What determines earth's temperature (1 Viewer)

[Tpaine]

The global temperature of earth or any planet in the solar system can be calculated using the Stephan-Boltzmann equation with the following variables.

1. Distance from the sun
2. Albedo
3. Greenhouse effect

Is that statement accepted by those at this site and if not, what is proposed as any other factor that controls the temperature of earth or any other planet?

 

[Moot]

The global temperature of earth or any planet in the solar system can be calculated using the Stephan-Boltzmann equation with the following variables.

1. Distance from the sun
2. Albedo
3. Greenhouse effect

Is that statement accepted by those at this site and if not, what is proposed as any other factor that controls the temperature of earth or any other planet?

An equilibrium of radiated energy from the sun heats the earth up and the release of radiated energy from the earth cools it down is what sets the earth's temperature. Why do you ask?

 

[KevinKohler]

The sun.

 

[ttwtt78640]

A thermometer works for me.

 

[joG]

The sun.

So warm. Wonderful!

 

[Tpaine]

If those are the only things that control the earth’s temperature and we know the sun’s radiation has been decreasing then the temperature rise must be due to greenhouse gases.

 

[DaveFagan]

The global temperature of earth or any planet in the solar system can be calculated using the Stephan-Boltzmann equation with the following variables.

1. Distance from the sun
2. Albedo
3. Greenhouse effect

Is that statement accepted by those at this site and if not, what is proposed as any other factor that controls the temperature of earth or any other planet?

Conversion of the Planet's liquid resources to Heat. Example, burning 100 million barrels of earth temperature (49-50 degrees) pertrofuels at 1200-2000 degrees, daily. Farenheit.
Conversion of the Planet's gaseous resouces at 1200-2000 degrees farenheit. Natural gas and greater quantities than oil.
Stimulation of the Planet's solid resources, nuclear, to emit heat at 5000 degrees farenheit.
These additional heat emissions will increase the Greenhouse Effect.

 

[Lord of Planar]

The global temperature of earth or any planet in the solar system can be calculated using the Stephan-Boltzmann equation with the following variables.

1. Distance from the sun
2. Albedo
3. Greenhouse effect

Is that statement accepted by those at this site and if not, what is proposed as any other factor that controls the temperature of earth or any other planet?

It's not that simple. The first two criteria apply to solid objects. The third applies when you add a gaseous atmosphere. A fourth would be the surface liquids we had, called oceans. A fifth would be the liquids and solids we have in the atmosphere. You can go an and on to things that affect this.

 

[Lord of Planar]

The sun.

The sun is simply the source of more than 99.99% of the energy. There is also tidal forcing and nuclear breakdown that generates heat. Ass the sun varies, so does the results of the basic Stephan-Boltzmann equation.

However, what you never see the alarmists and warmers acknowledge is that changes in the sun affect all the other significant forcing values. Increase solar radiation, and the greenhouse effect increases. Decrease the solar radiation, and the greenhouse effect decreases.

 

[Lord of Planar]

If those are the only things that control the earth’s temperature and we know the sun’s radiation has been decreasing then the temperature rise must be due to greenhouse gases.

Except the ocean system produces hundreds of years of thermal equilibrium in rather complex manners. It appears the simple lag time is somewhere between 50 to 100 years, and the sun peaked in 1958.

 

[Tpaine]

Conversion of the Planet's liquid resources to Heat. Example, burning 100 million barrels of earth temperature (49-50 degrees) pertrofuels at 1200-2000 degrees, daily. Farenheit.
Conversion of the Planet's gaseous resouces at 1200-2000 degrees farenheit. Natural gas and greater quantities than oil.
Stimulation of the Planet's solid resources, nuclear, to emit heat at 5000 degrees farenheit.
These additional heat emissions will increase the Greenhouse Effect.

That's true but the amount of heat added to the earth through burning is pretty insignificant compared to the heat from the sun and the amount retained by greenhouse gases.

