Volume No. 6 Issue No.: 4 Page No.: 1000-1005 April-June 2012




Sarfaraz Ahmad*, Md. Abdullah Khan , Abu Husain1 , Huma Matloob and T. R. Warsi2

1. Department of Geology, Aligarh Muslim University, Aligarh (INDIA)
2. Department of Architecture, Zakir Hussain college of Engineering and Technology, Aligarh Muslim University, Aligarh (INDIA)


Received on : March 10, 2012




The temporal and spatial characteristic of Atmospheric Optical Depth (AOD) is monitored over the Aligarh city in Doab region of Ganga and Yamuna (India). It is indicated from the AOD results that Southern parts of the city’s atmosphere has higher AOD and lower AOD in the North of city. The field based studies conferred the direct relationship with dust deposition rate and AOD in the study area. The highest AOD and highest rate of dust deposition lies in the southern part of city. However, lowest AOD and rate of dust deposition lies in the North of city. The work was performed and analysed during the period Nov 1998- July 1999. Temporal variation in AOD also indicated lowest value in month of March and highest in the month of June. The higher value of AOD in winter period (December) is related to earlier drier months in (October –December). The decrease in AOD during January –March is caused by winter showers in most of the city area. Highest AOD in June is due to mass dust transfer along with loo winds coming from Western Rajasthan. Nature of the temporal variation shows spatial dissimilarity i.e., highest AOD in the North of the city is observed in June, while in the Southern most of the city it is observed in July. The present study provides an option to monitor air quality in the city atmosphere.


Keywords : AOD (Atmospheric Optical Depth), Air pollution, Aerosols, Aligarh, Remote sensing techniques