Multitemporal images acquired by Land sat?,? and ? TM and ETM+ sensors on June ?? ????, August ?? ???? and August ? ???? have been used to study and monitor the relationship between temporal dynamics of LST in relation to Land use/cover characteristics in Tabriz metropolitan area. The classification of images and extraction of statistics of each class showed a strong relationship between land use type and surface temperature using correlation analysis and multivariate regression showed the efficiency of vegetation cover in mitigating surface temperature. Temporal variability of thermal data and vegetation cover has been studied using normalized Fr/T* space. Temporal trajectory of pixels in the mentioned space showed that the changes due to urbanization could be observed as pixel migration from comfort state ( low temperature , dense vegetation) to uncomforted one ( high temperature, sparse vegetation) in the Fr/T* space. The results show that the adopted method is efficient and could be used to study and monitor temporal and spatial changes of UHI in built-up areas.
)