1. INTRODUCTION
Global warming is the significant environmental problem which currently and greatly affects the
humanity. All countries realize such a problemand try to find solutions. Remote sensing
technology has become an effective supporting toolfor researching and monitoring the problem.
The satellite data are exploited to apply to estimate land and water surface temperature changes
as well as global changes measuring. Since satellite data are available for large areas, multi-temporal data and multi-spectral bands. Landsat-5 TM satellite is the most widely-used satellite
in environmental research applications and the band 6 of TM (TM6) data can be used to analyze
land surface thermal radiation and LST. Spatial resolution of TM6 is higher than other thermal
data, so TM6 data is a better choice than ones when higher spatial resolution is required in an
application (Zhangyan, Yunhao, & Jing, 2006). There are three types of methods which have
been developed to retrieve LST from at-sensor and auxiliary data: Single-Channel method,
Split-Window Technique and Multi-Angle Method. Because the last two methods require at
least two channels, Single-Channel method is the only method that can be applied to the Landsat
platform, with one thermal channel (Rong-bo et al., 2007).