Effects of urban form on air quality: A case study from China comparing years with normal and reduced human activity due to the COVID-19 pandemic

Wang, Di; Zhou, Tao; Sun, Jianing

doi:10.1016/j.cities.2022.104040

Cited by 10 publications

(2 citation statements)

References 69 publications

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“…Wang et al found that there is a dynamic and complex relationship between air quality and urban form. Continuous and compact urban form, reasonable building layout, reasonable population density, reasonable road density and high green space rate are all beneficial methods for improving urban air quality [11]. Xie et al obtained concentration observations from 18 air quality monitoring stations in Shenzhen and concluded that the accumulation patterns of PM2.5 and NO 2 are different.…”

Section: Research On Breathing Comfortmentioning

confidence: 99%

The comprehensive impact of thermal-PM2.5 interaction on subjective evaluation of urban outdoor space: A pilot study in a cold region of China

Lin,

Gao,

Zhen

2024

PLoS ONE

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Urban outdoor space has a very important impact on the quality of people’s outdoor activities, which has influenced people’s health and moods. Its influence is the result of the combined action of various factors. Thermal and air quality environment are important factors affecting the overall comfort of the urban outdoor space. At present, there are few research on interaction with thermal and air quality environment. Therefore, a meteorological measurement and questionnaire survey have been conducted in a representative open space in a campus in Xi’an, China. The following are the research results:(1) Mean physiological equivalent temperature (MPET) is a significant factor affecting thermal sensation vote (TSV) and thermal comfort vote (TCV). PM2.5 has no significant effect on thermal comfort vote (TCV), but it is a considerable factor affecting thermal sensation vote (TSV) when 10.2°C ≤ MPET<21°C (P = 0.023 *). (2) PM2.5 is a significant factor affecting air quality vote (AQV) and breathing comfort vote (BCV).Mean physiological equivalent temperature (MPET) has no significant impact on air quality vote (AQV), but it is a considerable factor affecting breathing comfort vote (BCV) when 10.2°C ≤ MPET<21°C (P = 0.01 **). (3) Mean physiological equivalent temperature (MPET) is a significant factor affecting overall comfort vote (OCV), but PM2.5 is not. In general, When 10.2°C ≤ MPET<21°C (-0.5 < -0.37 ≤ TCV ≤ 0.12 <0.5), the interaction between thermal and PM2.5 environment is significant on thermal sensation vote (TSV) and breathing comfort vote (BCV). This study can provide experimental support for the field of multi-factor interaction, which has shown that improving the thermal environment can better breathing comfort, while reducing PM2.5 concentration can promote thermal comfort. And can also provide reference for the study of human subjective comfort in urban outdoor space in the same latitude of the world.

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Section: Research On Breathing Comfortmentioning

confidence: 99%

The comprehensive impact of thermal-PM2.5 interaction on subjective evaluation of urban outdoor space: A pilot study in a cold region of China

Lin,

Gao,

Zhen

2024

PLoS ONE

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“…This O 3 time series covers the COVID-19 health crisis, which has been extensively analysed in terms of air quality all around the world [ 17 , 18 ]. In Spain [ 19 ], an analysis was performed on how O 3 concentrations changed during this period at different monitoring stations, although Córdoba city was not considered in the study.…”

Section: Introductionmentioning

confidence: 99%

16 Years (2006–2021) of Surface Ozone Measurements in Córdoba (Southern Spain): Trends and the Impact of the COVID-19 Lockdown

Hernández-Ceballos

Jiménez‐Solano

Torres-Fernández

2022

IJERPH

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Surface ozone concentrations (O3) during the period 2006–2021 are analysed at Córdoba city (southern Iberian Peninsula) in suburban and urban sampling sites. The aims are to present the levels and temporal variations, to explore trends and to quantity the variation in O3 concentrations in the context of the COVID-19 lockdown. The O3 means are higher in the suburban station (62 µg m−3 and 51.3 µg m−3), being the information level threshold only exceeded twice during this period. The daily evolution shows a maximum at about 17:00 UTC, whereas the minimum is reached at about 9:00 UTC, with higher levels in the suburban station. The seasonal evolution of this daily cycle also presents monthly differences in shape and intensity between stations. The trends are analysed by means of daily averages and daily 5th and 95th percentiles, and they show a similar increase in all of these parameters, with special emphasis on the daily P95 concentrations, with 0.27 µg m−3 year−1 and 0.24 µg m−3 year−1. Finally, the impact of the COVID-19 lockdown shows a decline in O3 concentrations over 10%.

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Reconsidering the effects of urban form on PM2.5 concentrations: an urban shrinkage perspective

Sun

Zhou

2022

Environ Sci Pollut Res

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Effects of urban form on air quality: A case study from China comparing years with normal and reduced human activity due to the COVID-19 pandemic

Cited by 10 publications

References 69 publications

The comprehensive impact of thermal-PM2.5 interaction on subjective evaluation of urban outdoor space: A pilot study in a cold region of China

The comprehensive impact of thermal-PM2.5 interaction on subjective evaluation of urban outdoor space: A pilot study in a cold region of China

16 Years (2006–2021) of Surface Ozone Measurements in Córdoba (Southern Spain): Trends and the Impact of the COVID-19 Lockdown

Reconsidering the effects of urban form on PM2.5 concentrations: an urban shrinkage perspective

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