About the Glaciation being "the runaway ice sheet feedback"
I see, you support the notion the Glaciation is "the runaway ice sheet feedback".
But why it is a "runaway feedback" for you? When there is less solar energy absorption by the global surface area, Earth's surface gradually cools and the ice sheet grows...
There is not any feedback... Not any positive feedback...
Feedback means the existence of ice sheet makes it inevitable to continue growing - the runaway!
When ice covers earth it behaves in the negative feedback pattern, because ice sheet keeps earth from emitting more IR EM energy.
Open water's emissivity is higher than snow covered ice sheet's.
When ocean is covered with ice, it protects earth from the intensive cooling, thus, by ice cover Earth saves energy and being kept warmer.
There is not a positive feedback from the ice sheet cover. The feedback from ice sheet is negative.
Earth is a warmer faster rotating planet
July 19, 2021
"We do not have a warmer faster rotating planet".
An example of a faster rotating planet which is a warmer planet is Earth vs Moon.
Moon, because of the lower Albedo (a=0,11) than Earth’s Albedo (a=0,306), Moon receives 28% more solar energy than Earth…
Nevertheless, Moon is considered a much colder planet than Earth.
Moon’s rotational spin is 29,5 times slower than Earth’s. And Moon’s average surface specific heat is 0,19 times of that of Earth’s.
Moon has almost five times lower average surface specific heat than Earth. Because Moon’s surface consists of lunar regolith (soil), and Earth’s surface consists of water (ocean).
Both those physics data (the rotational spin and the average surface specific heat) are measured evidence.
What we did here is to compare two celestial bodies’ the average surface temperatures… The method we use is the “Planet Surface Temperatures Comparison Method”.
Earth has never emitted those certain ranges of the IR spectrum...
July 29, 2021
"The same satellite data you use to benchmark your calculation also shows that Earth’s atmosphere is highly absorbing in certain ranges of the IR spectrum (see the spectrum here
How do you explain this contradiction?"
Yes, I visited the Link you provided. There is not a contradiction with the data.
Graph shows the measured Earth emissions in certain ranges of the IR spectrum... Earth's atmosphere does not absorb what is shown in the Graph.
It is a product of a mistaken comparison of the measured IR spectrum emitted by the surface with the alleged blackbody emission curve at 288K.
Earth's surface does not have a uniform surface temperature of 288K. Thus any measured IR emissions cannot be compared with that curve.
Also it is a question what those measured emissions (the so called atmospheric windows) represent. Are they average globe emissions, are they day-time emissions?
What they are?
Earth’s atmosphere highly absorbing in certain ranges of the IR spectrum narrative is fictions, because Earth has never emitted those certain ranges of the IR spectrum.
One cannot measure IR radiative emission that is not emitted... But that does not make it being absorbed by atmosphere.
It was simply deduced those certain ranges of the IR spectrum were absorbed by the Earth's atmosphere, because they were comparing the Earth's actual emission ranges with the blackbody uniform 288K Stefan-Boltzmann emission law curve.
It was simply deduced that those certain ranges of the IR spectrum were absorbed by the Earth's atmosphere.
It happened so, because it was wrongly compared the Earth's actual emission ranges with the blackbody uniform 288K Stefan-Boltzmann emission law curve.
When certain ranges of the IR spectrum are not there... it is a confirmation planet does not emit as a blackbody.
Venus' atmosphere has a strong Greenhouse Effect on the Venus' mean surface temperature.
August 4, 2021
"Basically it appears you admit that your model cannot explain Venus and it does require a GHE.
Then how is it you can call it a New Universal Law, if it does not work for Venus?"
I never said there is not GHE. What I have shown is that Earth's atmosphere is very thin and the greenhouse gases content is very small, it is trace gases in a very thin atmosphere...
I have calculated Venus' surface temperature theoretically using the New Equation, by adding in the equation the greenhouse gases' density factor.
The result is very satisfactory.
I have also theoretically calculated by the use of the greenhouse gases' density factor the mean surface temperatures for Earth's and Titan's atmosphere and the results were again very much satisfactory.
Please visit the page in my site about Venus’ 735K globally averaged surface temperature.
Thank you for asking about a very important aspect of the theme.
Link to the page:
I never said Earth's surface emits uniformly at the uniform surface emission temperature of 288K
August 8, 2021
" You find the Earth emits ave 112 W/m^2.
