Journal
INTERNATIONAL JOURNAL OF REMOTE SENSING
Volume 29, Issue 10, Pages 2799-2818Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/01431160701408360
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The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) was used to derive land surface temperatures to quantify the night-time urban heat island (UHI) effect in Metro Manila. Temperature differences between Metro Manila and its adjacent rural towns were compared to determine heat island intensity and analyse spatial variation of surface temperature. Transects were drawn across from the rural to the urban region to characterize the UHI profile and the Normalized Difference Vegetation Index (NDVI) was used to examine the relationship between amount of vegetation and temperature. The thermal images revealed the highest UHI intensity to be 2.96 degrees C with the presence of a heat island existing in the central part of the city. The transects described the cross-sectional heat island profile characterized by gradients of 'cliffs', 'plateaus' and a 'peak' occurring in the city centre. The study also showed an inverse relationship between NDVI and temperature, which suggests that increasing the amount of plants in cities can reduce the UHI effect.
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