A planet with average temperature 288K we cannot know what it emirs
Earth’s average temperature 288K is a comparison number. A planet with average temperature 288K we cannot know what it emits.
8 October 2026
Nikolov
Nikolov: On the average temperature of airless spherical bodies and the magnitude of Earth’s atmospheric thermal effect | SpringerPlus | Full Text (springeropen.com) "While the average outgoing LW flux of a planet is an observable physical parameter, Te derived from it using Eq. (3) is a mathematical abstraction with no physical analogue at, below or above the surface. Thus, planetary effective emission temperatures are not compatible with measured ph ysical temperatures regardless of the albedo they are based on. In other words, Te is a non-physical quantity with respect to a sphere. Consequently, comparing Earth’s observed global mean surface air temperature (287.6 K) to any Te is bound to produce numerically and theoretically misleading results. The conceptual distinction between Te on one hand and Tna or Ts on the other arises from the mathematical understanding that mean planetary temperatures cannot in principle be inferred from globally averaged radiative fluxes. In this regard,
22 June 2026
The combined double effect (more heat absorption and more even the absorbed heat distribution)
Two bodies subjected to the same flux. It is always there - a strongly irradiated area (24/7), which area moves on the rotating surface, but which always faces sun. The planet 2, whith a higher Ncp product develops lower IR-emitting conditions(temperatures), and the planet 1, with a lower Ncp product develops higher IR-emitting conditions 🟠 Immediate IR1 > Immediate IR2 The planet 2 is not so hot at local noon hours, so it gives Immediatelly out less IR, so less heat is immediatelly lost. The planet 1 is warmer at local noon hours, but those higher temperatures only weakly affect locally the planet average surface temperature rise, as it influences at their first power (T), whereas those higher temperatures - IR emission at fourth power (T^4) - they, at the same time, they lessen the average surface temperature significantly, because those the higher local noon temperatures contemplate for the much higher Immediate IR energy emission. 👉 Tmean2 > Tmean1 The higher Immediate IR emissi
14 June 2026
The planetary temperatures Comparison Criteria Tsat/Te
The planetary temperatures Comparison Criteria Tsat/Te In planetary effective temperature equation (Te) the solar flux (S) is in fourth root. We can rewrite Initial Premise for two identical spheres as: Tmean1/Tmean2 = Te1/Te2 or, for two identical spheres Tmean1/Te1 = Tmean2/Te2 Now, we extend this to two identical bodies, planets and moons, comparing their respective satellite measured temperatures Tsat1 and Tsat2 and write: Tsat1/Te1= Tsat2/Te2 Therefore we have defined the planetary temperatures Comparison Criteria (Tsat/Te). Important notice: For two identical celestial bodies the Tsat1/Te1= Tsat2/Te2 But if for two bodies Tsat1/Te1= Tsat2/Te2 that doesn't necessarilly prove the bodies identical. Link: https://x.com/i/grok/share/059e0e4047e24cfb9c01831274bff707
14 May 2026
They don't absorb according to Lambertian cosin law
Smooth spheres and smooth surface planets and moon, specifically: Mercury, Earth, the Moon, Mars, Europa, Ganymede do not follow Lambertian cosin law because they have strong specular reflection constituents. They do not absorb the entire flux falling on their surface. Link: https://x.com/i/grok/share/4bfaf2f759fc4db4857641e4fc66af72
11 May 2026
Initial Premise Test
Christos Vournas @CVournas44116 · 30m Initial Premise Test https://cristos-vournas.com/blog/initial-premise-test… Thought for 11s The X post by mechanical engineer Christos Vournas links to his blog post "Initial Premise Test," which tests the basic assumption that planetary surface temperatures scale solely with the fourth root of incoming solar flux for identical bodies. The test normalizes temperatures of solar system bodies (planets and moons) to Earth's solar flux distance, then successively adjusts for albedo, rotational warming via (N*cp)^{1/16}, and a solar irradiation accepting factor Φ (~0.47 for smooth surfaces accounting for specular reflection), causing measured temperatures to converge tightly around Earth's 288 K. Vournas uses this to argue that factors like surface roughness, rotation rate, and heat capacity explain temperature differences across bodies more than atmospheric effects, challenging standard greenhouse models with data tables showing residuals under 3% aft
24 April 2026