ArticleInternational journal of applied earth observation and geoinformation : ITC journal2021
Lockdown induced night-time light dynamics during the COVID-19 epidemic in global megacities.
Article in International journal of applied earth observation and geoinformation : ITC journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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20 citing papers in PubMed.
- Article
- Spatial heterogeneity of built environment's impact on urban vitality using multi-source big data and MGWR.Scientific reports · 2025Article
- Rising infrastructure inequalities accompany urbanization and economic development.Nature communications · 2025Article
- Indirect and direct effects of nighttime light on COVID-19 mortality using satellite image mapping approach.Scientific reports · 2024Article
- Spatiotemporal Dynamics of COVID-19 Pandemic City Lockdown: Insights From Nighttime Light Remote Sensing.GeoHealth · 2024Article
- Urban birds become less fearful following COVID-19 reopenings.Proceedings. Biological sciences · 2023Article
- Spatiotemporal Patterns of the Omicron Wave of COVID-19 in the United States.Tropical medicine and infectious disease · 2023Article
- Post COVID-19 pandemic recovery of intracity human mobility in Wuhan: Spatiotemporal characteristic and driving mechanism.Travel behaviour & society · 2023Article
- A quasi-experimental analysis on the causal effects of COVID-19 on urban park visits: The role of park features and the surrounding built environment.Urban forestry & urban greening · 2023Article
- Sensing global changes in local patterns of energy consumption in cities during the early stages of the COVID-19 pandemic.Cities (London, England) · 2022Article
- Environmental risks from artificial nighttime lighting widespread and increasing across Europe.Science advances · 2022Article
- Using satellite images of nighttime lights to predict the economic impact of COVID-19 in India.Advances in space research : the official journal of the Committee on Space Research (COSPAR) · 2022Article
- COVID-19 lockdown introduces human mobility pattern changes for both Guangdong-Hong Kong-Macao greater bay area and the San Francisco bay area.International journal of applied earth observation and geoinformation : ITC journal · 2022Article
- Associations between nighttime light and COVID-19 incidence and mortality in the United States.International journal of applied earth observation and geoinformation : ITC journal · 2022Article
- The spatiotemporal evolution of COVID-19 in China and its impact on urban economic resilience.China economic review · 2022Article
- Monitoring Spatiotemporal Distribution of the GDP of Major Cities in China during the COVID-19 Pandemic.International journal of environmental research and public health · 2022Article
- Illuminated border: Spatiotemporal analysis of COVID-19 pressure in the Sino-Burma border from the perspective of nighttime light.International journal of applied earth observation and geoinformation : ITC journal · 2022Article
- Spatial disparities of self-reported COVID-19 cases and influencing factors in Wuhan, China.Sustainable cities and society · 2022Article
- Article
- An Impact Analysis of Artificial Light at Night (ALAN) on Bats. A Case Study of the Historic Monument and Natura 2000 Wisłoujście Fortress in Gdansk, Poland.International journal of environmental research and public health · 2021Article
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Authors and funding
5 authors.
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No grant is acknowledged in the PubMed record.
Abstract
The lockdown of cities against the COVID-19 epidemic directly decreases urban socioeconomic activities. Remotely sensed night-time light (NTL) provides a macro perspective to capture these variations. Here, taking 20 global megacities as examples, we adopted the NASA's Black Marble NTL data with a daily resolution to investigate their spatio-temporal changes. We collected daily NTL products for four weeks (one month) before and after the date of lockdown in each city, which were then summarized as weekly and monthly averaged NTL images after pre-processing (cloud removing, outlier detection, etc.). Results show that NTL overall decreased after the lockdown of cities, but with regional disparities and varying spatial patterns. Asian cities experienced the most obvious reduction of NTL. Particularly, the monthly averaged NTL in Mumbai, India, decreased by nearly 20% compared to one month before. However, there was no significant decline in NTL in European cities. African cities also experienced stable changes of NTL. Spatially, city centers darkened more obviously than the urban periphery. Facing emergencies, NTL data has broad applications in monitoring socioeconomic dynamics and assessing public policies in a near real-time manner.
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