Urban-Rural Temperature Differences in Lagos

Ojeh, Vincent Nduka; Balogun, Ahmed A.; Okhimamhe, A. A.

doi:10.3390/cli4020029

Cited by 59 publications

(46 citation statements)

References 26 publications

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“…The study found that maximum nocturnal LST magnitudes in Lagos can exceed 7°C during the dry season, and during the rainy season, wet soils in the rural environment supersede regional wind speed as the dominant control over LST magnitude. The study of Ojeh et al (2016) was in agreement with Balogun et al (2012), which found that nocturnal heat island was more frequent than the day-time heat island over Akure city, Nigeria. More recently, studies have employed remote sensing and GIS techniques to analyze and quantify the effect of Land-use/Land-cover (LULC) change on LST (Ishola.…”

Section: Introductionsupporting

confidence: 84%

“…In view of the above, earlier studies have identified LST also known as surface urban heat island (SUHI) by assessing measured rural-urban temperature differences (Balogun et al, 2012;Ojeh et al, 2016) in some areas in Nigeria. For instance, Ojeh et al (2016) investigated urban temperature conditions based on the hourly air temperature difference between City hall (Urban area) and Okoafo (Rural area) in Lagos, Nigeria. The study found that maximum nocturnal LST magnitudes in Lagos can exceed 7°C during the dry season, and during the rainy season, wet soils in the rural environment supersede regional wind speed as the dominant control over LST magnitude.…”

Section: Introductionmentioning

confidence: 99%

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Spatial pattern of Land Surface Temperature over Umuahia North and Bende LGA, Abia State, Nigeria

Uchendu¹,

Kanu²,

Kanu³

et al. 2019

Nig. J. Env. Sci. & Tech.

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This study evaluated the Spatial pattern of Land Surface Temperature (LST) over Umuahia North (Urban Area) and Bende LGA (Rural Area), Abia State, Southeast Nigeria. LANDSAT Imagery spanning Row 056 and Path 188, with 30m spatial resolution was captured on the 17th of May, 2018. Temperature and relative humidity were measured using a thermometer and multi-purpose Hydro-20 - 100 % model. Eight measurements were taken for each parameter at an interval of 8 hours at an elevation of 1.5m above the ground. Coordinates and elevation of the points were captured using a Garmin Handheld GPS. Data obtained were imported in compatible formats with ArcGIS 10.5 and the values for the un-sampled locations within the study area was determined through the interpolation of the collected data. A subset covering the study area was extracted for bands 1,2,3,4 and 5. Bands 1, 2 and 3 which are visible bands were used in generating a true colour composite image of the study area; the bands 4 and 5 which are not visible bands were used for the NDVI (Normalized Differential Vegetation Index). Result showed that Bende LGA had a vegetal cover of 45,741.26hectares out of a total of 60,152.76 hectares while Umuahia North had 19,689.09 hectares of vegetal cover out of a total of 24,459.75 hectares. Umuahia North had an average daily temperature of 31.309̊ C while Bende had 27.405̊ C. The average relative humidity in Bende LGA was 82.37% while Umuahia North was 67.274%. In conclusion, the study showed the existence of heat islands in the urban areas in Umuahia North LGA which was characterized by higher temperature but lower relative humidity. The heat island could be attributed to the gradual loss of vegetation cover and the increase in built-up environments in Umuahia North LGA.

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Section: Introductionsupporting

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Spatial pattern of Land Surface Temperature over Umuahia North and Bende LGA, Abia State, Nigeria

Uchendu¹,

Kanu²,

Kanu³

et al. 2019

Nig. J. Env. Sci. & Tech.

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“…Urbanization provides a positive development for the population, but it also has negative consequences [3,4] for the environment, such as the urban heat island (UHI), high population density, emission of greenhouse gasses (GHG), air pollution, and high demand for energy [5,6]. Changing the composition of the urban land structure and transforming the naturally vegetated land into the built-up area have been mainly caused by the formation of the UHIs [6,7].…”

Section: Introductionmentioning

confidence: 99%

“…Regarding this context, the authors focus Lagos City as a research field in this study. Lagos City is the landmark of the Federal Republic of Nigeria and the second most populous and fast-growing city in Africa [5,8]. Lagos was developed as a port city since the colonial period, and it was developed after the petroleum booming between 1970 and 1980 [16,17].…”

Section: Introductionmentioning

confidence: 99%

Impact of Urban Surface Characteristics and Socio-Economic Variables on the Spatial Variation of Land Surface Temperature in Lagos City, Nigeria

et al. 2018

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The urban heat island (UHI) and its consequences have become a key research focus of various disciplines because of its negative externalities on urban ecology and the total livability of cities. Identifying spatial variation of the land surface temperature (LST) provides a clear picture to understand the UHI phenomenon, and it will help to introduce appropriate mitigation technique to address the advanced impact of UHI. Hence, the aim of the research is to examine the spatial variation of LST concerning the UHI phenomenon in rapidly urbanizing Lagos City. Four variables were examined to identify the impact of urban surface characteristics and socio-economic activities on LST. The gradient analysis was employed to assess the distribution outline of LST from the city center point to rural areas over the vegetation and built-up areas. Partial least square (PLS) regression analysis was used to assess the correlation and statistically significance of the variables. Landsat data captured in 2002 and 2013 were used as primary data sources and other gridded data, such as PD and FFCOE, were employed. The results of the analyses show that the distribution pattern of the LST in 2002 and 2013 has changed over the study period as results of changing urban surface characteristics (USC) and the influence of socio-economic activities. LST has a strong positive relationship with NDBI and a strong negative relationship with NDVI. The rapid development of Lagos City has been directly affected by conversion more green areas to build up areas over the time, and it has resulted in formulating more surface urban heat island (SUHI). Further, the increasing population and their socio-economic activities including industrialization and infrastructure development have also caused a significant impact on LST changes. We recommend that the results of this research be used as a proxy tool to introduce appropriate landscape and town planning in a sustainable viewpoint to make healthier and livable urban environments in Lagos City, Nigeria

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“…The released anthropogenic heat is trapped in a very shallow surface layer where the atmospheric stability impedes the vertical mixing. In the stably stratified atmosphere, even relatively modest heat fluxes can significantly raise temperatures as they warm only a limited amount of air (Esau et al 2012, Davy and Esau 2014, 2016. This mechanism gives an amplifying factor to the UHI in mid-sized arctic cities.…”

Section: Discussionmentioning

confidence: 99%

A high density urban temperature network deployed in several cities of Eurasian Arctic

Konstantinov

Varentsov

Esau

2018

Environ. Res. Lett.

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Urban-Rural Temperature Differences in Lagos

Cited by 59 publications

References 26 publications

Spatial pattern of Land Surface Temperature over Umuahia North and Bende LGA, Abia State, Nigeria

Spatial pattern of Land Surface Temperature over Umuahia North and Bende LGA, Abia State, Nigeria

Impact of Urban Surface Characteristics and Socio-Economic Variables on the Spatial Variation of Land Surface Temperature in Lagos City, Nigeria

A high density urban temperature network deployed in several cities of Eurasian Arctic

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