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The Image-Based Integrated Method for Determining and Mapping Aerosol Optical Thickness

Kyriacos Themistocleous

出版	IntechOpen, 2016
主題	Technology & Engineering / Environmental
URL	http://books.google.com.hk/books?id=P1eqzQEACAAJ&hl=&source=gbs_api

註釋

This chapter focuses on the development of an image-based integrated method for determining and mapping aerosol optical thickness (AOT). Using the radiative transfer (RT) equation, a methodology is developed using nonvariant targets with the revised darkest pixel method to improve the accuracy to calculate AOT over urban areas. This method can be applied to create thematic maps using GIS that present AOT values in a given area. The methodology is applied to Landsat TM/ETM+ satellite images of Limassol, Cyprus over a period of time to visualize and assess the AOT levels over the urban area. An accuracy assessment of the method shows a strong correlation between the in-situ AOT values from the sunphotometers and the AOT values derived from the image-based integrated method.