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ASSESSMENT OF LAND SURFACE TEMPERATURE OF MINNA CITY AND ITS ENVIRONS, NIGER STATE, NIGERIA

ASSESSMENT OF LAND SURFACE TEMPERATURE OF MINNA CITY AND ITS ENVIRONS, NIGER STATE, NIGERIA

ADAMA, C. K.,

Department of Geography, Ibrahim Badamasi Babangida University, Lapai, Nigeria. Email:pnwaerema486@gmail.com.

Abstract

This study was carried out to assess the Land Surface Temperature (LST) of Minna City and Environs, Niger State, Nigeria. Land surface temperature has caused significant effects to water bodies, loss of vegetal cover and animal species, loss of city comfort as well as critical health condition of city residents. The study utilized satellite remote sensing and Geographic Information System (GIS) to derive LST imageries. Landsat 5, 7 and 8 were used to generate LST of Minna Town and environs from 2002 to 2023. The results showed that in 2002, land surface temperature varied between 21.50^oC and 46.95^oC with a range of 25.45.5^oC indicating the highest range in the study. LST increasingly spread to all parts of the city indicating areas of high urban pavement material concentration and growth. In 2014, LST varied between 11.39oC and 41.31oC ranging 29.92oC indicating a tremendous rise in LST. In 2023, LST varied between 12.31^oC and 43.12^oC with a range of 30.81⁰C showing the year with the highest range of LST growth. The study highlights the urgent need for strategic urban planning interventions to mitigate the adverse impacts of rising LST and urban heat islands in Minna. Incorporating more green infrastructure, regulating pavement expansion, and managing urban growth can substantially reduce surface temperatures and improve human comfort.

Keywords: Assessment, Land, Surface, Temperature, City, Environs

Introduction

Land Surface Temperature (LST) is the degree of hotness a given surface of the earth would be when touched. It is the temperature recorded by a satellite pass on a particular land surface when viewed from above (Gao & Hu, 2017).  The view could be buildings, grassland, roofs, water bodies, asphalt roads and the general urban concrete materials. LST has been recognized to spread across the urban surface areas. For instance, Wang & Li (2019) in China, Beijing noted temperature variation across different land use types us

ing Remote Sensing with the center bearing the highest temperature intensity of 24.1°C. Ogunleye &