of evaporation" to mean "505,000 km^3 of water vapor." If that's not what you meant, that's ok, but I'm not your calculator. If you have a point to make, please make it.You see you made a big error in your calculation, you took the volume of vapor, not water. That is you made water 1000 g per liter and made it 0.8 grams per liter, meaning you were of by a factor of 1250 in your calculation, perhaps you would like to try again.
Ah and to clarify, what I'm saying is that the greenhouse effect does work but not in the way you think it does and that carbon dioxide is of negligible importance. Entropy is the common goal and external energy can create a balance against it being achieved. But it is similar to how old layers of skin rise to the top as new layers grow underneath, that is, the dead layer is going to be lost to entropy no matter what, it's a question if the new skin is ready to meet the surface, has enough energy been added to mitigate the loses?
This is like comparing apples and orange juice. Liquids of all kinds have strong cohesive forces, simply because they are liquid. If they evaporate and become a gas, that effect disappears. So comparing a liquid to a gas here is literally meaningless.Water has many unique qualities, and one of these are strong adhesive forces. This means that water sticks together. If you visits the tropics on a very humid day, you can see the walls covered with condensation, or if you visit Seattle, you can see something called rain.
On the other hand, you can take as high a concentration of CO2 as you like and it will not. What this means is that water has the inherent ability to decrease its surface area to volume ration, while CO2 does not. The smaller the surface area to volume, the greater the resistance to entropy. Water's is good, CO2's is non existent in a gas form.
A word about this. I have a master's degree in physics and my doctoral dissertation work is in computational fluid dynamics. So while I'm far from an expert on atmospheric science, I know a little about the basic physics. Enough to know that Dukasaur has an idea of what he's talking about here. If you want to have a serious conversation with people, it would help to stop implying that people with far more education than you on this subject, are uneducated. I have no desire to continue this conversation until you apologize for that comment. He's just trying to help you understand the science, and you're treating him awfully in response._sabotage_ wrote:I'm sorry you received such a poor education, Duke.
Napoleon Ier wrote:You people need to grow up to be honest.
Cherrypicking sentences out of scientific documents to make a point? Perhaps this should be avoided. Let's take a look the entire paragraph from which that sentence comes (emphasis mine):_sabotage_ wrote:According to the IPCC:
“If SRM were terminated for any reason, there is high confidence that global surface temperatures would rise very rapidly to values consistent with the greenhouse gas forcing.”
SRM means solar radiation management, chemtrails. To which there is a patent, are easily observable, but have no legal basis and therefore are unregulated.
That which is before your eyes, you are blinded to.
So, read in context, that sentence actually says that if Solar Radiation Management were occurring, and we stopped it, the temperature would quickly rise to the levels they would have in the scenario where we didn't do SRM.IPCC AR5 wrote:Methods that aim to deliberately alter the climate system to counter climate change, termed geoengineering, have been proposed. Limited evidence precludes a comprehensive quantitative assessment of both Solar Radiation Management (SRM) and Carbon Dioxide Removal (CDR) and their impact on the climate system. CDR methods have biogeochemical and technological limitations to their potential on a global scale. There is insufficient knowledge to quantify how much CO2 emissions could be partially offset by CDR on a century timescale. Modelling indicates that SRM methods, if realizable, have the potential to substantially offset a global temperature rise, but they would also modify the global water cycle, and would not reduce ocean acidification. If SRM were terminated for any reason, there is high confidence that global surface temperatures would rise very rapidly to values consistent with the greenhouse gas forcing. CDR and SRM methods carry side effects and long-term consequences on a global scale. {6.5, 7.7}
Napoleon Ier wrote:You people need to grow up to be honest.
Phatscotty wrote:We are in the dark ages of climate change science, and the Progressives have built themselves a Church of force
I tried to be patient with you, but you have no idea what you're talking about. The comments you are making about climate science and climate modelling either A) have no basis in scientific fact or B) are simply incorrect assertions about what climate scientists do. If you are really interested in learning about the subject, then it might be wise to listen to someone who actually knows about fluid dynamics and thermodynamics and pay attention when you are told that you are wrong. If you instead discard everything they say, it demonstrates that you aren't willing to learn -- you just want to score points in an internet debate. I'll come back to this discussion if and when you are ready to actually converse._sabotage_ wrote:Caught in a lie?
Let's see what you have said: geoengineering has no scientific basis.
IPCC, the international scientific body for climate change says, it does.
Hmm, who's lying?
