تاثيردورة البقع الشمسية(23) على المجال المغناطيسي الارضي فوق العراق

The relationship between the solar activity and the geomagnetic field have been investigated in this study for Iraq ,for the sunspot period (23) located at longitude 44.4°east and latitude 33.3° north as an average ,by using the monthly average of universal geomagnetic index (AP), which has been taken from (Noaa) satellite: Japanese and American stations. It is found that for the cycle (23), the year (2000) represents the maximum of this cycle and the year (2008) represents the minimum of it . The relation between the sunspot and (AP) index is obtained for the year (2000) rather than the year (2008) . Which indicates that a strong solar activity is present for the year (2000) and has an influence of the sunspot on the atmosphere of the earth, including the geomagnetic field. The increase of sunspot leads to an increase in solar magnetic field then its effect on the geomagnetic field as a result, which is directly proportional to each other