The Accuracy of LCZ maps Generated by the World Urban Database and Access Portal Tools (WUDAPT) Method: A Case Study of Hong Kong
Refereed conference paper presented and published in conference proceedings


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AbstractThe Urban Heat Island (UHI) is a hot topic, especially in Asian cities, because their booming economics and rapid urbanization have intensified the UHI effect. The Local Climate Zone (LCZ) scheme was developed by Stewart and Oke to provide researchers worldwide with a standard way to conduct urban heat island studies. Recently, the World Urban Database and Access Portal Tools (WUDAPT) and its level 0 method have emerged as new initiatives to generate LCZ maps of cities around the world by using free online resources. Hong Kong is a high-density city with its own complex urban morphology types and characteristics. It was therefore selected as a case study to examine whether or not the WUDAPT level 0 method is applicable to high density cities. In this paper, the preliminary results from adopting the WUDAPT level 0 are given. Three versions of a Hong Kong LCZ map have been developed to check and understand the following issues: 1) to check the overall accuracy of LCZ classes of the WUDAPT Level 0 product; 2) to find out the accuracy of detected built up areas of Hong Kong (mainly LCZ 1-6); 3) to find out how the training sample's size (or selecting area) affects its corresponding LCZ class accuracy; 4) to evaluate the WUDAPT level 0 method's performance. The study results can help other researchers of high density cities to understand the WUDAPT's advantages and limitations better, and also further develop the WUDAPT Method.
All Author(s) ListREN Chao, WANG Ran, CAI Meng, XU Yong, ZHENG, Yingsheng, NG Yan Yung
Name of ConferenceThe Fourth International Conference on Countermeasure to Urban Heat Islands (4th IC2UHI)
Start Date of Conference30/05/2016
End Date of Conference01/06/2016
Place of ConferenceSingapore
Country/Region of ConferenceSingapore
Proceedings TitleThe Fourth International Conference on Countermeasure to Urban Heat Islands (4th IC2UHI)
Detailed descriptionorganized by National University of Singapore,
Year2016
Month5
Place of PublicationSingapore
Pages11
LanguagesEnglish-United Kingdom
Keywordsurban morphology; database; urban climate

Last updated on 2018-20-01 at 19:55