Investigation of Climatic Effects of Fine Dust on Air Pollution in Southwestern Iran

نویسندگان

Birjandi, Noushin Assistant Professor of Environment, Department of Environmental and Fisheries Science, Faculty of Agriculture and Natural Resources, Lorestan University, Khorramabad, Iran

Ghobadi, Morteza Assistant Professor of Environment, Department of Environmental and Fisheries Science, Faculty of Agriculture and Natural Resources, Lorestan University, Khorramabad, Iran

چکیده مقاله:

Background and Objectives: The dust pollution in the air of cities is one of the environmental problems in the western and southwestern regions of Iran, which can have many effects on the environment and human life. The purpose of this study is the assessment of dust pollution, the effect of climatic parameters on it and the field of view in the southwestern regions of Iran. Methods: In this study, different statistical periods of four cities in southwestern of Iran including Ahvaz, Abadan, Khorramabad and Poldakhtar were studied during the years 2010 to 2019. The number of dusty days, speed and direction of maximum wind and reduction of field of view were evaluated as annual and seasonal climatic parameters Result: The results showed that the maximum of dusty days accured in the spring and summer in the cities of Ahvaz, Abadan, Khorramabad and Poldakhtar, respectively. The minimum of dusty days in the all stations occurred in autumn. The results also showed that in all cities, except Ahvaz, the seasons with the highest amount of dusty days (spring and summer) do not correspond to the seasons of maximum wind speed, which indicates the external sources of the dust phenomenon. Conclusion: According to the results, increasing the distance from external dust sources of Arab countries such as Iraq and Saudi Arabia, the dust sources become local and internal sources. Vegetation around cities reduces the entry of dust into cities and is considered as an effective factor in reducing pollution in the region.

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