Different explanations for surface and canopy urban heat island effects in relation to background climate

Yang, Liu, Li, Qi, Li, Qiong, Zhao, Lei, Luo, Zhiwen ORCID: https://orcid.org/0000-0002-2082-3958 and Liu, Yan 2024. Different explanations for surface and canopy urban heat island effects in relation to background climate. iScience 27 (3) , 108863. 10.1016/j.isci.2024.108863

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Abstract

The background climatic conditions and urban morphology greatly influence urban heat island effects UHIs, but one size fits all solutions are frequently employed to mitigate UHIs. Here, attribution models for surface UHIs (SUHIs) and canopy UHIs (CUHIs) were developed to describe UHIs formation. The contribution of factors to SUHIs and CUHIs shows similar dependencies on background climate and urban morphology. Furthermore, the factors that mainly contributed to CUHIs were more complex, and anthropogenic heat was the more critical factor. Influence from urban morphology also highlights that there is no one-size-fit-all solution for heat mitigation at the neighborhood. In particular, maintaining a low building density should be prioritized, especially mitigating CUHIs. Moreover, it is more effective to prioritize urban irrigation maintenance over increasing green cover in arid regions, but the opposite in humid regions. The work can provide scientific evidence to support developing general and regional guidelines for urban heat mitigation.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Architecture
Publisher:	Cell Press
ISSN:	2589-0042
Date of First Compliant Deposit:	12 January 2024
Date of Acceptance:	8 January 2024
Last Modified:	06 Mar 2024 15:35
URI:	https://orca.cardiff.ac.uk/id/eprint/165429

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