Study of monthly and hourly repetitions for rising dust phenomena to selected stations in Iraq

Abstract

In this search study hourly and monthly repetitions of rising dust that has code number (07) in weather code to selected stations in Iraq (Mosul, Baghdad, Basrah) for period ranged (1995 to 2005) by using data from Iraqi Meteorological Organization and Seismology. The results appears that Summer months (June , July , August) , and Spring months (March , April , May) recorded maximum value of occurrence number for rising dust , while the minimum of occurrence number recorded in Winter months (December , January , February) and Autumn months (September, October, November ) in all three study stations . The results also appears that daily weather observations ( , , , ) according to Greenwich Mean Time ( ) recorded maximum average for rising dust , while nightly weather observations ( , , , ) according to Greenwich Mean Time ( ) recorded minimum average for rising dust in all three study stations .