Ecological Evaluation of Urban Heat Island Impacts in Abuja Municipal Area of FCT Abuja, Nigeria

Thomas .U. Omali¹

1. National Biotechnology Development Agency (NABDA), Fed. Min. of Sci. & Tech., Abuja, Nigeria.

Section:Research Paper, Product Type: Journal-Paper
Vol.7 , Issue.1 , pp.66-72, Mar-2020

Online published on Apr 10, 2020

Copyright © Thomas .U. Omali . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
The rate of urbanization in recent time has increased due to ever-increasing population density, which usually culminates in the modification of land use/cover (LULC) structure. This change in LULC give rise to the increase in impervious surface cover, which causes Urban Heat Island (UHI) due to alteration in the thermal characteristics of the urbanized area. The purpose of this study is to conduct a spatiotemporal estimation of Urban Heat Island (UHI) effects in Abuja Municipal Area Council (AMAC) of FCT Abuja, Nigeria for 1987, 2001, and 2016. This was achieved by the computation of Normalized Difference Vegetation Index (NDVI), Land Surface Temperature (LST), and Urban Thermal Field Variance Index (UTFVI). The UTFVI was eventually used to express the UHI impacts in the study area based on ecological evaluation index classes (1-6). Finally, the results from the study reveal that there is no UHI effect in classes 4-6 throughout the study epoch while class 3 of 2016 indicates strong UHI, and classes 1 to 3 of 1987 and 2001, as well as classes 1 and 2 of 2016 exhibit the strongest UHI.

Key-Words / Index Term :
Index, landsat, LST, microclimate, remote sensing, UTFVI

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