Spatial Analysis on Intra-Urban Temperature Variation under Extreme Hot Weather by Incorporating Urban Planning and Environmental Parameters: A pilot study from Hong Kong
Refereed conference paper presented and published in conference proceedings


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AbstractThe number of extreme hot weather events have raised significantly in Hong Kong. Due to urban heat island effect, urban thermal environment of Hong Kong has been deteriorated. However, there is limited spatial understanding of intra-urban temperature variation under extreme hot weather conditions and climate-sensitive design for reducing heat load in severe heat events. Thus, there is a need to analyse the spatial distribution of intra-urban temperature variation of extreme hot weather and the impact of urban environment parameters on intra-urban temperature differences.
In this paper, firstly, hourly air temperature records from 40 Hong Kong Observatory stations from 2011 to 2015 were collected to analysis hot night and very hot day. Secondly, for spatially mapping the very hot days and hot nights, kriging, a geostatistical interpolation algorithm, was adopted. Thirdly, urban environmental parameters (digital elevation model information, sky view factor and the NDVI) were incorporated in co-kriging interpolation for a more comprehensive understanding of the correlation of extreme hot weather and their spatial patterns. The generated maps of very hot day and hot night can provide better understanding of intra-urban temperature differences under extreme hot weather events and help to create climate-sensitive design strategies to cope with climate change locally.
All Author(s) ListMeng Cai, Chao Ren, Kevin Ka-Lun Lau, Yong Xu
Name of ConferencePassive Low Energy Architecture (PLEA) 2017 Conference
Start Date of Conference02/07/2017
End Date of Conference05/07/2017
Place of ConferenceEdinburgh
Country/Region of ConferenceGreat Britain
Proceedings TitleProceedings of 33rd PLEA International Conference
Year2017
Month7
Volume Number1
Pages26 - 32
ISBN978-0-9928957-5-4
LanguagesEnglish-United Kingdom

Last updated on 2018-17-05 at 12:13