Earth, Uranus and Neptune Black Body Temperature

estimating IR albedo and server sky heating


Earth

Uranus

Neptune

Semimajor Axis

1.0

19.2

30.0

AU

Bond Albedo

0.29

0.30

0.29

optical all angles

Geometric Albedo

0.367

0.51

0.41

optical towards Sun

Sunlight

1366

3.706

1.518

W/m2

Sunlight Absorbed

960.0

1.816

0.895

W/m2 (geometric albedo)

Isotropic IR

240.0

0.454

0.224

W/m2

Temperature

255.06

76?

65?

55

K (at IR "top" )

IR Luminosity e=1

1.892

1.012

0.519

W/m2

est. IR emissivity

1.0

0.234

0.448

0.432

Plus Server Sky 0.550 W/m2 ambient

IR absorbed

0.550

0.129

0.246

0.238

W/m2

Total IR emitted

240.55

0.583

0.700

0.462

W/m2

New Temperature

255.21

81.4

72.4

65.9

K (at IR "top" )

Heating

0.15

5.4

7.4

10.9

K hotter

1366 W/m2 at 1 AU, sb = 5.670367e-8 W/m2K4

UranusNeptune (last edited 2015-10-04 02:59:00 by KeithLofstrom)