The Faint Young Sun Paradox: A Simplified Thermodynamic Approach

Table 3

Possible scenarios of ancient surface temperatures for Mars under maximum power output regime.

Albedo 𝜌	Greenhouse coefficient 𝛾	Solar constant 𝑆/𝑆0 (normalized)	Time BP (Gyr)	Surface temperature, 𝑇1 (K)
0.0	0.5	0.85	2.029	275.2
0.1	0.5	0.95	0.66	272.9