Examining the impact of urban canyons morphology on outdoor environmental conditions in city centres with a temperate climate

The concept of future-proofing cities seeks to minimise environmental impacts by utilising various mitigation and adaptation techniques, specifically improving urban fabric. Studies on forms parameters have been extensively conducted in hot, arid humid climates while they less investigated temperate climates. In the UK, current local design guides meet needs designers planners, however, are still considered descriptive lack in-depth assessment. This study aims investigate recommended threshold values National Model Design Code against real sites with different canyons morphologies examine their impact outdoor conditions. used quantitative methods conducting a review study, survey UK modelling using simulation via RayMan IESVE. targeted pre-selected Cardiff Bristol that were identified as zones heat stress. results showed Aspect Ratio Sky View Factor (SVF) two significantly impacted conditions areas subsequently affecting Physiological Equivalent Temperature (PET). significant thermal performance canyons. findings demonstrated modifying width streets changing SVF resulted achieving positive during summer when both factors direct relationship. However, an inverse relationship, extreme cold stress winter. Therefore, maintaining relationship between would help improve