what reflects incoming solar radiation back into space
The balance between energy absorbed by the earth and energy reflected back into space is fundamental in determining how warm or cool the planet becomes. The proportion of radiation reflected away by a surface is called its albedo. Albedo can range between 0 (no reflectance) and 1 (complete reflectanceâlike a mirror). The earthâs average albedo is .31, which means that, overall, the planet reflects about 31% of incoming solar radiation back into space.