Surface Urban Heat Island Projections and Assessing it’s Impacts on Urban Utilities: The Case of Gondar City

Telay, Gashaw

dc.contributor.author	Telay, Gashaw
dc.date.accessioned	2024-09-04T12:27:34Z
dc.date.available	2024-09-04T12:27:34Z
dc.date.issued	2024-06
dc.identifier.uri	http://ir.bdu.edu.et/handle/123456789/15939
dc.description.abstract	Urban heat island is a phenomena occurring due to differences in warming between urban and rural areas. The issue was known since 1818 after the release of the research work of Luke Howard known as the climate of London. Whereas in Ethiopia in general, and in the study area in particular, it is not common to see researches focusing on heat island. There are researches on urban heat island causative factors but there lack studying the present and future impacts on urban utilities. Therefore, this study was focusing on analyzing spatial and temporal variations and future trends of heat island, prominent driver which lead to this variation, the implications of climate change on surface urban heat intensity, and impacts of the excessive heat intensity. Data obtained from United States Geological Survey/USGS/, and government offices include satellite images from 1990-2020, temperature and rainfall data from 1990-2020, water consumption data and electric consumption data from 2008-2020. These were analyzed using geospatial techniques Mann-Kendall and homogeneity test models. Maximum likelihood algorithm, Oke’s urban heat island (UHI) algorithm, multiple linear regression, the Likert scale, path model and Auto Regressive Integrated Moving Average (ARIMA) Model. The findings of the study ascertained urban heat intensity in the study area in 1990 was 3°C and in 2020 it was 4.6°C, and in 2024 it is 3.1°C and in 2040 it will be 3.04°C which implies future intensification of heat intensity but with a lesser extent from 1990-2020. The southern, southwestern and southeastern parts of the City and its outskirts were with highest Land Surface Temperature record in 2013 which was estimated to be 42°C and the northern, northcentral, northwestern and northeastern parts of the City and its outskirts were with lowest land surface temperature record in 1990 which was estimated to be 32°C. In addition to this, population density was identified as the prominent cause for urban heating in the study area. Moreover, climate change which causes urban warming was ascertained to be the worries of the area. The p-value and the Sens slope indicated that the air temperature was showing an upward trend. Furthermore, water consumption was 2.378 m 3 /person/annum/1°C while electricity consumption was 1.616 kWh/person/annum/1°C and future water and electricity consumption will be 4 m 3 /person/annum/1°C and 2.9 kWh /person/annum/1°C. From this it can be concluded that urban heating has an impact on urbanites. Therefore, it is recommended that the city administration should work on containing the incoming population from nearby satellite towns and nearby rural areas through the development of infrastructures and introducing villagization programs. It should also work on urban greeneries which have less LST records. Furthermore, since it was impossible to deter the construction industries, emphasis should be given to controlling the design, type of construction materials, and the finishing materials used. The construction materials should be high albedo to reduce the heating effects of buildings. The city administration should design a workable policy that can enable thermal management.	en_US
dc.language.iso	en_US	en_US
dc.subject	Geography and Environmental Studies	en_US
dc.title	Surface Urban Heat Island Projections and Assessing it’s Impacts on Urban Utilities: The Case of Gondar City	en_US
dc.type	Thesis	en_US