Assessing the Urban Heat Island in Major Urban Centres with the Use of Indicators
Abstract
Remote sensing techniques have been applied in urban climate studies mainly for analyzing land surface temperature (LST) patterns and its relationship with surface characteristics, assessing urban heat island (UHI) and detecting land use/land cover (LULC) changes that occur frequently in urban and peri-urban areas as a consequence of urbanization. In terms of LULC changes, there are Earth Observation (EO) - based indices that distinguish the urbanized areas from the non-urbanized areas, i.e. the normalized difference built-up index (NDBI) [1] and the index-based built-up index (IBI) [2] that are proposed for the rapid extraction of built-up features in satellite imagery. In this study an application of these indices to a time-series of Landsat satellite images is attempted so as to depict the built-up area evolution. Results are correlated to the spatial variation of land surface temperature, which in turn supports the recognition and justification of the presence and the extent of Surface Urban Heat Island (SUHI).
- Publication:
-
Dragon 3Mid Term Results
- Pub Date:
- November 2014
- Bibcode:
- 2014ESASP.724E.142P