تأثير بحيرة سد الموصل على بيئة مناخ مدينة الموصل قبل و بعد الإنشاء

Abstract EN

The research studies the impact of Mosul Dam Lake on the climate of Mosul city, and comparison of the climate before and after the lake establishment.

Monthly values of various climatic elements were analyzed for a period of twenty years before the establishment (1966-1985) and twenty years after it(1986-2005).The analysis shows that there is an increase in cooling capacity calculated, according to the equation Cena et.

al.

after the establishment and at a rate ranging between (5 -24)% in most months but not in summer months and September.

It is found that the value of P/E is also increased in this period compared with that before the establishment.

this value increases in winter months compared with the other months with low this percentage to reach zero during the summer months.

In addition, there is an increase in the quantity of rainfall during winter months and March which highly affects wheat and barley growth in the region, whereas the comparison between the two periods concerning the amount of rainfall in spring and Autumn months is very simple.

Quantity of evaporation increases gradually after January and reaches its highest values in June and July then it starts decreasing..

There is no difference between the two periods except for quantities of evaporation a where a noticeable increase in June and July by 30% in the second period after the establishment.

Furthermore, a significant increase in wind acceleration is also observed after the establishment especially during November, December, January, February and March,.

this increase is ranged between (56-67%) while during April, May and October, it is ranged (36-45)%.the summer and September, the rate of increase is minor compared to other months.