The Reasons for Seasons: How the Earth and Sun interact to create seasons


Explore the Reasons for the Seasons on Earth. When the applet starts up, the location and position of the Earth is shown for the current day and time. Use the Controls (see below) to explore.


The maps of global images showing solar insulation are 24 year (1984-2007) monthly averages of surface incoming shortwave radiation and were provided by NASA from the GEWEX SRB Shortwave Release 3 algorithm.

The scale for the maps (units are Watts / m2):

This applet is Copyright © 2012 by Tom Whittaker.