One of the most important environmental problems in recent years in the Middle East including Iran is the dust storm events. The main goal of this research was to conduct statistical analyses to identify the dusty days with visibility to less than 1 km. This study also dealt with the recognition of sources of this phenomenon and the route for dusts to enter Isfahan Province. In this study, data were collected for a 20-year period (1994–2013) including daily dust data at the ground stations, brightness temperature at wavelengths of 11 μm and 12 μm, and GDAS data for tracking the dust particle route in HYSPLIT software. Naein and Airport stations with frequencies of 920 and 919 days of dust (respectively) were identified as two critical centers of dust in Isfahan province. The spring season had the highest number of days with dust. Also, the highest and lowest frequencies of this event were observed in April–May–June and December–January, respectively. The border area between Iraq and Syria, west and southwest of Iraq, was the main source of the dust transported to Isfahan. Thermodynamic conditions of atmosphere using the Skew-T diagrams were stable during the dust events in the study area.

近年来，包括伊朗在内的中东地区最重要的环境问题之一就是沙尘暴事件。这项研究的主要目的是进行统计分析，以识别能见度小于1公里的尘土飞扬的日子。这项研究还涉及对这种现象的来源以及灰尘进入伊斯法罕省的途径的认识。在这项研究中，收集了20年期间（1994-2013年）的数据，包括地面站的每日尘埃数据，11μm和12μm波长处的亮度温度以及GDAS数据，这些数据用于在HYSPLIT软件中跟踪尘埃颗粒路线。在伊斯法罕省，粉尘发生频率分别为920天和919天的奈恩和机场站被确定为两个重要的粉尘中心。春季的灰尘天数最多。还，此事件的最高和最低频率分别在4月-5月-6月和12月-1月观察到。伊拉克与叙利亚之间，伊拉克西部和西南部的边界地区是运往伊斯法罕的粉尘的主要来源。使用Skew-T图的大气热力学条件在研究区域的尘埃事件期间是稳定的。