Long Range Transport Contribution to PM 10 Concentrations in a Subtropical City (Qena/Egypt)

摘要: Particulate matter (PM10) concentrations have been measured during the period (May-2006 to April-2012) in forecasting and research center, south valley university Qena-Egypt. The data matched with backward air mass trajectories calculated by HYSPLIT4 for assessing long range transport influence PM10 concentrations. In this regard, Effect of different masses has studied using clustering technique whole as well seasons. Statistical analysis techniques used significance inter- cluster variation concentration explained variance clusters defining significant differences associated clusters. addition, probable source regions determined. Results show that seasonal average characterized maximum value 103 ± 7% µg/m^3 spring minimum values 89 6% 5% winter autumn, respectively. Northern comprised68%, 52%,88%and71% total number all period, spring, summer One these each is PM10, 105 µg/m^3, 124 139 97 situation changed winter, where, are originated mostly from northwest direction 44% trajectories, 100 µg/m^3associated one North Africa south-west Turkey found be most sources