Remote Sensing and GIS Based Assessment of Urban Heat Island Pattern in Kaduna Metropolis
DOI:
https://doi.org/10.53555/ans.v3i6.82Keywords:
Anthropogenic forces, LULC, Land Surface Temperature, Remote Sensing/GIS, Urban Heat IslandAbstract
This study examines the pattern and distribution of heat island in Kaduna metropolis based on Landsat
Imageries of 1995, 2005 and 2015, whose spatial resolution is sufficient for measurement of some important environmental parameters.The study first identified patterns of land cover changes between the periods and investigated their d from the corrected image and a relationship with Land surface temperature (LST) was established based on Environmental Criticality Index (ECI). Land surface temperature (LST) was retrieved using the mono-window algorithm with area of UHI identified in the study area. Results show that Kaduna city’s urban heat island effect is on the increase, substantial and in variance, which could be visually characterized by the spatial pattern of retrieved thermal properties. The study, therefore, concluded that different Land Use Land Cover (LULC) revealed varying temperature, and identified UHI was apparent and more conspicuous in the 2015 as compared to 1995 and 2005 within the metropolis. Particularly, due to the scarcity of vegetation, some hotspots are built-up areas, bare surfaces, central business districts (CBD) areas, and the surface temperature of which is even slightly higher than suburbs. This study suggested a strict adherence to Kaduna master plan, vegetation regeneration and establishment of green areas and parks (go-green initiatives), reflective roofing materials, and lightening of pavements as adaptive/mitigation measures against UHI in the study area.
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