Incidence Angle

in

Derived for the center of the image, this is the angle between the Sun and a "normal" drawn perpendicular to the surface of the planet at the time the image was acquired. An angle of 0 degrees means the Sun is directly overhead and an angle of 90 degrees means the Sun is on the horizon.

  • "DAY" images have an incidence angle of 0-90 degrees
  • "NIGHT" images have an incidence angle of 90-180 degrees

Commonly abbreviated as "Solar Incidence Angle" or "Solar Angle".