what is distribution of insolation
1 2. Distribution of Insolationï¬ The places where the sun is perpendicular, or overhead, is the subsolar point ï¬ All other places receive diffuse insolation ï¬ Insolation: incoming solar radiation.ï¬ Tropics receive more concentrated insolation due to Earthâs curvature ï¬ 2.5Ã more insolation than poles!his presentation reviews the impact the curvature of the Earth has on the distribution of incoming solar radiation, or insolation.