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Proceedings Paper

Use of multitemporal remote sensing data for the detection of areas with lower temperature in Alfios River Basin, western Peloponnese, Greece
Author(s): Konstantinos G. Nikolakopoulos; Dimitrios A. Vaiopoulos; George Aim. Skianis
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Paper Abstract

The objective of this study was to use satellite thermal data for the detection of areas with lower temperature in Alfios River Basin, Greece. Alfios is the biggest river of the Peloponnese. The climate of the area is typically Mediterranean with rainy winter and very hot summer. Firstly we converted the radiation into Celsius Degrees in order to calculate the surface temperature. Then in order to better distinguish thermal deviations we have classified the temperatures in fifteen classes using the density slicing method. We proceeded to the control of the model accuracy using in situ temperature measurements for the days of the images acquisition. The results showed that the error is less than 0.3 °C in the temperature range or about half a tone unit value of TM & ETM band 6 and it is acceptable. We have mapped areas along the river channel that present 6-8 °C lower temperature than the rest of area. Even the third or second order branches of Alfios River create long lanes of lower temperature. Also the areas around the big artificial lakes of Pinios and Ladonas present significant lower temperature. Then we have checked the effect of the burnt areas to the temperature. We have noticed that the burnt areas present 6-10°C higher temperatures than the neighborhood areas. The general conclusion is that the TM & ETM thermal bands can be used for the creation of temperature profiles across large areas where the construction of climatological stations is difficult.

Paper Details

Date Published: 24 February 2004
PDF: 11 pages
Proc. SPIE 5232, Remote Sensing for Agriculture, Ecosystems, and Hydrology V, (24 February 2004); doi: 10.1117/12.510818
Show Author Affiliations
Konstantinos G. Nikolakopoulos, Univ. of Athens (Greece)
Dimitrios A. Vaiopoulos, Univ. of Athens (Greece)
George Aim. Skianis, Univ. of Athens (Greece)

Published in SPIE Proceedings Vol. 5232:
Remote Sensing for Agriculture, Ecosystems, and Hydrology V
Manfred Owe; Guido D'Urso; Jose F. Moreno; Alfonso Calera, Editor(s)

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