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Int. J. Environ. Res. Public Health 2019, 16(3), 497; https://doi.org/10.3390/ijerph16030497

Spatiotemporal Prediction of Increasing Winter Perceived Temperature across a Sub-Tropical City for Sustainable Planning and Climate Change Mitigation

1
Department of Urban Planning and Design, The University of Hong Kong, Hong Kong
2
Department of Land Surveying and Geo-Informatics, The Hong Kong Polytechnic University, Kowloon, Hong Kong
3
School of Geographic Sciences, Guangzhou University, 510000 Guangzhou, China
4
Senseable City Laboratory, Singapore-MIT Alliance for Research and Technology, Singapore
5
Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic University, Hong Kong
*
Authors to whom correspondence should be addressed.
Received: 17 January 2019 / Revised: 2 February 2019 / Accepted: 4 February 2019 / Published: 11 February 2019
(This article belongs to the Special Issue Urban Environmental Quality)
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Abstract

Climate variability has been documented as being key to influencing human wellbeing across cities as it is linked to mortality and illness due to changes in the perceived weather cycle. Many studies have investigated the impact of summer temperature on human health and have proposed mitigation strategies for summer heat waves. However, sub-tropical cities are still experiencing winter temperature variations. Increasing winter perceived temperature through the decades may soon affect city wellbeing, due to a larger temperature change between normal winter days and extreme cold events, which may cause higher health risk due to lack of adaptation and self-preparedness. Therefore, winter perceived temperature should also be considered and integrated in urban sustainable planning. This study has integrated the increasing winter perceived temperature as a factor for developing spatiotemporal protocols for mitigating the adverse impact of climate change. Land surface temperature (LST) derived from satellite images and building data extracted from aerial photographs were used to simulate the adjusted wind chill equivalent temperature (AWCET) particularly for sub-tropical scenarios between 1990 and 2010 of the Kowloon Peninsula, Hong Kong. Compared with perceived temperature based on the representative station located at the headquarters of the Hong Kong Observatory, the temperature of half the study area in the Kowloon Peninsula has raised by 1.5 °C. The areas with less green space and less public open space in 2010 show higher relative temperatures. Socioeconomically deprived areas (e.g., areas with lower median monthly income) may suffer more from this scenario, but not all types of socioeconomic disparities are associated with poor sustainable planning. Based on our results and the “no-one left behind” guideline from the United Nations, climate change mitigation should be conducted by targeting socioeconomic neighborhoods more than just aging communities. View Full-Text
Keywords: climate change; community design; socioeconomic deprivation; sustainable planning; urban morphology climate change; community design; socioeconomic deprivation; sustainable planning; urban morphology
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Ho, H.C.; Abbas, S.; Yang, J.; Zhu, R.; Wong, M.S. Spatiotemporal Prediction of Increasing Winter Perceived Temperature across a Sub-Tropical City for Sustainable Planning and Climate Change Mitigation. Int. J. Environ. Res. Public Health 2019, 16, 497.

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