Earth, Uranus and Neptune Black Body Temperature
estimating IR albedo and server sky heating
|
Earth |
Uranus |
Neptune |
||
Semimajor Axis |
|
19.2 |
30.0 |
AU |
|
Bond Albedo |
|
0.30 |
0.29 |
optical all angles |
|
Geometric Albedo |
|
0.51 |
0.41 |
optical towards Sun |
|
Sunlight |
|
3.706 |
1.518 |
W/m2 |
|
Sunlight Absorbed |
|
1.816 |
0.895 |
W/m2 (geometric albedo) |
|
Isotropic IR |
|
0.454 |
0.224 |
W/m2 |
|
Temperature |
|
76? |
65? |
55 |
K (at IR "top" ) |
IR Luminosity e=1 |
|
1.892 |
1.012 |
0.519 |
W/m2 |
est. IR emissivity |
|
0.234 |
0.448 |
0.432 |
|
Plus Server Sky 0.550 W/m2 ambient |
|||||
IR absorbed |
|
0.129 |
0.246 |
0.238 |
W/m2 |
Total IR emitted |
|
0.583 |
0.700 |
0.462 |
W/m2 |
New Temperature |
|
81.4 |
72.4 |
65.9 |
K (at IR "top" ) |
Heating |
|
5.4 |
7.4 |
10.9 |
K hotter |
1366 W/m2 at 1 AU, sb = 5.670367e-8 W/m2K4