Sentences with phrase «thermal radiative equilibrium»
Thermal radiative equilibrium for his black boundaries is isothermal, and if the gas has a different thermal equilibrium then the system perpetually violates the second law with a radiative - gravitaional «heat fountain» that runs without work being done, precisely as my silver wire example does.
https://wattsupwiththat.com/
Miskolczi instead claims he has shown that the discontinuity is the result of ignoring the lower boundary condition, and in fact the ground is on average in thermal radiative equilibrium with the air in contact with it.
Not exact matches
A long time ago I wrote Radiative Forcing, Thermal Lag and Equilibrium Temperatures to explain this topic a little more.
The main point is that for a spherical body in radiative thermal equilibrium with the sun, where absorptivity = emissivity, then the temperature is independent of albedo and emissivity, because they cancel out of the equation.
A comparison of the radiative equilibrium temperatures with the observed temperatures has indicated the extent to which the other atmospheric processes, such as convection, large - scale circulation, and condensation processes, influence the thermal energy balance of the system.
He uses Kirchhoff's law, which is a law concerning thermal equilibrium, not to be confused with radiative equilibrium.
You see my problem is that in classical thermodynamics a system is described as being at thermodynamic equilibrium when it is in thermal equilibrium, mechanical equilibrium, radiative equilibrium, and chemical equilibrium.
It's an appropriate definition for looking to the changes well past 2100 as Earth settles into equilibrium again (by which I mean approximate radiative energy balance between solar input and thermal emission to space).
Jim, the bottom line for me is that for the earth to be in radiative thermal equiibrium with the sun, it has not been demonstrated that any change in chemical composition of the earth or atmosphere is able to affect the equilibrium temperature, providing this does not change albedo.
No: that is the beauty of using top of atmosphere radiative balance data — it automatically reflects the flow of heat into the ocean, so thermal inertia of the oceans is irrelevant to the estimate of equilibrium climate sensitivity that it provides, unlike with virtally all other instrumental methods.
The amount of greenhouse gases in the atmosphere combined with other factors determine the radiative balance, and / or temperature at which relative thermal equilibrium for a planet occurs based on these factors.
You get higher temperature because to get the required thermal equilibrium, you need more radiative flux from the Earth's surface.
the blackbody is already in radiative thermal equilibrium with a hotter source of energy That is simply wrong — That might be true if the blackbody was surrounded by a perfect insulator but is definitely not true for planets in space.
From thermal equilibrium (radiative forcing relatively zero including natural variation) for the past 10,000 years (Holocene), since the beginning of the Industrial age, the earth climate system is currently estimated to be 3.6 W / m2 positively charged (GHG's, and -2.0 W / m2 negatively charged (aerosols).
Kirchhoff showed this radiative exchange must be equal under the restrictive condition of thermal equilibrium.