surface_temperature(t) = surface_temperature(t - dt) + (Noname_3 - Noname_2) * dt INIT surface_temperature = 100 INFLOWS: Noname_3 = incoming_radiation*3.14159 OUTFLOWS: Noname_2 = outgoing_radiation*4*3.14159 distance_from_sun = 1 incoming_radiation = 1370/distance_from_sun^2 outgoing_radiation = 5.67e-08*surface_temperature^4