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Remote Sens. 2014, 6(3), 2494-2513; doi:10.3390/rs6032494
Article

Spatio-Temporal Assessment of Tuz Gölü, Turkey as a Potential Radiometric Vicarious Calibration Site

1,2,* , 2
 and 1
Received: 15 November 2013; in revised form: 5 March 2014 / Accepted: 10 March 2014 / Published: 20 March 2014
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Abstract: The paper provides an assessment of Tuz Gölü, a site in Turkey proposed for the radiometric vicarious calibration of satellite sensors, in terms of its spatial homogeneity as expressed in visible and near-infrared (VNIR) wavelengths over a 25-year period (1984–2009). By combining the coefficient of variation (CV) and Getis statistic (Gi*), a spatially homogenous and temporally stable area at least 720 m × 330 m in size was identified. Analysis of mid-summer Landsat Thematic Mapper (TM) images acquired over the period 1984–2009 showed that the hemispherical-directional reflectance factor of this area had a spatial variability, as defined by the CV, in the range of 0.99% to 3.99% in Landsat TM bands 2–4. This is comparable with the reported variability of other test sites around the world, but this is the first time an area has been shown to have this degree of homogeneity over such a long period of time.
Keywords: vicarious calibration; validation; spatial variation; radiometry; Getis statistic vicarious calibration; validation; spatial variation; radiometry; Getis statistic
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Odongo, V.O.; Hamm, N.A.S.; Milton, E.J. Spatio-Temporal Assessment of Tuz Gölü, Turkey as a Potential Radiometric Vicarious Calibration Site. Remote Sens. 2014, 6, 2494-2513.

AMA Style

Odongo VO, Hamm NAS, Milton EJ. Spatio-Temporal Assessment of Tuz Gölü, Turkey as a Potential Radiometric Vicarious Calibration Site. Remote Sensing. 2014; 6(3):2494-2513.

Chicago/Turabian Style

Odongo, Vincent O.; Hamm, Nicholas A.S.; Milton, Edward J. 2014. "Spatio-Temporal Assessment of Tuz Gölü, Turkey as a Potential Radiometric Vicarious Calibration Site." Remote Sens. 6, no. 3: 2494-2513.


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