Enhancement of UV Radiation by Cloud Effect in NE of Brazil

Table 2

Linke turbidity index and the aerosol optical depth for 700 and 440 nm.

Month	Linke turbidity index (TL2)	Optical depth (700 nm)	Optical depth (500 nm)
January	4.6	0.19	0.33
February	4.0	0.14	0.24
March	4.0	0.14	0.24
April	4.6	0.19	0.33
May	4.4	0.17	0.30
June	4.6	0.19	0.33
July	4.2	0.16	0.27
August	3.9	0.13	0.23
September	4.2	0.16	0.27
October	4.1	0.15	0.26
November	3.9	0.13	0.23
December	4.8	0.21	0.37
Annual	4.3	0.16	0.28