Please use this identifier to cite or link to this item: http://ktisis.cut.ac.cy/handle/10488/3642
Title: The comparison of the darkest pixel and empirical line atmospheric correction methods to retrieve aerosol optical thickness using the radiative transfer equations
Authors: Chrysoulakis, Nektarios 
Themistocleous, Kyriacos 
Retalis, Adrianos 
Hadjimitsis, Diofantos G. 
Keywords: Aerosols;Optical properties;Optical radar;Pixels;Radiative transfer;Reflection;Accuracy assessment;Aerosol optical thickness;Atmospheric corrections;Pixel methods;Pseudo-invariant targets;Radiative transfer equations;Reflectance values;Sun photometers;Remote sensing;Electrical engineering;Electronic engineering;Information engineering
Category: Environmental Engineering
Field: Engineering and Technology
Issue Date: 2012
Publisher: SPIE
Source: Remote Sensing of Clouds and the Atmosphere XVII, 2012, Edinburgh, United Kingdom
Abstract: This paper presents a comparison of the darkest pixel (DP) and empirical line (EL) atmospheric correction methods in order to examine their effectiveness to retrieve aerosol optical thickness (AOT) using the radiative transfer (RT) equations. Research has found that the DP and the EL methods are the two simplest and most effective methods of atmospheric correction, however, which of the two atmospheric correction methods is more effective in deriving accurate AOT values remains an open question. The accuracy of the DP and EL atmospheric correction methods were examined using pseudo-invariant targets in the urban area of Limassol in Cyprus, by using reflectance values before and after atmospheric correction. Eleven Landsat 5 and Landsat 7 satellite images were atmospherically corrected using both the DP and EL methods. The reflectance values following the DP and EL method of atmospheric correction were used in the radiative transfer equation to derive the AOT values. Following, an accuracy assessment was conducted comparing the in-situ AOT values as measured from sun photometers with the AOT values derived from the RT equations in order to determine the effectiveness of the DP and EL methods for retrieving AOT. The study found that the EL atmospheric correction method provided more accurate AOT values than the DP method. 2012 SPIE.
URI: http://ktisis.cut.ac.cy/handle/10488/3642
ISSN: 1996756X
DOI: 10.1117/12.974688
Rights: © SPIE
Type: Conference Papers
Appears in Collections:Δημοσιεύσεις σε συνέδρια/Conference papers

Show full item record

Page view(s)

26
Last Week
1
Last month
2
checked on Nov 23, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.