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This presentation reviews the impact the curvature of the Earth has on the distribution of incoming solar radiation, or insolation.
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The Uneven Distribution of Insolation
Intro to Physical GeographyChapter 2
Distribution of Insolation
The places where the sun is perpendicular, or overhead, is the subsolar point All other places receive diffuse insolation Insolation: incoming solar radiation.
Tropics receive more concentrated insolation due to Earth’s curvature 2.5× more insolation than poles!
Daily Insolation Receipts at Four Locations
Daily Energy Receipts
Daily Energy Receipts
Daily Energy Reciepts
Daily Net Radiation (Energy)
