Identifying urban haze islands and extracting their spatial features

Zhu, Lei; Huang, Qingxu; Ren, Qiang; Yue, Huanbi; Jiao, Chentai; He, Chunyang

doi:10.1016/j.ecolind.2020.106385

Cited by 16 publications

(3 citation statements)

References 54 publications

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“…The impacts of urban expansion are not restricted by city boundaries. Previous studies have found that urban activities and urban expansion could incur heat islands (Manoli et al., 2019), acid islands (Du et al., 2015), and fog islands (Zhu et al., 2020), which are not constrained by city boundaries and can reach up to 10–60 km away from the periphery of existing built‐up land. In addition, urban expansion can alter watershed‐scale hydrological and biogeochemical cycles, and bring water, air, and soil pollutants along surface water, groundwater, and road networks across and beyond the watershed (Best, 2019; McDonald et al., 2020).…”

Section: Discussionmentioning

confidence: 99%

Patterns and Distributions of Urban Expansion in Global Watersheds

et al. 2021

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 We quantify five features of urban expansion among 220 watersheds globally for the last 25 years  Most of watersheds globally experienced a decelerating and sprawling urban expansion  Rapid and low-density of urban expansion in endorheic watersheds may threaten their sustainability Accepted ArticleThis article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this version and the Version of Record. Please cite this article as

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Section: Discussionmentioning

confidence: 99%

Patterns and Distributions of Urban Expansion in Global Watersheds

et al. 2021

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“…The negative influence of UHI is extensively described in the literature. For example, UHI causes rises in energy demand ( Alghamdi and Moore, 2015 ), which implicitly leads to global climate change ( Alghamdi and Moore, 2015 ), environmental degradation ( Lin et al, 2017 ), air pollution ( L. Zhu et al, 2020 ), impact to human comfort and health ( Schwarz et al, 2011 ), and a degradation of ecosystem function ( Keeratikasikorn and Bonafoni, 2018 ). All of these also play a significant role in the rise in the rate of COVID-19 cases ( H. Li et al, 2020 ; Mukherjee and Debnath, 2020 ) and leads to heat-related deaths ( Cui and De Foy, 2012 ; Lowe, 2016 ).…”

Section: Introductionmentioning

confidence: 99%

Impact of COVID-19 lockdown upon the air quality and surface urban heat island intensity over the United Arab Emirates

Alqasemi

Hereher

Kaplan

et al. 2021

Science of The Total Environment

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“…The authors found that the D/S factor in urban areas is obviously greater than that in suburban areas. Among urban climate studies, there have been few studies on UTI and haze effects (Zhu et al 2020). However, previous studies of the five-island effect provide important methodological reference and background information for the present study.…”

Section: Introductionmentioning

confidence: 97%

Analysis of the urban turbidity island effect: a case study in Beijing City, China

Luan

Yang

Feng

et al. 2023

Environ. Res. Lett.

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The urban turbidity island (UTI) effect is an important research topic in urban climate studies. It is closely related to urban visibility and the health of urban residents; however, it has received little attention in previous research. This study analyzes the temporal and spatial distribution characteristics of the UTI effect through the combined use of satellite remote sensing and ground observation data. Specifically, absolute and relative urban turbidity island intensity (UTII_A and UTII_R) indices are proposed and calculated for 2000 to 2020 by using aerosol data products and atmospheric fine particle mass concentration inversion products, which are represented by aerosol optical depth (AOD), PM1, PM2.5, and PM10. The results show the following: 1) there has been a clear footprint of the UTI effect in Beijing since 2000, generally consistent with trends of urban sprawl; 2) there are great differences in the interannual distribution of AOD, normalized AOD and PM values in urban and suburban areas; and 3) there are seasonal differences in the UTI distribution and air pollutant concentrations. The differences among indices between urban and suburban areas are mainly caused by heat island-induced air convection, complex structures in urban areas and regional weather conditions. Importantly, the interannual distribution of AOD and UTII_A of PM values decreased from 2014 to 2020, indicating that the government's air pollution control policy has significantly improved air quality. Analysis from this study could support the formulation of urban planning and control policies to guide human activities.

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Identifying urban haze islands and extracting their spatial features

Cited by 16 publications

References 54 publications

Patterns and Distributions of Urban Expansion in Global Watersheds

Patterns and Distributions of Urban Expansion in Global Watersheds

Impact of COVID-19 lockdown upon the air quality and surface urban heat island intensity over the United Arab Emirates

Analysis of the urban turbidity island effect: a case study in Beijing City, China

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