The case of Tehran's urban heat island, Iran: Impacts of urban ‘lockdown’ associated with the COVID-19 pandemic

Roshan, Gholamreza; Sarli, Reza; Grab, Stefan

doi:10.1016/j.scs.2021.103263

Cited by 31 publications

(16 citation statements)

References 77 publications

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“…Despite the decrease in the radiative forcing of aerosols during the global COVID-19 lockdown, the LST and air temperature did not show the expected rise and even decreased in Europe and North America ( Parida et al, 2021a ). Similar situations have also occurred in Iran ( Roshan et al, 2021 ) and India ( Parida et al, 2021b ). This negative surface temperature anomaly can be partly explained by the evapotranspiration and cooling effects of the late harvest of crops ( Chakraborty et al, 2021 ), but the reason for the reduction in the LST in urban areas with fewer crops remains unknown.…”

Section: Introductionsupporting

confidence: 68%

Changes in air pollution, land surface temperature, and urban heat islands during the COVID-19 lockdown in three Chinese urban agglomerations

Wang

Yuan

Zhang

et al. 2023

Science of The Total Environment

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Section: Introductionsupporting

confidence: 68%

Changes in air pollution, land surface temperature, and urban heat islands during the COVID-19 lockdown in three Chinese urban agglomerations

Wang

Yuan

Zhang

et al. 2023

Science of The Total Environment

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“…These changes in human activities are expected to modify the AHR and thus influence the UHIs (Chakraborty et al, 2021). Most previous studies have demonstrated a significant decline in UHIs over a few cities, such as Tehran (Roshan et al, 2021), New Delhi (Mukherjee & Debnath, 2020), and major cities in the Middle East (Kenawy et al, 2021). However, a recent study suggested an enhancement of surface UHI during lockdown as the latent heat flux increased substantially because of the delay of crop harvesting (Chakraborty et al, 2021).…”

mentioning

confidence: 99%

Urban Heat Islands Significantly Reduced by COVID‐19 Lockdown

Liu

Lai

Zhan

et al. 2022

Geophysical Research Letters

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The significant reduction in human activities during COVID‐19 lockdown is anticipated to substantially influence urban climates, especially urban heat islands (UHIs). However, the UHI variations during lockdown periods remain to be quantified. Based on the MODIS daily land surface temperature and the in‐situ surface air temperature observations, we reveal a substantial decline in both surface and canopy UHIs over 300‐plus megacities in China during lockdown periods compared with reference periods. The surface UHI intensity (UHII) is reduced by 0.25 (one S.D. = 0.22) K in the daytime and by 0.23 (0.20) K at night during lockdown periods. The reductions in canopy UHII reach 0.42 (one S.D. = 0.26) K in the daytime and 0.39 (0.29) K at night. These reductions are mainly due to the near‐unprecedented drop in human activities induced by strict lockdown measures. Our results provide an improved understanding of the urban climate variations during the global pandemic.

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“…During the strict COVID-19 lockdown, the surface urban heat island in Chinese urban area and Pakistan significantly dropped [4,5]. The UHI that caused land surface heat stress in Iran cities also reduced significantly during the lockdown period [6,7]. The implementation of social restrictions also reported affects changes in UHI and decreases LST in some Java Island big cities [8].…”

Section: Introductionmentioning

confidence: 99%

Spatial Pattern of Urban Heat Island to Enhance Urban Cooling Ecosystem Services in the Post-Pandemic Era

Rini

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Urbanization, followed by reduced green space, often leads to increased land surface temperatures (LST), which is also known as the urban heat island (UHI) effect. Urban cooling ecosystem services provided by forests and parks play a crucial role in reducing the UHI effect (which is reflected in LST) and improving the liveability and sustainability of cities. The pandemic has changed many people’s views about the importance of ecosystem services to their well-being. The post-pandemic era is a turning point for infrastructure and environmental improvements to increase ecosystem services’ benefits. This study aims to look at the potential for increasing ecosystem services’ benefits through the provision of urban forests and parks based on UHI conditions in Surakarta city. In this study, UHI was identified from LST based on Landsat 8 and Landsat 9 remote sensing images. The spatial pattern of the UHI was analyzed based on block units using road boundaries using cluster and outlier statistical spatial analysis. In formulating alternatives to provide urban forests and parks, we also interviewed stakeholders from a village revitalization program in Kampung Mojo, Surakarta city. The results show that after the pandemic, in a revitalized neighborhood, the surface temperature was still high. The revitalization program did not include the provision of parks because the basic issue of this program is land ownership legality. Nevertheless, the UHI spatial pattern provides evidence that the provision of urban forests and parks is needed on the central and southern sides of Surakarta city to enhance urban cooling ecosystem services.

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The case of Tehran's urban heat island, Iran: Impacts of urban ‘lockdown’ associated with the COVID-19 pandemic

Cited by 31 publications

References 77 publications

Changes in air pollution, land surface temperature, and urban heat islands during the COVID-19 lockdown in three Chinese urban agglomerations

Changes in air pollution, land surface temperature, and urban heat islands during the COVID-19 lockdown in three Chinese urban agglomerations

Urban Heat Islands Significantly Reduced by COVID‐19 Lockdown

Spatial Pattern of Urban Heat Island to Enhance Urban Cooling Ecosystem Services in the Post-Pandemic Era

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