 

[Tpaine]

The sun is simply the source of more than 99.99% of the energy. There is also tidal forcing and nuclear breakdown that generates heat. Ass the sun varies, so does the results of the basic Stephan-Boltzmann equation.

However, what you never see the alarmists and warmers acknowledge is that changes in the sun affect all the other significant forcing values. Increase solar radiation, and the greenhouse effect increases. Decrease the solar radiation, and the greenhouse effect decreases.

Yes but the change in the sun's radiation is small so the Stephan-Boltzmann equation is practically constant. The sun's radiation is measured with satellites and the changes are not enough to change the temperature by much whereas greenhouse gases have changed by a relatively huge amount.

 

[davidgarcia]

Yeah, the sun delivers the greatest proportion of heat to earth, but the earth has atmospheres too that regulates the temperature. Not to mention the ice poles from north and south , the earth's core volcanic content,and the acid of the ocean.

 

[Tpaine]

Except the ocean system produces hundreds of years of thermal equilibrium in rather complex manners. It appears the simple lag time is somewhere between 50 to 100 years, and the sun peaked in 1958.

Solar radiation increased about 0.5 watts/m^2 from 1880 to 1960 then decreased by about the same amount to the present while the temperature went up. That amount of change in heat would change the temperature less than 0.10 degree. So even if the lag time is long it would not affect the temperature.

 

[Tpaine]

Yeah, the sun delivers the greatest proportion of heat to earth, but the earth has atmospheres too that regulates the temperature. Not to mention the ice poles from north and south , the earth's core volcanic content,and the acid of the ocean.

But the atmosphere doesn't change the heat content except for the greenhouse gas effect. The same for the ice poles, earth's core volcanic content, and the acid of the ocean.

 

[Media_Truth]

The sun is simply the source of more than 99.99% of the energy. There is also tidal forcing and nuclear breakdown that generates heat. Ass the sun varies, so does the results of the basic Stephan-Boltzmann equation.

However, what you never see the alarmists and warmers acknowledge is that changes in the sun affect all the other significant forcing values. Increase solar radiation, and the greenhouse effect increases. Decrease the solar radiation, and the greenhouse effect decreases.

Again, Mr. Expert here knows more than the Climate Scientists of the world. "You never hear them acknowledge this and that..." NEVER! They simply overlooked it. Or better yet, there is a conspiracy.

 

[lit]

Forget about the greenhouse. A cold fluid like air at -18C doesn't heat the earth.
Try this:

Hemisphere:2(πr²)
(V)Volume:4/3(πr³)
TSI:1360.8W/m²

The shell of the atmosphere surrounding the solid ball, two volumes (V). Irradiated on hemisphere.

(TSI/V²)/2=383W/m², 286.7 kelvin.

Effective temperature, from heat transfer to surface with inversen square law.

TSI-((TSI/V²)/2)=4*244,5W/m², 256 kelvin.

The true blackbody emits TSI/4=340.2W/m². The difference to what earth emits is exactly 95,68W. Thsi is where it get interesting. According to the first law, the difference is work, W, in ∆U=Q-W. Where Q is the emitted heat. There is only one force connected to the system, gravity. Check what the square root of 95,68W is.
Exactly the value of surface acceleration given by NASA.

Then, have a look at this:
Electric Field, Spherical Geometry

Then we can do this:

TSI/(4/3)=4/3*8g² and surface temperature is equal to gravity as thermal resistance in units Nm²=4g². Tropopause temperature is equal to 4/3*g².

This is gauss law for gravity. I think it is safe to say there is no greenhouse effect.

 

[Lord of Planar]

Yes but the change in the sun's radiation is small so the Stephan-Boltzmann equation is practically constant. The sun's radiation is measured with satellites and the changes are not enough to change the temperature by much whereas greenhouse gases have changed by a relatively huge amount.

Yes, but with the other factors, that 0.24% increase over the last 300 years has a dramatic effect on the greenhouse gas component, and humidity generated by the waters.

The direct effect of 0.24% is only about a 0.4 W/m^2 increase and 0.17 degrees. However, since the sun is the source energy for the greenhouse effect, there is greater than a 1 W/m^2 increase total.

 

[Lord of Planar]

Solar radiation increased about 0.5 watts/m^2 from 1880 to 1960 then decreased by about the same amount to the present while the temperature went up. That amount of change in heat would change the temperature less than 0.10 degree. So even if the lag time is long it would not affect the temperature.

It depends on where you measure the change at, and don't forget the indirect effects.

That's how these pundits pull the wool over you guy's eyes. There is also a variety of feedback effects that increase the solar changes. They conveniently never talk about this inconvenient truth.

 

[Lord of Planar]

Again, Mr. Expert here knows more than the Climate Scientists of the world. "You never hear them acknowledge this and that..." NEVER! They simply overlooked it. Or better yet, there is a conspiracy.

OK smarty pants...

What would the greenhouse effect be in there was no solar energy driving it?

If the solar energy increases by about 0.2%, doesn't it stand to reason that there is a similar increase in the greenhouse effect?

 

[code1211]

The global temperature of earth or any planet in the solar system can be calculated using the Stephan-Boltzmann equation with the following variables.

1. Distance from the sun
2. Albedo
3. Greenhouse effect

Is that statement accepted by those at this site and if not, what is proposed as any other factor that controls the temperature of earth or any other planet?

I feel like temperature of the Sun and the Milankovitch Cycles might have some impact as well.

 

[code1211]

If those are the only things that control the earth’s temperature and we know the sun’s radiation has been decreasing then the temperature rise must be due to greenhouse gases.

We are currently at levels of TSC that are historically quite high.

That said, records from the past are pretty much rubbish and have been routinely dismissed, discarded and replaced.

climate4you welcome

Solar irradiance since 1610 as reconstructed by Lean et al (1995) and Lean (2000), until 2000. From 2001 data from PMOD/WRC are used. The thin line indicates the annual reconstructed solar irradiance, while the thick line shows the running 11 average. The values shown include a background component. See Lean (2000) for discussion of the amplitude of the background component. See Fröhlich (2000, 2003) for a description of the PMOD data. Last year shown: 2014. Last diagram update: 26 May 2015.

 

[Tim the plumber]

The global temperature of earth or any planet in the solar system can be calculated using the Stephan-Boltzmann equation with the following variables.

1. Distance from the sun
2. Albedo
3. Greenhouse effect

Is that statement accepted by those at this site and if not, what is proposed as any other factor that controls the temperature of earth or any other planet?

At what level do you define the surface of the earth?

The top of the rocky stuff and the top of the liquid water?

Or the top of the atmosphere?

The higher in altitude you go the colder it gets. The lower you go the warmer. This is the simple result of the physics of how gasses work.

The top of the atmosphere is at a remarkable similar temperature to the surface of the moon. Average.

 

[code1211]

Yes but the change in the sun's radiation is small so the Stephan-Boltzmann equation is practically constant. The sun's radiation is measured with satellites and the changes are not enough to change the temperature by much whereas greenhouse gases have changed by a relatively huge amount.

In spite of that, however, the Earth is cooler today than it was about 8000 years ago or than it was at the peaks of any of the past interglacials.

Today, the concentration of CO2 is higher than at any point in the last 500 million years and yet the global temperature is not.

What's wrong with this picture?

climate4you welcome

Fig.2. Reconstructed global temperature over the past 420,000 years based on the Vostok ice core from the Antarctica (Petit et al. 2001). The record spans over four glacial periods and five interglacials, including the present. The horizontal line indicates the modern temperature. The red square to the right indicates the time interval shown in greater detail in the following figure.

 

[code1211]

Solar radiation increased about 0.5 watts/m^2 from 1880 to 1960 then decreased by about the same amount to the present while the temperature went up. That amount of change in heat would change the temperature less than 0.10 degree. So even if the lag time is long it would not affect the temperature.

Link?