Dust storm simulation over Iran using HYSPLIT

Journal of Environmental Health Science Engineering

Sarmad Ghader¹  Alireza Aslemand²  Majid Shafiepour-Motlagh²  Khosro Ashrafi² 

[1] Institute of Geophysics, University of Tehran, Tehran, Iran;Graduate Faculty of Environment, University of Tehran, Tehran, Iran

关键词: MODIS satellite images;    HYSPLIT;    PM₁₀;    Trajectory;    Dust sources;    Dust storms;   

Others  :  810914
DOI  :  10.1186/2052-336X-12-9

 received in 2012-08-09, accepted in 2013-10-15,  发布年份 2014

【 摘 要 】

Particulate matters have detrimental effects on human health, environment and economic. This pollutant may emit from anthropogenic or natural sources. On global scale, main proportion of natural particulate matter release to the atmosphere because of wind erosion from arid and semi-arid regions. Recently, the amount of dust coming from Arabian countries has dramatically increased, especially dust storms that are affecting western and even central parts of Iran. This phenomenon has caused a lot of environmental problems. Dust source identification and trajectory simulation using numerical techniques are the main aims of this study. HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) model dust module and trajectory simulation are utilized in this research and two case studies are investigated (in May and June 2010). The base of the HYSPLIT dust module is the PM₁₀ dust storm emission algorithm for desert land use. This methodology is applied to estimate hotspots and trajectories. Due to the results, dust storms started on May 17th and June 7th because of high wind shear (>8.5 m/s) from the western Syrian Desert. The source region limited to 32.50 °N to 33.80 °N and 38.00 °E to 38.80 °E coordinates. Dust plumes lifted and dispersed towards the east and southeast of the sources and reached Ahvaz on May 18th and June 8th. The average of PM10 concentration in these dates reached 625 and 494 View MathML"> on Ahvaz monitoring stations, respectively. Moreover, the results gained from the model for dust motion simulation are similar to the MODIS satellite images.

【 授权许可】

   
2014 Ashrafi et al.; licensee BioMed Central Ltd.

【 图 表 】

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