Surface % reflectance(100% - all visible light reflected)water (high solar angle) 3 - 10 blacktop road 5 - 10 coniferous forest 5 - 15 water (low solar angle) 10 - 100 tundra 15 - 20 cirrus 15 - 20 cities 15 - 20 deciduous forest 15 - 20 green crops 15 - 25 grassland 15 - 25 sand/desert 20 - 30 glacier ice 20 - 40 sea ice 30 - 40 stratus (150m thick) 30 (average) stratocumulus 35 - 80 subtropical cumulus 40 - 45 old snow 40 - 60 cirrostratus 45 - 60 stratus (150 - 300m thick) 60 (average) nimbostratus 65 - 70 stratus (300 - 600m thick) 70 (average) fresh snow 75 - 95