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        Insolation on Earth

        Learn how the amount of solar energy reaching Earth’s surface varies across the globe and through time with this slideshow produced by WGBH. This series of maps from NASA shows average monthly insolation over the course of a year from January 2016 to December 2016. Darker colors indicate less sunlight reaching Earth’s surface; lighter colors indicate more sunlight. The maps are derived from satellite measurements of radiant energy leaving Earth’s atmosphere.

        To view the Background Essay and Teaching Tips for this slideshow, go to Support Materials below. This resource was developed through WGBH’s Bringing the Universe to America’s Classrooms project, in collaboration with NASA. Click here for the full collection of resources.


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