Urban Planning and Design to Mitigate Climate Change Impact: the Role of Heritage Conservation in a Dense Urban City Dr. Esther Yung Assistant Professor Collaborator: Prof. Edwin Chan The Hong Kong Polytechnic University Our Common Future Under Climate Change, International Scientific Conference 7-10 July, 2015 Paris, France
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Urban Planning and Design to Mitigate Climate Change Impact: the Role of Heritage
Conservation in a Dense Urban City
Dr. Esther YungAssistant Professor
Collaborator:
Prof. Edwin Chan
The Hong Kong Polytechnic University
Our Common Future Under Climate Change, International Scientific Conference
7-10 July, 2015 Paris, France
Aim of the study
To examine the roles that heritage buildings can play to mitigate the effects of climate change
Objectives
•To develop a robust spatial database of the existing built heritage sites and their relationship with the surrounding urban morphology and meteorological parameters
•to investigate how adaptive reuse of heritage buildings influences the social experience of urban space, and provide the adaptation to climate change
•To develop a set of general principles helping built heritage conservation to contribute to the mitigation of climate change effects in a dense urban city
Hong Kong- the dense urban city
• unique urban morphology in Hong Kong - uniform building heights, high towers and large podium
• lower permeability for urban air ventilation at pedestrian level
Major impacts of climate change • hotter weather, extreme climatic events, and sea level rise (Civic Exchange, 2008).• The Urban Heat Island effect - Heat stress
(UHI value was about 2.17oC)
Methodology1) construct systematic spatial data for the study areas with the aid of GIS and 3D modelling . The study maps include information on:
•Urban morphology data (the urban fabric, topography, land use, open space and greenery, spatial distribution of UHI in the surrounding areas and locations of historic building sites)
•Climatic data(wind velocity, ventilation paths, sea breezes and mountain winds, air temperature, Land Surface temperature (LST) and air humidity, etc.)
2) Field measurements of climatic conditions• Field measurements of the meteorological parameters
3) Design and conduct site questionnaire survey• measure the subjective thermal comfort of human beings at the sites (wind force, air
humidity, radiation, air temp.)• Elicit the preference of people using the site
Study Area – Central, Hong Kong
Study Area – Central, Hong Kong
Urban Climatic Map of Hong Kong
Urban Heat Island: A satellite image showing the high urban temperatures in the urban areas
- climate change effects on the physical condition of heritage buildings
- how heritage buildings can affect the social experience of people in urban space
- heritage designation system
Invited book chapter
Yung, E. H. K. and Chan, E. H. W. Climate change and built heritage conservation: the case of Hong Kong and Shanghai, April, 2015
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