Estimation of the clear sky and the ground emissivity in Bahrain

The clear sky emissivity ₀ and the ground emissivity _g in Bahrain is studied. The study reveals that the annual value of ₀ is 0.88 ± 0.039 relating to the maximum and the minimum values in August and February, respectively. Meanwhile, the annual value of _g is 0.338 ± 0.228, where the maximum and the minimum values are in July and January, respectively. These two parameters are related to the transmittance factor .