### Planet Mars black-body temperature (effective temperature) Te misfortunate coincidence

**Planet Mars black-body temperature (effective temperature) Te misfortunate coincidence**

** We have calculated the Corrected Effective Temperature for Mars Te.correct.mars = 174 K**

** But let's see what happened when the Effective Temperature of Mars was not yet corrected. Te.mars = 209,8 K (https://nssdc.gsfc.nasa.gov/planetary/factsheet/marsfact.html)**

** Tsat. mean.mars = 210 K ****(https://en.wikipedia.org/wiki/Mars) **

**We have here planet Mars mean temperature measured by satellites:**

** Tsat.mean.mars = 210 K **

**We have the Mars black-body temperature**

** Te = 209,8 K **

**These temperatures the Tsat.mean.mars = 210 K and the black-body temperature Te.mars = 209,8 K are almost identical. **

**These two very important for planet Mars temperatures are almost identical, but it is a coincident.**

** It is a coincident, but with very important consequences. **

**Let's explain:**

** Tsat.mean.mars = 210 K measured by satellites is almost equal with Te.mars = 209,8 K **

**When measuring by satellites the Tsat.mean.mars = 210 K and calculating Mars black-body temperature Te.mars. = 209,8 K scientist were led to mistaken conclusions.**

** First they concluded that the planet's effective and mean temperatures should normally be equal, which is wrong.**

** Secondly they concluded that Earth without atmosphere should have an average surface temperature the black-body temperature (effective temperature), Te.earth = 254 K (https://nssdc.gsfc.nasa.gov/planetary/factsheet/earthfact.html)**

** Then they compared the Te.earth = 254 K with the measured by satellites Tsat.mean.earth = 288 K (https://nssdc.gsfc.nasa.gov/planetary/factsheet/)**

** The difference of 288 K - 254 K = Δ34 oC was then attributed to the Earth’s atmosphere greenhouse warming effect.**

** Now we have the Mars Corrected Effective Temperature **

**Te.correct.mars = 174 K. **

**The fact that the Corrected Effective Temperature of Mars is Te.correct.mars = 174 K, which is not even close to the satellite measured Tsat.mean.mars = 210 K debunks the above syllogism that the planet without atmosphere mean surface temperature is the planet black-body temperature (effective temperature).**

** The above wrong syllogism happened because of the wrongly estimated Mars black-body temperature. **

**It was calculated assuming planet absorbing incoming solar energy as a disk. We know now that planet absorbs the incoming solar energy as a sphere, and not as a disk.**

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### Comparison of Te and Te.correct for planets Mars, Earth, Moon and Mercury

**Φ = 0,47 is the for smooth without atmosphere planet surface solar irradiation accepting factor**

** Planet...Tsat.mean.....Te…..Te.correct**

** Mars …....210 K ....209,8 K …174 Κ**

** Earth.......288 K.......254..K......210 ****K **

**Moon.......220 K......270,4..K....224 K**

** Mercury....340 K......440 K......364 K **

**Let's explain:**

**For Mars**

**Tsat.mean.mars = 210 K measured by satellites is almost equal with **

**Te.mars = 209,8 K (black-body equation calculated)**

**So scientist were led to mistaken conclusions.**

**First they assumed that the planet's effective and mean surface temperatures were equal, which is wrong. **

**Second, Earth's effective temperature was calculated as**

** Te.earth = 254 K **

**The measured by satellites**

** Tsat.mean.earth = 288 K. **

**The difference of Δ 34 oC was attributed to the Earth’s atmosphere greenhouse warming effect. **

**Now we have calculated Mars' effective temperature as**

** Te.correct = 174 K **

**So the assumption that planet mean surface temperature**

** Tmean = Te is wrong. **

**Mars' Tsat.mean.mars = 210 K.**

**We can conclude now that Earth's**

**Te.earth = 254 K is not equal with the Earth's Tmean.earth.**

**The satellite measured Tsat.mean.earth = 288 K**

** and it is the Earth's actual average (mean) surface temperature.**

** Thus the difference of 288 K - 254 K = Δ34 oC does not exist.**

**Also we have calculated the Earth's ****Te.correct.earth = 210 K**

** which is much less than the previously calculated by the black-body equation**

**Te.earth = 254 K.**

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**https://www.cristos-vournas.com**

** The faster a planet rotates (n2>n1) the higher is the planet’s average (mean) temperature T↑mean:**

** Tmin↑→ T↑mean ← T↓max**

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