**4. Conclusions**

In this chapter, the image-based integrated method is developed to retrieve AOT values from satellite images and display these values in an urban area, using the example of Limassol, Cyprus. The findings show that the proposed integrated image-based method is able to accurately obtain AOT measurements from satellite images. The accuracy assessment shows strong agreement between the *in-situ* AOT values and the AOT values retrieved through the method described in the chapter. The proposed methodology is able to retrieve AOT using satellite images and visually display AOT over urban areas by using GIS to produce thematic maps. Also, the significance of the image-based integrated method is that the environmental data is not needed, as compared with other methods. This methodology is therefore an alternative to more sophisticated and complex methods of deriving AOT values from satellite images, especially where atmospheric or meteorological data are not accessible. Also, the methodology can be used with archived satellite images where environmental data are not available, thereby providing detailed information regarding spatial aerosol concentration overtime. Also, thematic maps can be generated to illustrate the distribution of AOT overtime in a specific area of interest and enabling trends to be identified.
