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Investigation of panchromatic satellite imagery sensor low bias in shadow method aerosol optical depth retrieval

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Author
Rivenbark, Brian J.
Date
2009-03
Advisor
Durkee, Philip A.
Second Reader
Nielsen, Kurt E.
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Abstract
A technique known as the Shadow Method was developed for calculating aerosol optical depths by measuring the radiance difference between shaded and unshaded regions in high-resolution satellite imagery by Vincent (2006). Previous research investigated use of the Shadow Method in regions of dust obscuration using buildings and clouds as shadow generation sources and a variety of background surfaces. A recurring low bias was seen when using the Shadow Method with the QuickBird satellite's panchromatic sensor. QuickBird and WorldView1 commercial imagery was examined using the Shadow Method at several sites co-located with AERONET observations sites. The results show that low bias is not attributed to sensor calibration, processing methods of the imagery, or water vapor content. The most likely source of low bias is the region of interest (ROI) selection geometry within the shadow regions.
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http://hdl.handle.net/10945/4908
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Related items

Showing items related by title, author, creator and subject.

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    Automating the shadow method for aerosol optical depth retrieval 

    Dombrock, Ryan M. (Monterey, California. Naval Postgraduate School, 2007-03);
    A new method for remote sensing retrieval of Aerosol Optical Depth was proposed and investigated by Vincent (2006). This shadow-based method uses the radiance difference between shadow and non-shadow regions in QuickBird ...
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    A fully automated method of locating building shadows for aerosol optical depth calculations in high-resolution satellite imagery 

    Belson, Brian L. (Monterey, California. Naval Postgraduate School, 2010-09);
    Vincent (2006) developed a technique for remotely measuring Aerosol Optical Depth (AOD) using commercial high-resolution satellite imagery. This technique measured the radiance difference between a building shadow and ...
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    A Verification Of Aerosol Optical Depth Retrieval Using The Terra Satellite 

    Cimbora, Brett D. (Monterey, California. Naval Postgraduate School, 2012-06);
    A method for sensing retrieval of Aerosol Optical Depth (AOD) was investigated by Vincent (2006). This technique is known as the Shadow Method. Using high-resolution commercial satellite imagery, Vincent was able to calculate ...
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