Estimation of Clear Sky Normal Irradiance over Northern Nigeria Atmosphere

Research Journal of Ecology and Environmental Sciences | Vol 1, Issue 2

Figure 4

(a) shows monthly mean clear sky beam (rad_mb) and diffused radiation (rad_md). (b) shows monthly mean clear sky transmittances of water vapor (Tw), ozone (Toz), aerosols (Ta) and gas (Ta) in Yola for the period of 14 years(1983-1997).

Figure 4. (a) shows monthly mean clear sky beam (rad_mb) and diffused radiation (rad_md). (b) shows monthly mean clear sky transmittances of water vapor (Tw), ozone (Toz), aerosols (Ta) and gas (Ta) in Yola for the period of 14 years(1983-1997).