The Synoptic Analysis of Sand Storm of Bushehr From 1961 to 2005 Case Study: 24 February 2010

In order to study of dust storm of Bushehr Province¡ all dust storms events collected and recognized as different patterns. The 24 February 2010 event selected as study sample and using graphical and calculational method¡ speed and direction in sea level and 500 hPa¡ vertical lifting speed of air mass from ground to 500 HPa maps prepared and analyzed. The result of this study indicated that in the study period¡ occurrence of blocking and vorticities in 500¡ 600 and 700 hPa¡ intensity instability and convection in all atmospheric levels from 1000 to 500 hPa and positive vorticities in 500¡ 600¡ 700 and 850 hPa observed. Also creating an anticyclone system in north of Caspian Sea obstacles of movement of this blocked system to east. At this time in Sudan and south of Saudi Arabia prevalent an intensity thermal convection system.