Study of DREAM model Operation for Predicting the Occurrence of Dust Storm in Iran

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Ahmadi, Masoud | 2015

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 48112 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Afshin, Hossein; Firoozabadi, Bahar
Abstract:
In this study, DREAM model operation as a model to predict the occurrence of dust storms has been completed. The aim of this study is to identify capability of the model to predict dust storms in IRAN. The model has been run for June 2014 because on 2 June 2014, Tehran visited a dust storm with a speed of 111 kilometers per hour and yielded a huge economic losse. In this model, dust concentration,dust load and Aerosol Optical Depth(AOD) are calculated on an hourly basis. The model results do not captured the direct relationship between the average wind speed and dust Parameters and the model do not predict the dust storm on on 2 June 2014 in Tehran. The reason is that DREAM gets meteorological forecasts as input parameters with a resolution of up to 6 hours while the wind speed in Tehran on June 2 has returned to normal in less than 2 hours. It is necessary to increase the accuracy of the spatial and temporal resolutions and use accurate local data from meteorology stations for boundary conditions
Keywords:
Mathematical Modeling ; Tehran ; Dust Storm ; Dust Regional Atmosphere Model (DREAM)

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