In this study, the synoptic analysis of dust storm for spring and summertime in Iraq were
investigated. The images for dust provided by NASA are used to emphasize the dust storm days,
while the composite maps of wind vector and geopotential 850hPa are mapped to investigate
the pressure and wind direction patterns appearing with the dust condition in the same days.
Spring has more dust frequency than summertime, especially in May. The frontal type of dust
storm is dominant on spring, the cold air pushes the warm air that picking up the sand to the air
through the vertical wind, but the southwestern high-speed wind and drought condition were
controlled on the dust in summer. The northwestern wind is the main factor that carries the dust
for long-distance. The eastern desert of Syria, Rub Alkhali in Saudi Arabia, the western area
of Iran and the area between Tigris and Euphrates rivers are the main sources for dust in Iraq.