Estimation of Clear Sky Normal Irradiance over Northern Nigeria Atmosphere
Figure 6.
(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 Maiduguri for the period of 14 years (1983-1997).