Calculating the surface temperature of a regular tetrahedron using Mr. Hansen’s formula from NASA
Author: kegasaExecutions: 32
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TeZero = (So*(1-A)/(4*σ))^(1/4);
TeSun = ((So*(1-A)/(1*σ))^(1/4));
TeInfinite = (TeSun + 0 + 0 + 0)/4;
print(TeZero);
print(TeZero - 273.15);
print(TeInfinite);
print(TeInfinite - 273.15);
print(TeSun);
print(TeSun - 273.15);
Solar radiation So = 1367 W/m^2
Earth's albedo A = 0.3
Stefan-Boltzmann constant σ = 5.67*10^(-8) W/m^2/K^4
TeSun = ((So*(1-A)/(1*σ))^(1/4));
TeInfinite = (TeSun + 0 + 0 + 0)/4;
print(TeZero);
print(TeZero - 273.15);
print(TeInfinite);
print(TeInfinite - 273.15);
print(TeSun);
print(TeSun - 273.15);
Solar radiation So = 1367 W/m^2
Earth's albedo A = 0.3
Stefan-Boltzmann constant σ = 5.67*10^(-8) W/m^2/K^4
| Temperature Te of a regular tetrahedron with infinite thermal conductivity | K |
| Temperature Te of a regular tetrahedron with infinite thermal conductivity | ℃ |
| Temperature Te of a regular tetrahedron with zero thermal conductivity | K |
| Temperature Te of a regular tetrahedron with zero thermal conductivity | ℃ |
| Surface temperature facing the sun Te | K |
| Surface temperature facing the sun Te | ℃ |
SCIENCE August 28, 1981
Climate Impact of Increasing
Atmospheric Carbon Dioxide
J. Hansen
πR^2(1 - A)So = 4πR^2σTe^4
Te = [So(1-A)/4σ]^(1/4) (2)
Te = 255 K
The mean surface temperature is
Te = 288 K
https://pubs.giss.nasa.gov/docs/1981/1981_Hansen_ha04600x.pdf
Climate Impact of Increasing
Atmospheric Carbon Dioxide
J. Hansen
πR^2(1 - A)So = 4πR^2σTe^4
Te = [So(1-A)/4σ]^(1/4) (2)
Te = 255 K
The mean surface temperature is
Te = 288 K
https://pubs.giss.nasa.gov/docs/1981/1981_Hansen_ha04600x.pdf
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based on solar radiation and blackbody radiation, the equation explained by Hansen shows that
without greenhouse gases, the Earth’s surface temperature would drop to -18°C.
Science, August 23, 1981 issue
Te = [So(1 - A)/4σ]^(1/4)