Rafidain Journal of Science

Abstract

This research investigates the relationships between cloudiness and different meteorological factors in Mosul City during the period (1980-2000).
The result indicate that there is a significant variation of cloudiness during the period of study where the value of the coefficient variation (CV) is ranged between
(15-81)%.
The results also showed that there is a clear oscillation of cloudiness during the months of the year.
The correlation coefficient (R) between cloudiness and the other meteorological elements (solar radiation, sunshine hours, relative humidity, air temperature and rainfall) are: (R= -0.82, R= -0.93, R= 0.97, R= -0.96, R= 0.92) respectively.