Table 1 Ground Reflectance
|
General Situation
|
Typical Kr
|
|
|
|
|
Temperate localities
|
0.2
|
|
|
|
|
Tropical localities (humid)
|
0.2
|
|
|
|
|
Tropical localities (arid)
|
0.5
|
Source: CIBSE Guide
|
Environment
|
Typical Kr
|
|
Snow (fresh)
|
0.8 - 0.9
|
|
Snow (old)
|
0.45 - 0.7
|
|
|
|
|
Water
|
0.1 - 0.2
|
|
|
|
|
Ice
|
0.7
|
|
|
|
|
Grass
|
0.25
|
|
|
|
|
Crops & woodland
|
0.2
|
|
|
|
|
Concrete
|
0.3
|
|
|
|
|
Brick
|
0.2 - 0.4
|
|
|
|
|
Asphalt
|
0.15
|
Source: Climate in the UK by Page & Lebens.
