Predicting Downward Longwave Radiation for Various Land Use in All-Sky Condition: Northeast Florida

Table 2

ASOS cloud amount report.

ASOS measured amount in % of sky	Equivalent in oktas	Cloud cover fraction	ASOS note
00 to ≦05	0	0	Clear
>05 to ≦25	>0 to 2/8	0.125	Few
>25 to ≦50	>2/8 to ≦4/8	0.375	scattered
>50 to ≦87	>4/8 to ≦8/8	0.75	Broken
>87 to 100	8/8	1.0	overcast