Dust tracking and modeling in Southeast of Iran (Case study: Dust storm from December 16 to 20, 2016)

Blowing dust is one of the most common natural phenomena in arid and semi-arid regions, which causes a lot of damage every time it occurs. This phenomenon is introduced as a natural hazard in terms of negative effects in natural and human-managed ecosystems, and it is one of the most important problems of ocieties in arid and semi-arid regions. In this research, in order to investigate and analyze this phenomenon, it was simulated by the WRF-Chem model, and MODIS satellite data and the HYSPLIT model were also used to investigate the mechanism of particle transport and its routing in the Jazmurian basin in the southeast of Iran. The results showed that the aerosol optical depth index is high in eastern Iran on December 16 to 20, and the particles originating from this part were mainly affected by the northern currents and moved to the south. Also, the results of the numerical simulation of the dust storm using the WRF-Chem model showed that the surface concentration values ​​of the output particles of the WRF_Chem model at UTC18 on December 17, 2016 in the south of Sistan and Baluchistan province and Hormozgan province were higher than 2500 micrograms per cubic meter. and in the central areas of Jazmurian region, the concentration of dust reaches more than 2000 micrograms per cubic meter.