نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
The purpose of this study is to investigate the pollution of suspended particles 10 in Urmia city during a period of 10 years. Data analysis was done by spss22 software and graphs were drawn in Excel 2016. In this research, the dangerous PM 10 index level with values greater than 420 micrograms per cubic meter has been used as an index in determining the amount of pollution. Then, for a better analysis of air pollution in Urmia city, the synoptic patterns that prevailed in the area during highly polluted days were identified and interpreted. Finally, two synoptic patterns were identified.
The pollution results of the dangerous days of Urmia city showed that the most incidents of suspended particulate matter pollution occurred in the months of May, June, July and August. In the second 6 months of the year, the months of December, January and February have the highest number of dangerous days. The phenomenon of temperature inversion and the increase in the entry of various pollutants and their accumulation have led to an increase in the number of dangerous days in these months. Also, during this 10-year period, 2014 had the highest number of dangerous pollution days. It seems that the drying up of the Urmia Sea and the resulting climate changes have led to an increase in the number of sandstorms, especially in the summer of 2015.
کلیدواژهها English
