Albedo is the fraction of light that is reflected by a surface. Normally we use the term albedo to describe how reflective a planet or moon is. The albedo is on a scale from 0 to 1 with no units. An albedo of 0 means total absorption. An albedo of 1 means total reflection. To find the albedo, we divide the amount reflected by the total amount received.
albedo = amount reflected / amount received
albedo = 110 wm-2 / 789 wm-2
albedo = 0.139
The surface albedo is 0.139
