شناسايي منشاء و مسير رطوبت بارش هاي فوق سنگين استان بوشهر

Identification Humidity Resources and Course of Super Heavy Precipitation In Bushehr Province

In this paper, humidity advection maps of sea level and 850 hpa and geopotential height of sea level pressure and 500 hpa level were drawn and studied for 5 types of above 100 mm precipitation in the Bushehr province. Analyses of humidity advection maps showed that humidity resources for these precipitations are tropical regions of the eastern Africa, Indian Ocean, Arabian Sea and Adan Gulf, Oman Sea, Red Sea and Persian Gulf. The major courses of moisture entrance to the region are southern, south-eastern and south-western directions. On the surface level, the Siberian and Saudi Arabian high pressure systems, the east European dynamic low pressure center, the Sudan low pressure system and European high pressure center, and in the lower and middle levels of atmosphere the east Saudi Arabian anticyclone, north Africa trough and Spain anticyclone systems are the effective systems for transferring of humidity to the Bushehr region.