Use of multitemporal remote sensing data for the detection of areas with lower temperature in Alfios River Basin, western Peloponnese, Greece

Konstantinos G. Nikolakopoulos; Dimitrios A. Vaiopoulos; George Aim. Skianis

doi:10.1117/12.510818

24 February 2004 Use of multitemporal remote sensing thermal data for the detection of areas with lower temperature in Alfios River basin western Peloponnese, Greece

Konstantinos G. Nikolakopoulos, Dimitrios A. Vaiopoulos, George Aim. Skianis

Author Affiliations +

Proceedings Volume 5232, Remote Sensing for Agriculture, Ecosystems, and Hydrology V; (2004) https://doi.org/10.1117/12.510818
Event: Remote Sensing, 2003, Barcelona, Spain

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.

Citation Download Citation

Konstantinos G. Nikolakopoulos, Dimitrios A. Vaiopoulos, and George Aim. Skianis "Use of multitemporal remote sensing thermal data for the detection of areas with lower temperature in Alfios River basin western Peloponnese, Greece", Proc. SPIE 5232, Remote Sensing for Agriculture, Ecosystems, and Hydrology V, (24 February 2004); https://doi.org/10.1117/12.510818

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KEYWORDS

Earth observing sensors

Landsat

Satellites

Temperature metrology

Climatology

Remote sensing

Satellite imaging

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