Author(s)

A. Alkasim^1*, A. A. Hayatu², M. K. Salihu³

¹Department of Physics, Modibbo Adama University of Technology, Yola, Nigeria.
²Department of Physics, Adamawa State College of Education, Hong, Nigeria.
³Department of Pure and Applied Physics, Adamawa State University, Mubi, Nigeria.

The land surface temperature of Yola (latitude 9°11'N to 9°20'N and longitude 12°23'E to 12°33'E) North-eastern Nigeria was estimated using landsat-7 ETM+ satellite images. ENVI 4.5 software, and Thermal band 6.2 were used for the estimation, land surface temperature, from Landsat-7 ETM+ imagery sensors acquired as a digital number (DN) range from 0 - 255 in thermal band. DNs were first converted to radiance values in Wm^-2·sr^-1·μm^-1, using the bias and gain values specific to an individual pixel, then the radiance was converted eventually to surface temperature (in Kelvin). The results indicate that there is a significant variation in land surface temperature between the two different seasons in Yola. The mean surface temperatures estimated are 307.9 K and 298.1 K during the dry and rainy seasons respectively. The result obtained was compared with data obtained from Meteorological Department. The estimated land surface temperature showed a good correlation, with a difference of 2 K to 3 K.

Land Surface Temperature, Satellite Images, Thermal Band, Radiance and Landsat Data

Alkasim, A. , Hayatu, A. and Salihu, M. (2018) Estimation of Land Surface Temperature of Yola, North Eastern Nigeria Using Landsat-7 ETM+ Satellite Image. Energy and Power Engineering, 10, 449-456. doi: 10.4236/epe.2018.1010028.