@ The University of Oklahoma

Month: September 2022

New paper on urban thermal stress modeling published in Renewable and Sustainable Energy Reviews

Our new paper, “Realistic representation of city street-level human thermal stress via a new urban climate-human coupling system“, is published in Renewable and Sustainable Energy Reviews (IF: 16.799). This paper is from the collaboration with the Healthy Cities Laboratory at The University of Hong Kong.

The Share Link to download a copy of our paper is https://authors.elsevier.com/a/1flIY4s9Hw6370 (valid until Nov 03, 2022).

Authors: Xinjie Huang, Jiyun Song, Chenghao Wang, and Pak Wai Chan

Abstract: Urban overheating aggravated by climate change and rapid urbanization poses a severe threat to thermal health of urban residents. To more realistically represent street-level heat stress, we propose a new urban climate-human coupling system by integrating an advanced urban canopy model (UCM) with a new human-environment adaptive thermal stress (HEATS) module. The coupled UCM-HEATS system features a state-of-the-art solution to complicated human-street radiative exchanges and incorporates dynamic human thermoregulatory responses to microclimatic changes. The UCM-HEATS system was evaluated in a typical hot and humid city, Hong Kong, and then applied to investigate street-level thermal stress in various urban settings and under different personal conditions. By explicitly resolving shading effects of buildings and trees on human radiation budgets, our study emphasizes the marked effectiveness of active shade management using green and gray infrastructure on daytime heat mitigation, proposing a “right shade, right place, right time” paradigm for regulating important street canyon geometries (building height, road width, and tree crown width) and orientations. Additionally, human evaporative heat dissipation can be hindered by urban moisture islands and wind impediments; thus, a detailed urban ventilation strategy is suggested considering different temperature-humidity combinations. For personal heat protection, we identified an evident cooling effect of high-albedo clothing and a thermal-comfort-optimal walking speed. Special attention is paid to heat-vulnerable groups, especially older people who suffer from notably higher heat risks during pandemics with facemask-induced heat burden. Bridging urban climate and human ergonomics, this study aims to advance human-centric urban design toward future smart, resilient, and inclusive cities.

DOI: https://doi.org/10.1016/j.rser.2022.112919

Fig. 2. Schematic of the Urban Canopy Model-Human-Environment Adaptive Thermal Stress (UCM-HEATS) model.

We are seeking Ph.D. students to join our lab!

The Sustainable URban Futures (SURF) Lab in the School of Meteorology and the Department of Geography and Environmental Sustainability at the University of Oklahoma in Norman, Oklahoma, USA is seeking self-motivated doctoral students who are willing to pursue research in the areas of urban climate and urban meteorology. The successful candidate will enroll in the Ph.D. program in either Meteorology or Geography and Environmental Sustainability.

For prospective Ph.D. students, a master’s degree in meteorology, atmospheric science, geography, engineering, Earth science, or environmental science is preferred but not required. Candidates with experience in using programming languages, geographic information system, and/or remote sensing products are especially encouraged to apply. Successful candidates will work with Dr. Chenghao Wang and his collaborators at the University of Oklahoma and other research institutes. With the strong modeling and/or data analysis skills developed during the training, successful candidates will have the opportunity to study a wide range of urban issues and challenges as well as potential mitigation and adaptation measures on the path toward sustainable and resilient urban environments, and eventually to push the boundaries of our knowledge about past, present, and future cities.

If you are interested, please contact Dr. Chenghao Wang (chenghao.wang@ou.edu) by Oct 15, 2022 and attach (1) a copy of your CV, (2) a brief statement that highlights your interest (and skills and previous research experience, if applicable) relevant to the Sustainable URban Futures (SURF) Lab, and (3) a copy of unofficial academic transcripts. Review of applications will begin immediately and continue until the position is filled.

Founded in 1890, the University of Oklahoma is a public research university located in Norman, Oklahoma just 20 mins. south of Oklahoma City, one of the top 50 metropolitan areas in the United States. The university is classified among “R1: Doctoral Universities – Very high research activity”. More information regarding the University of Oklahoma, the School of Meteorology, the Department of Geography and Environmental Sustainability, and available degree programs can be found https://sites.create.ou.edu/chenghaowang/about/.

For further information, please contact Dr. Chenghao Wang.

A PDF version of this post in English can be downloaded here


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