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Updated: Aug 12, 2026

Comparative Study of Simulation of Temperature Rise in Ring Main Unit
Published on: July 5, 2024
A national-scale assessment of the impact of canals on urban temperatures
M D Tomkins1, H McDonald2, J J Huck3
1MCGIS, Department of Geography, School of Environment, Education and Development, The University of Manchester, Manchester, UK. matthew.tomkins@manchester.ac.uk.
Abstract:
Urban populations are particularly vulnerable to heat-related mortality and morbidity. Climate-responsive urban design, which can include development of green and bluespaces, has the potential to offset climate change-related impacts. Compared to greenspaces, the effects of bluespaces on urban temperatures have received comparatively little attention, with uncertainty regarding the magnitude of urban cooling. In this study, we develop an energy balance model to estimate the thermal effects of canals and apply this to the canal network of Great Britain and Ireland. Here we show that the modelled canals provide an average annual daytime cooling effect of ~0.8 °C (0.7 - 1 °C) within the immediate vicinity of the canal network, with more pronounced cooling during spring and early summer (~1.2 - 1.4 °C) and during heatwaves (~1.5 - 2.3 °C). While thermal effects are not exclusively positive, our results indicate that canals can improve thermal comfort and reduce heat risk, with related benefits for population health and wellbeing.
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