Just like the climate change scientist assumed that outgoing radiation would be the same during warmer temperatures and then refuse to change their models when it is proven wrong. How would this data effect the models?
If the data were entered correctly, then the current expanding rate of CO2 being put into our atmosphere would show an increase in temperature of 0.5 C in 130 years.
Why don't they input the actual data? They have data of their own of CO2 in a hermetically sealed system that they prefer instead. If you want to cherry pick data to try to prove a point, then they've given you a prime example, that you unwittingly support.
I am deeply saddened that someone with a degree in fluid dynamics would lend his/her support to this theory, or this "scientific" use of data.
A climate change example of fluid dynamics is the thermohaline effect in the oceans. Slight temperature and compositional gradients combine to drive heat to cold. Why this wouldn't be happening in the atmosphere, the assumption of the climate change extremists, is beyond me. But that it is happening, is consistent with the data on outgoing radiation.
So the scientific law of entropy, the real world data showing it occurring and comparable examples should all be ignored for what happens in only laboratory existent circumstances?
I never let my schooling interfere with my education, did you?
I have no anger. Only disappointment that I have failed to educate. It's possible that you're the next Galileo or Einstein and you understand something that the rest of us do not... but I'm not betting on it._sabotage_ wrote:I hate those guys. I mean, using scientific data to dispel popular misconception in the face of being told they're wrong?
I think they failed to make a clear enough example out of Galileo. Gives some of these upstarts the idea that fact can overcome propaganda. If it were me, I would have silenced him for good. I mean his unwillingness to learn from those around him was outright scandalous. How are we to get ahead with people like him throwing truth around so persistently?
Your plea to authority, Mets, has fallen on deaf ears. If you had, like I did with your scientific data, discuss and show its correlating effect within the larger system in which it exists, then you could claim some understanding. But you have displayed how isolated your knowledge is from the larger system in which it is taking place. You have ignored scientific law for theory, proven data for laboratory data, and made way too many pleas to authority and majority to be taken seriously.
In the words of Bob, you can fool some people sometimes, but you can't fool all the people all the time. Enforcing your deliberate ignorance will cause you cognitive dissidence. That is, about this point in my post, you should be feeling an anger which is not based on my words, but based on your reaction to them.
That's not what entropy is. Entropy is a measure of disorder, or information content, in a system. What you're trying to discuss is the second law of thermodynamics, which says that entropy increases in any irreversible process._sabotage_ wrote: For those who do not quite get what entropy is, it is: The tendency for all matter and energy in the universe to evolve toward a state of inert uniformity.
How about this, let's make a bet. If you can find a single well-known physics textbook that defines entropy (not any properties of systems with entropy, or the second law of thermodynamics) as "the tendency for all matter and energy in the universe to evolve toward a state of inert uniformity," I will concede the discussion. If you can't, then admit that your knowledge of physics is cursory at best, and listen carefully to the people who have studied it carefully._sabotage_ wrote: Physics textbooks, professors and dictionaries don't matter, since they all give the definition of entropy as I stated, which is wrong, and therefore doesn't matter. The fact that it explains the entire system doesn't matter.
OK, provide me the name of the textbook and I'll look it up for myself. Or links for either of these other sources you're providing._sabotage_ wrote:Don't be shy, Google won't hurt you, I got that from an online textbook, which I the same as in my textbook, but I couldn't be bothered to transcribe, just copy pasted and the same as described by the Head of the Physics department at Dalhousie University and the University of Ohio.
The only thing you need to do to appear knowledgeable is to avoid making statements that are blatantly false.On the other hand, I don't have the same intention as you, that is I don't want to use confusing principles to appear knowledgeable
The comparison between carbon dioxide and the glass of a greenhouse is very valid when it comes to the heating effect. You are correct to say that a greenhouse cannot stay warm forever; eventually it will cool off at night. This is because the room it's in will eventually transfer its heat to the glass, raising its temperature, and the glass will then transfer its heat to the outside air (by conduction, say). The comparison breaks down when you realize that there is no air outside the atmosphere to transfer heat to. So the only way for the atmosphere to cool off after the greenhouse effect is to radiate that energy back into space. But that is a very inefficient mode of heat transfer, and the Sun keeps pumping heat into the system every day, so the atmosphere never has a chance to cool off.Same as if you beak ass the windows in a greenhouse, the glass still let's in the solar incidence and taps the outgoing in fared, but it has no barrier and would not provide a lag to escaping heat.