Written by Christos I. Vournas,
M.sc. mechanical engineer
We do planets and moons surface temperatures comparison.
The presence of atmosphere doesn't warm Earth's surface.
It is the other reasons, not the presence of atmosphere, that make Earth warmer than the Moon by +68°C.
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Key words:
Specular Reflection
Φ - Solar Irradiation Accepting Factor (spherical shape and surface roughness coefficient), for smooth bodies Φ = 0,47 and for rough / porous Φ = 1
Immediate IR Emission
Rotational Warming Phenomenon ( N*cp )1/16
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It is a demonstration of the Planet Surface Rotational Warming Phenomenon!
These ( Tmean, R, N, cp and albedo ) planets' parameters are all satellites measured.
These planets' parameters are all observations.
Planet…....Earth.….Moon….Mars
Tsat.mean.288 K….220 K…210 K
R…...............1... AU..1 AU..1,525 AU
1/R²…..........1…........1….…0,430
N…..............1....1 /29,531..0,9747
cp................1.........0,19.......0,18
a..............0,306......0,11......0,250
1-a…........0,694……0,89…….0,75
(1-a)¹∕ ⁴…0,9127....0,9713…0,9306
coeff...........1...................0,72748
As we can see Earth and Mars have very close values for (1-a)¹∕ ⁴ term;
For Earth (1-a)¹∕ ⁴ = 0,9127 and for Mars (1-a)¹∕ ⁴ = 0,9306.
Also Earth and Mars have very close N; for Earth N = 1 rotation /day, and for Mars N = 0,9747 rotation /day.
Earth and Mars both have the same Φ = 0,47 solar irradiation accepting factor.
Thus the comparison coefficient can be limited as follows:
Comparison coefficient calculation
[ (1/R²) (cp)¹∕ ⁴ ]¹∕ ⁴
Earth:
Tsat.mean = 288 K
[ (1/R²)*(cp)¹∕ ⁴ ]¹∕ ⁴ =
= [ 1*(1)¹∕ ⁴ ] ¹∕ ⁴ = 1
Mars:
Tsat.mean = 210 K
[ (1/R²)*(cp)¹∕ ⁴ ]¹∕ ⁴ =
= [ 0,430*(0,18)¹∕ ⁴ ] ¹∕ ⁴ = ( 0,430*0,65136 )¹∕ ⁴ =
= ( 0,2801 )¹∕ ⁴ = 0,72748
Let's compare
Earth coeff. / Mars coeff. =
= 1 /0,72748 = 1,3746
And
Tmean.earth /Tmean.mars =
= 288 K /210 K = 1,3714
Conclusion:
Everything is all right.
It is a demonstration of the Planet Surface Rotational Warming Phenomenon!
And
It is the confirmation that the planet surface specific heat "cp" should be considered in the (Tmean) planet mean surface temperature equation in the sixteenth root:
Tmean.planet = [ Φ (1-a) So (1/R²) (β*N*cp)¹∕ ⁴ /4σ ]¹∕ ⁴.
Table of contents - Links
0). Explain Rotational Warming Model.
Demonstrate the Initial PREMISE, Links: (1) and (2)
3).The Planetary Temperatures Comparison Criteria.
4). "The total amount of the specularly reflected portion of solar flux"
5). How A Planet Retains The Solar Energy - the role of the Immediate IR emission.
6). Φ -Factor is an analogue of the well known Drag Coefficient Cd=0,47
7). “What ‘portion’ of ‘sunlight’ reaches surface of Earth?”
8). The satellites do not measure Bond Albedo.
9). Stefan-Boltzmann formula J = σ T4 W/m² doesn't apply to terrestrial temperatures.
10). The Theoretical Equation.
12). The actual reason of the observed Global Warming.
13). The Axial Precession's role in Global Warming.
14). The Original Milankovitch cycle.
15). The Reversed Milankovitch cycle.
16). The higher CO2 content in ice core samples relates to colder periods.
17). Sensible Heat /Latent Heat ratio.
18). The conventional greenhouses, and the role of immediate IR emission.
19). NASA Technical Memorandum An Earth Albedo Model
20). The yearly total Immediate IR Emitted solar energy - in our times - is lower.
21). The yearly total reflected solar energy - in our times - is lower.
Appendix - Links
1). Earth's Corrected Effective Temperature (210 K ) calculation.
2). Earth's Average Surface Temperature (288 K ) calculation.
3). Moon's Corrected Effective Temperature (224 K ) calculation.
4). Moon's Average Surface Temperature (220 K ) calculation.
5). Mars' Corrected Effective Temperature (174 K ) calculation.
6). Mars' Average Surface Temperature (210 K ) calculation.
7). Mercury's Corrected Effective Temperature (364 K ) calculation.
8). Mercury's Average Surface Temperature (340 K ) calculation.
9). Titan's Average Surface Temperature (93,7 K ) calculation.
10). Earth / Mars satellite measured mean surface temperatures 288 K and 210 K comparison.
11). Earth's /Moon's temps 288K /220K comparison.
13). Blog.
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The table of contents will be completed some time soon. For more pages view the menu at the top.
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