Multi-Physics and Chemistry of Urban Climate Modelling

Dear Colleagues,

Currently, about 55% of the global population are living in urban areas. This proportion is predicted to be more than 68% by 2050. Rapid urbanization is resulting in a series of environmental issues, such as weakened urban wind speed and city ventilation capacity, intensified urban heat island intensities, deteriorating urban air quality, which inflicts great harm on human health, wind safety, outdoor thermal comfort, and energy consumption. Due to rapid urbanization, urban warming is happening much quicker than global warming. For instance, during hot summers, urban residents spend significantly more on electricity used for cooling down compared to people in rural areas. In addition, urban residents usually suffer from higher pollutant exposure from traffic- and energy-related emissions than those who live in rural areas. Both physical factors (e.g., urban turbulence and ventilation) and chemical processes (e.g., Nox-VOCs-O₃ chemical reactions) influence urban air pollution. An advanced understanding of multi-physic and chemical urban sciences with mechanical and thermal processes is necessary in order to formulate effective techniques and policies to improve urban air quality, city ventilation, and urban thermal environment, which may contribute to a healthy, energy-efficient, and sustainable urban climate quality for future generations.

We invite research articles that advance our understanding of multi-physics and chemistry of urban climate modelling, particularly those that include experimental research (e.g., wind tunnel/water tank experiments, full-scale or scaled outdoor field measurements) and numerical studies (e.g., micro-scale CFD simulations or meso-scale numerical simulations, global numerical models, urban canopy models), as well as theoretical models, database analysis, etc.

Topics of interest for this Special Issue include, but are not limited to, the following:

• Interaction of dynamic force and thermal buoyancy effect on urban airflow and ventilation, urban thermal stress/comfort, and pollutant dispersion/air quality.
• Integrated effects of building morphologies and other urban parameters (e.g., urban vegetations, reflective cooling material, etc.) on urban airflow, pollutant dispersion, and urban heat island/energy consumptions.
• Influence of urban tree planting/water bodies, etc., on urban thermal/humidity environment as well as outdoor thermal comfort, urban evaporation, latent heat fluxes, etc.
• Modelling of urban energy balance and urban canopy parameterization.
• Integrated impacts of turbulent pollutant dispersion and photo-chemical reactions.
• Interaction of building physics (indoor) and urban physics (outdoor).
• Interaction of micro-scale urban physics and meso-scale atmospheric physics.
• Interaction between urban micro-climate and building energy consumption.
• Interactions of chemical reactions and urban turbulent dispersion.
• Influence of multi-scale urban climate on human health.

Dr. Jian Hang
Prof. Dr. Riccardo Buccolieri
Dr. Liyue Zeng
Dr. Lin Liu
Dr. Dongjin Cui
Dr. Guanwen Chen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Climate is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

• urbanization
• urban climate
• air quality
• urban heat island
• pollutant dispersion
• multi-physics and chemistry
• energy consumption
• human health