The role of low pressures in the moisture transport of intense rains,

Abstract

Abstract: Heavy rain is one of the environmental hazards at the province of Sulaymaniyah and Halabja; It is made on account of the movement of atmospheric low pressure and Trough, the aim of this research is to know and showing the role of atmospheric low pressure and Trough for making the heavy rain and How to transfer their Humidity. The result shows that at mid air level (500hp) the creation of a trough in the form of deep and wide were formed, and at the surface level the merging both low pressure of (Sudan and The Mediterranean), both of them are a reason for heavy rain, and transfer of humidity. As well, it proven that (90%) heavy rains Humidity transfer from level (700hp) and lower. In a way that, most of humidity at the level (950hp) transfers from Arab and Oman Sea, Adan and Arab Gulfs, and at the level (850hp) most of humidity comes from the Red and Arab Sea, Gulf of Aden and at the level (700hp) most humidity comes from Red and Mediterranean Sea to research area. Key word: Humidity, Low pressure, Heavy Rain, Synoptic