Albedo
Substance %Reflected
Natural
Stratus clouds
    <150m thick 25-63%
    300-600m thick 59-84%
Green crops 5-26%
Green forest 5-10%
Green meadows 5-25%
Fresh snow 80-90%
Old snow 46-70%
Dark soil 5-15%
Light soil 25-30%
White sand 30-60%
Artificial
Concrete 17-27%
Blacktop road 5-10%
Scandinavia Africa