Local Climate Zone Map for China and Its Applications in Local Urban and Regional Development
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AbstractChinese cities have experienced a fast urbanization since the late 1970s and this urbanization trend may still need another 20-30 years before the whole process completes. Their urban residents are especially vulnerable to current and future climate hazards because of high population density, compact urban setting and infrastructure and socialeconomic activities in landscapes that are exposed to sea-level rise, warming trends, and other extreme weather events (WMO, 2003, IPCC, 2014, UN-Habitat, 2011) . In the meanwhile, due to lack of urban climatic consideration in local development, such fast urbanization in China has caused a series of urban environmental problems, such as urban heat island effect, the pollution of rivers and seas, air pollutant effects and air quality degradation. These problems must not be under estimated, since they not only directly impact local residents’ health condition, but also indirectly affect Korean, Japanese, and Taiwan people’s living quality. Thus, there is an increasing international focus on Chinese cities’ development and their environmental-related studies and a world-wide interest on developing a national-scale database on Chinese cities for scientific inquiry and policy formulation. The initial concept of the Local Climate Zone (LCZ) classification system was developed by Stewart and Oke (2012). It aims to characterize local urban surfaces with regard to their effect on local climate. Recently researchers mapped out LCZs mainly at individual city level. Given fast urbanization in developing countries and regions, there is a need to develop regional and national LCZ data and their corresponding maps. The study aims to contribute to this knowledge gap by: (a) applying the LCZ classification scheme into the Chinese cities by adopting the random forest classifier (Bechtel., 2015) to develop an open-access database; (b) using multisatellite image resources (Landsat 8, Sentinel-1 and Sentinel-2) to develop a national LCZ map of China with 100m resolution; (c) selecting the Pearl River Delta region as case study of mega-region to develop its historical LCZ mapping (from 1990s to 2010s) via transfer learning; and (d) testing these developed data into the Weather Research and Forecasting (WRF) model simulations to examine the pure urbanization impact on local climatic conditions for better policy and local action.
Acceptance Date23/02/2018
All Author(s) ListEdward Ng, C. Ren, Y. Xu, M. Cai, R. Wang, X. Li, M. Pesaresi, A. Florczyk, C. Corban, P. Politis, P. S. Yeung, W. P. Tse, M. F. Wong, J. C. H. Fung
Name of Conference10th International Conference on Urban Climate
Start Date of Conference06/08/2018
End Date of Conference10/08/2018
Place of ConferenceNew York
Country/Region of ConferenceUnited States of America
Year2018
Month8
LanguagesEnglish-United Kingdom
Keywordslocal climate zone map, urban development

Last updated on 2019-12-02 at 10:56