نوع مقاله : مقاله پژوهشی
عنوان مقاله English
نویسندگان English
Dust is one of the most important atmospheric pollutants in the West Asian region, which has significant impacts on air quality, human health, and marine and terrestrial ecosystems. This study analyzes the spatial and temporal fluctuations in dry and wet deposition fluxes of dust-borne suspended particles (Dust Deposition) in the Persian Gulf and Oman Sea (Makran) basin over ten years (2014 to 2023) using MERRA-2 and CAMS reanalysis data. The main goal is to identify critical points, determine temporal patterns (monthly, seasonal, and long-term), and analyze the scale of deposition types over the region, and then compare the performance of each data set in the Persian Gulf and Oman Sea (Makran). The results showed that the most critical dry deposition points are the western and northwestern coasts of the Persian Gulf, with an annual average of about 2.5 ton/km2, which is affected by proximity to dust sources and seasonal processes. Also, the peak of dry deposition occurs in the warm seasons of the year (late spring and summer) and in July at a daily rate of 22.46 µg/m2. Wet deposition is also dominant in areas with higher precipitation, including the northwestern coasts of the Persian Gulf and the eastern Oman Sea, with an annual average of about 2.4 ton/km2, and its maximum in February is 24.95 µg/m2 per day, which occurs for the northern Persian Gulf. Also, the results of the correlation analysis of meteorological factors in the region showed that dry deposition has a higher correlation with surface wind speed (R=0.234) and wet deposition has a stronger correlation with rainfall (R=0.445). These findings are essential in air quality management and environmental impact assessment.
کلیدواژهها English