According to SB law. much much higher, ~ 387 W for an airless sphere with Earths actual T distribution.
The atmosphere and GHE reduces that to 240 W/m^2."
I never said Earth emits uniformly with IR EM emission intensity of 112 W/m^2.
I never said Earth's surface emits uniformly at the uniform surface emission temperature of 288K.
In the opposite,
But if one considers Earth as a uniform IR emitter at the uniform surface emission temperature of 255 K, then Earth should emit 240 W/m^2… as a... flat surface in full accordance with the classical Stefan-Boltzmann emission law.
Equation is based on known laws, but also it is based on New laws
August 21, 2021
"Christos – you apparently “discovered” the equation. Could you please derive it from known laws?"
Equation is based on known laws, but also it is based on New laws I have discovered.
The New laws are based on known laws. Those New laws are not accepted as known laws yet…
Example: the "Planet Surface Rotational Warming Phenomenon" is not accepted as a known law yet…
Everything I have discovered I explained the best I can in my site:
Thank you for asking.
An irradiated body cannot be considered as a classical blackbody in principle
September 21, 2021
"...I think the overall maths comes down on the side that it does affect the average temperature of a planet.. The faster a planet rotates the closer it approximates an ideal black body and hence the closer it approaches to the ideal average emitting temperature of the SB law.
Note; any rotation energy is separate to and does not add any new energy to the incoming and out going energy which remains the same. The planet cannot get any hotter due to the rotation, it merely approaches the ideal average temperature which it cannot go above."
The planet old blackbody Te equation.
The planet old blackbody equation was the first attempt to theoretically estimate the planetary average surface temperatures.
Te = [ (1-a) S /4σ ]¹∕ ⁴
The equation calculates planet uniform surface temperature, which is called planet surface effective temperature (Te). It is actually not an average surface temperature, but it was accepted like, for the sake of the simplicity of approximation.
The equation used the Stefan-Boltzmann emission law, thus assuming planet surface as a blackbody surface with uniform surface temperature. It was an approximation using the average year measured solar flux' intensity on the planet lessened by the measured average planetary Albedo.
A very rough approximation, but an approximation based on measured data. The planet old blackbody equation was the first attempt to theoretically calculate the planet average surface temperatures.
The blackbody surface estimations of planetary average surface temperatures were far from being precisely theoretically calculated planet average surface temperatures, which is obvious when comparing the theoretically calculated temperatures with the actually measured planet average surface temperatures.
The planet old blackbody Te equation should be credited for establishing the scientific consensus that planet average surface temperature can be theoretically calculated by the use of the known Stefan-Boltzmann emission law and the measured solar flux and planetary Albedo.
It was the first step in the right direction! But it was not complete. For forty years the equation became widely used and the planet surface effective temperature (Te) became a synonymous of the planet average surface temperature (Tmean). In the scientific papers Te is referred to as the planet average surface temperature, which leads to a great confusion...
First we should learn to calculate the Te correctly. We should use the
Φ(1 - a)
coupled term when calculating the planetary radiative energy in
Φ(1 - a)S*πr ²
The Te correct is as follows
Te.correct = [ Φ(1-a) S /4σ ]¹∕ ⁴
When calculating the planets' Te correctly we would be able to see that there are planets with Te>Tmean and there are planets with Te<>
An irradiated body cannot be considered as a classical blackbody in principle
Planets cannot be considered as blackbody surfaces
October 4, 2021
"All bodies which absorb all the energy that falls on them act as black bodies. You recognize this in your equations when you take out the albedo component [ the reflected energy]. Thus you treat all your planets as black bodies whether you admit this or not."
Blackbody surface has some constant temperature because of the inner body's outgoing to the surface energy.
The origin of this energy may be because of body having an inner source of energy, or body having accumulated a large enough amount of energy as a result of previous heating.
And blackbody has uniform surface temperature.
When surface interacts with incident radiative energy it does not behave according to the Stefan-Boltzmann blackbody emission law - it is an interaction and emission at the same instant.
Also we should notice that planet is solar irradiated from one side only, and even on the solar lit hemisphere the insolation intensity is not evenly distributed because of the planet's spherical shape.
Not to forget, planet rotates...
Thus we conclude: planets cannot be considered as blackbody surfaces.