Modeling of Air Pollution using MODIS Data: Khouzestan Dust storm


1 Department of RS & GIS, faculty of earth science, Shahid Chamran University, Ahvaz, Iran

2 Department of Geology, faculty of earth science, Shahid Chamran University, Ahvaz, Iran

3 Khozestan Regional Electricity Co., Ahvaz, Iran

4 Department of RS, Shahid Rajayee teacher training University, Tehran, Iran


      Over the recent years the south west of IRAN including Khuzestan province has experienced high frequency of dust storm which led to a general decline in air quality, so the study of this phenomenon is very important. Using four month of  Deep Blue Aerosol Optical Depth(AOD) derived from Moderate Resolution Imaging Spectroradi-ometer(MODIS) on onboard NASA’s aqua satellite along with ground measurements of PM10 mass concentration measured at five sites located  in the Khuzestan province in 2009, the relationship between columnar AOD and hourly(HA) and daily average  (DA) PM were assessed. An empirical relationship between AOT and hourly and daily average PM10 mass is obtained and results show that there is an excellent correlation between satellite AOD and ground-Based hourly mean PM10 values with a linear correlation coefficient (R2) of 0.814. But MODIS AOD had a better positive Correlation with the coincident hourly average PM concentration than with DA. After correcting AOD for relative humidity (RH), the correlation did not improve significantly, suggesting that the RH was not the main factor affecting the correlation of PM with AOD in the first four month in Khuzestan.Experimental results demonstrate that the AOD product of MODIS is suitable for zoning of PM10 mass in south west of Iran in regional/local scale.


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