Total Ozone Column Variability of Selected Stations over Iraq

Abstract

This study aims to know the annual, monthly, and daily changes of total ozone in some selected stations in Iraq (Baghdad, Mosul, and Basra). The data presented from the Ozone Monitoring Instrument (OMI) for the period (2003-2015) were used to study the total ozone column. It was found that the total ozone column has temporal variation. As for the annual and daily changes. In the annual changes, we find that the tendency has negative value in both the station (Mosul and Baghdad) by (-0.606 and -0.459) DU with maximum annual mean value was (330.13) DU in Mosul station, while the amount of the tendency is a positive value by (0.115) and the minimum annual mean value was (292.74) DU in Basra station, and the same is the case for the daily change has a value negative (-3.88—-0.699) for each Mosul and Baghdad stations and positive (1.902) for Basra station. The monthly total ozone varied between a maximum value in spring of (353 and 344) DU - (334and321) DU in the station (Mosul and Baghdad) respectively, while the maximum value of total ozone varied between (304 and 313) DU in the summer about the station Basra.