Calculation of Linke turbidity in atmosphere over Iraq by solar constant


Using extraterrestrial radiation, global solar, solar constant,( KR )and correction factor of sun – earth distance as input of some mathematical models, the Linke turbidity has been calculated and average sixteen placed around of Iraq by using thirty years solar radiation data covering period from ( 1961 – 1991). The average values (TL) were found to range from 4.27 to 4.75 the minimum value in Basrah and maximum value in Zakho.The results obtained for all locations carried out and observed small difference for all location. The average (TL) gradient from the north to south of Iraq.