### 3. Mars’ Effective Temperature Calculation

**3. Mars’ Effective Temperature Calculation:**

**Te.mars **

**(1/R²) = (1/1,5²) = 1/2,25 Mars has 2,25 times less solar irradiation intensity than Earth has**

**Mars’ albedo: amars = 0,25**

**N = 1 rotations/per day, Planet Mars completes one rotation around its axis in about 24 hours **

**Mars is a rocky planet, Mars’ surface irradiation accepting factor: Φmars = 0,47**

**cp.mars = 0,18cal/gr oC, on Mars’ surface is prevalent the iron oxide**

**β = 150 days*gr*oC/rotation*cal – it is a Rotating Planet Surface Solar Irradiation Absorbing-Emitting Universal Law constant**

**σ = 5,67*10⁻⁸ W/m²K⁴, the Stefan-Boltzmann constant**

**Mars' Effective Temperature Complete Formula is:**

**Te.mars = [ Φ (1-a) So (1/R²) (β*N*cp)¹∕ ⁴ /4σ ]¹∕ ⁴**

**Planet Mars’ Effective Temperature Te.mars is:**

**Te.mars = [ 0,47 (1-0,25) 1.362 W/m²*(1/2,25)*(150*1*0,18)¹∕ ⁴ /4*5,67*10⁻⁸ W/m²K⁴ ]¹∕ ⁴ =**

**Te.mars = 215,23 K**

**The calculated Mars’ effective temperature Te.mars = 215,23 K is only by 2,4% higher than that measured by satellites**

**Tsat.mean.mars = 210 K !**