气候变化领域集成服务门户(CCPortal): Spatial distribution of heat vulnerability in Toronto, Canada

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DOI	10.1016/j.uclim.2024.101838
	Spatial distribution of heat vulnerability in Toronto, Canada
	Bu, Shuchen; Smith, Karen L.; Masoud, Fadi; Sheinbaum, Alexandra
发表日期	2024
ISSN	2212-0955
起始页码	54
卷号	54
英文摘要	The frequency, intensity and duration of heatwaves are expected to increase in Toronto, Canada due to both climate change and the urban heat island effect, which will result in enhanced heat vulnerability among a population of almost three million. Therefore, designing appropriate heat management plans requires information about how heat vulnerability is distributed across the city. To fill the knowledge gap, two distinct methods are examined in this study to quantitatively measure the heat vulnerability at the dissemination area level. Both heat vulnerability indices (HVIs) consist of three dimensions, exposure, sensitivity and adaptive capacity, that are aggregated from remotely sensed land surface temperature and socio-economic features collected from census data. The first method uses principal component analysis to derive an HVI, and the second, simpler method assigns equal weight to each input feature to derive an HVI. The HVIs display a similar U-shaped pattern of high heat vulnerability across Toronto, with low heat vulnerability areas primarily located along the Lake Ontario shoreline and throughout the fluvial ravine system. Further cluster analysis reinforces this spatial pattern. Notably, this study highlights that low-income tower block communities are significantly more vulnerable to heat than the city average. The qualitative consistency between the two HVI methods allows for ease of adoption for future use or regular operational updates. Integration of HVI updates into municipal operations can allow city planners and managers to measure, analyze and visualize the heat vulnerability consistently over time and can provide decision-support for heat emergency preparedness and response in Toronto.
英文关键词	Urban Heat Island; Urban heat vulnerability; Heat vulnerability index; Principal component analysis; Spatial analysis; Urban landcover
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:001199137300001
来源期刊	URBAN CLIMATE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300498
作者单位	University of Toronto; University Toronto Scarborough; University of Toronto
推荐引用方式 GB/T 7714	Bu, Shuchen,Smith, Karen L.,Masoud, Fadi,et al. Spatial distribution of heat vulnerability in Toronto, Canada[J],2024,54.
APA	Bu, Shuchen,Smith, Karen L.,Masoud, Fadi,&Sheinbaum, Alexandra.(2024).Spatial distribution of heat vulnerability in Toronto, Canada.URBAN CLIMATE,54.
MLA	Bu, Shuchen,et al."Spatial distribution of heat vulnerability in Toronto, Canada".URBAN CLIMATE 54(2024).