A COMPARISON AIR TEMPERATURE AND LAND SURFACE TEMPERATURE TO DETECT AN URBANIZATION EFFECT IN JAKARTA, INDONESIA

摘要

This study is demonstrating the application of Landsat image for estimating land surface temperature (Ts) and air temperature (Ta) in Jakarta, Indonesia, using observed relationship between Ts and Ta. The use of satellite remote sensing data can help to overcome the spatial problem of estimating Ta particularly in areas with low station density using satellite-based land surface temperature estimation and ground-based relationship between Ts and Ta. The statistical approach was used in this study. Ts values obtained from Landsat 1989 and 2006. This validation was applied by comparing Landsat 2006 and ground based measurement observed in 2012. The result shows strong correlation between Landsat Ts and ground base Ts measurement (R~2= 0.733) which means this value is reliable to validate and represent actual land surface temperature. To understand the relationship between air temperature and land surface temperature on satellite image, a statistical approach was applied. The range of determination coefficient (R~2) between air and land surface temperature in ground-based measurement was 0.64.Therefore, it was indicated that the land surface temperature can be used as an indicator of air temperature in Jakarta.