Assis. Prof., Dep. of Geography, Shahide Beheshti University
Abstract: (9948 Views)
The studies that was accomplished on 200 Sudanean rainy systems during the period of 20 years (1969-1989) showed that according to the synoptical patterns, sudanean systems are arrived to Iran from five important directions and they cause rainfall. The two first directions are arrived in a compo way with Mediterranean cyclones and the three other directions are arrived independently. In the first direction, Sudanean systems compound with Mediterranean cyclones over cyprus and east of Mediterranean and then move to the west side. In the second direction, Sudanean and Mediterraneans systems over Eraq compound together and then they influence Iran from west and south west. In the thee remainder directions in which Sudanean systems act independently, in the A direction, the Sudanean systems enter to Iran form the north of Arabiean Peninsula, Kuwit and Khooozestan. In the B direction, the systems influence Iran fron the north of Arabiean Peninsula and Boshear country. In the C directions , Sudanean systems are arrived to Iran form the center of Arabiean Peninsula and and Hormozgan county.
Received: 2010/05/25 | Accepted: 2010/05/25 | Published: 2010/05/25