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Title: Modeling the Impacts of Urbanization on Summer Thermal Comfort: The Role of Urban Land Use and Anthropogenic Heat

Abstract

Urban land use and anthropogenic heat (AH) emission can considerably influence the human thermal comfort during extreme heat events. In this study, a spatially heterogeneous AH emission data and updated urban land use data are integrated into the Weather Research and Forecasting model to simulate the physical processes of urban warming during summer. Simulations conducted in the Yangtze River Delta (YRD) of east China suggest that the mean urban heat island intensity reaches 1.49 °C in urbanized areas during summer, with AH emission making a considerable contribution. The warming effect due to urban land use is intensified during extremely hot days, but in contrast, the AH effects are slightly reduced. Urban development increases the total thermal discomfort hours by 27% in the urban areas of YRD, with AH and urban land use contributing nearly equal amount. By limiting the daytime latent heat release, urban land use reduces the daily maximum heat stress particularly during extremely hot days; however, such alleviations can be offset by the AH emission. Strategies for mitigation of urban heat island effect and heat stress in cities should therefore include measures to reduce AH emission.

Authors:
ORCiD logo [1];  [2]; ORCiD logo [3];  [4]; ORCiD logo [3];  [5];  [2];  [1];  [4]
  1. Nanjing University
  2. Zhejiang University
  3. BATTELLE (PACIFIC NW LAB)
  4. Michigan State University
  5. University of Science and Technology of China
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1571493
Report Number(s):
PNNL-SA-147485
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Journal of Geophysical Research: Atmospheres
Additional Journal Information:
Journal Volume: 124; Journal Issue: 13
Country of Publication:
United States
Language:
English

Citation Formats

Yang, Ben, Yang, Xuchao, Leung, Lai-Yung, Zhong, Shiyuan, Qian, Yun, Zhao, Chun, Chen, Feng, Zhang, Yaocun, and Qi, Jiaguo. Modeling the Impacts of Urbanization on Summer Thermal Comfort: The Role of Urban Land Use and Anthropogenic Heat. United States: N. p., 2019. Web. doi:10.1029/2018JD029829.
Yang, Ben, Yang, Xuchao, Leung, Lai-Yung, Zhong, Shiyuan, Qian, Yun, Zhao, Chun, Chen, Feng, Zhang, Yaocun, & Qi, Jiaguo. Modeling the Impacts of Urbanization on Summer Thermal Comfort: The Role of Urban Land Use and Anthropogenic Heat. United States. doi:10.1029/2018JD029829.
Yang, Ben, Yang, Xuchao, Leung, Lai-Yung, Zhong, Shiyuan, Qian, Yun, Zhao, Chun, Chen, Feng, Zhang, Yaocun, and Qi, Jiaguo. Tue . "Modeling the Impacts of Urbanization on Summer Thermal Comfort: The Role of Urban Land Use and Anthropogenic Heat". United States. doi:10.1029/2018JD029829.
@article{osti_1571493,
title = {Modeling the Impacts of Urbanization on Summer Thermal Comfort: The Role of Urban Land Use and Anthropogenic Heat},
author = {Yang, Ben and Yang, Xuchao and Leung, Lai-Yung and Zhong, Shiyuan and Qian, Yun and Zhao, Chun and Chen, Feng and Zhang, Yaocun and Qi, Jiaguo},
abstractNote = {Urban land use and anthropogenic heat (AH) emission can considerably influence the human thermal comfort during extreme heat events. In this study, a spatially heterogeneous AH emission data and updated urban land use data are integrated into the Weather Research and Forecasting model to simulate the physical processes of urban warming during summer. Simulations conducted in the Yangtze River Delta (YRD) of east China suggest that the mean urban heat island intensity reaches 1.49 °C in urbanized areas during summer, with AH emission making a considerable contribution. The warming effect due to urban land use is intensified during extremely hot days, but in contrast, the AH effects are slightly reduced. Urban development increases the total thermal discomfort hours by 27% in the urban areas of YRD, with AH and urban land use contributing nearly equal amount. By limiting the daytime latent heat release, urban land use reduces the daily maximum heat stress particularly during extremely hot days; however, such alleviations can be offset by the AH emission. Strategies for mitigation of urban heat island effect and heat stress in cities should therefore include measures to reduce AH emission.},
doi = {10.1029/2018JD029829},
journal = {Journal of Geophysical Research: Atmospheres},
number = 13,
volume = 124,
place = {United States},
year = {2019},
month = {7}
}

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