Albedo - Percentage of reflected sun light in relation to the various surface conditions of the earth
<a href="//commons.wikimedia.org/wiki/User:Hgrobe" title="User:Hgrobe">Hannes Grobe</a>, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany
CC BY-SA 2.5
<span class="int-own-work" lang="en">Own work</span>