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Title: Analyzing the influence of urban morphology on thermal microclimate in a temperate maritime climate
Author: Al-Sudani, A. H.
Awarding Body: University of Liverpool
Current Institution: University of Liverpool
Date of Award: 2018
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One of the severest impacts of climate change is temperature increase, and this will be especially evident in urban areas. This study is investigating the influence of urban morphology on the thermal microclimate of urban spaces. Air temperature measurements were conducted at twelve locations, for both hot and cold seasons under the temperate maritime climate, in a residential development in the city of Liverpool, UK. Detailed analyses were undertaken to investigate and establish possible links between the urban morphology and the observed variations in air temperature around the residential complex especially in hot season. Seven well-known urban parameters were used to get the numerical description of morphology around unsymmetrical and non-directional urban spaces. Three novel parameters have been developed by this study. One of them is intended to measure the compactness of an urban space while the other two are introduced as a novel approach by embedding the cardinal directions in the urban parameters. The directions are used usually as independent parameters to classify the urban canyons (directional space) and compare their results in the urban environmental studies. Linear regression has been utilized to develop statistical models between the solar radiation, ambient air temperature and each of the ten urban morphological parameters as independent variables, while the on-site measured air temperatures were used as a dependent variable. About 400 statistical models were produced. Comparisons between adjusted R2 values were held to determine the effect size of each urban parameter on air temperature. The increasing or decreasing of air temperature under the effect of the urban parameter was deduced by the signs of coefficients of the parameters in the regression models. Overall, the analyses showed the superiority of the developed novel parameters that were based on the idea of direction versus other parameters in relation to the interpretation of differences in air temperature on a spatial basis. The results of this study may support the development of urban planning regulations, and may help the development process of numerical models to predict variations in air temperatures from the effect of urban morphology.
Supervisor: Sharples, Steve ; Chen, Fei Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral