التوزيع اليومي للإشعاع الشمسي الكلي في محافظة أربيل

الملخص EN

Solar radiation is one of the most important elements of climate, and this has impact on all aspects and elements of climate in the region, despite its importance, but there have been not paid enough attention to it in Kurdistan region.

In this research, total solar radiation include direct and diffused of total solar radiation, and focused on daily solar radiation in Erbil Governorate, using descriptive, regional and analytic method, showing the features, location and time differences in Erbil Governorate.

This research depended on data of five years of five meteorological stations which include Erbil, Qushtapa, Bahrka, Soran and Ble stations, also obtained information, statistical data and related maps of research area.

The most important conclusions of this research is that the proportion of total annual solar radiation in Erbil Governorate reaches 15.99 mega joules/m2/ day, this average in winter season will be decreased to 7.98 mega joules/ m2/day, and will be increased to 17.57 mega joules/m2/ day in spring season and again in summer will be decreased to 24.68 mega joules/m2/ day, and again in winter will be decreased to 13.69 mega joules/m2/ day.

In this research proved that the average proportion of total solar radiation in Erbil reaches to 16.04 mega joules/m2/ day, 17.13 mega joules/m2/ day in Qushtapa, 17.35 mega joules/m2/ day in Bahrka, 14.85 mega joules/m2/ day in Soran and 14.65 mega joules/m2/ day in Ble.

Also proved that the average total solar radiation has a simple direction in plain areas in the south, while this proportion declined when reaches to mountainous area in the north.

The reason of these differences belong to different factors some are stables and others unstable, such as geographical location of the station, angle of solar radiation, the period of solar radiation reaches during a day and the real amount of solar radiation, the quantity of cloud, humidity ratio and the factor of dust.

In addition to some other conclusions which has been demonstrated in the content of this research.