Experimental investigation of the impact of urban fabric on canyon albedo using a 1:10 scaled physical model

• The impact of urban fabric on street canyon albedo was experimentally investigated. A detailed 1:10 scaled physical model a residential area in London developed. Canyon varies diurnally, seasonally, with cloud coverage and rainfall. Glazed façades lead to lower than brickwork aluminium cladding. Brickwork contribute higher the infrared. This paper presents findings from large-scale experiment albedo, aimed at informing development an calculator for London, empirical predict changes relation solar altitude. Through different material applications actual area, study assessed effect street-level materials three common façade types alongside canyon’s reflective power infrared, rain. results showed that addition concrete paving level increased by 9%, while substitution tarmac grass 70%. cladding were seen significantly curtain wall across measured irradiance spectrum. also revealed highly dynamic nature consistent rainfall-induced reduction range 22–36% throughout experimental phases. this can inform planning policy making directed tackling heat island effect.