Global Urban Activity Changes from COVID-19 Physical Distancing Restrictions Dataset: TRacking Anomalous COVID-19 induced changEs in NightTime Lights (TRACE-NTL)

We use satellite-derived (NASA Black Marble) nighttime lights to identify, quantify, and map daily changes in human activity that are atypical for each urban area, globally, from the beginning of the pandemic until two years after its onset. The dataset TRACE-NTL consists of global daily urban disruption and recovery metrics as a response to COVID-19. TRACE-NTL: ├───ancillary├───data└───metrics ├───disruption │ ├───change_segment │ ├───city_uncertainty │ ├───daily_change │ └───daily_qa_flags └───recovery https://github.com/srijac/covid-19_Nightlights Accompanying paper: Accompanying paper: Chakraborty, S., Stokes, E.C. & Alexander, O. Global urban activity changes from COVID-19 physical distancing restrictions. Sci Data 12, 98 (2025). https://doi.org/10.1038/s41597-025-04398-x本研究采用NASA黑大理石（NASA Black Marble）卫星反演的夜间灯光数据，针对全球各城市区域，识别、量化并绘制新冠疫情暴发至暴发后两年内的每日异常人类活动变化。数据集TRACE-NTL包含用于表征新冠疫情响应的全球每日城市扰动与恢复指标。 TRACE-NTL数据集目录结构如下： ├───辅助数据（ancillary） │ ├───数据（data） │ └───指标（metrics） │ ├───扰动（disruption） │ │ ├───变化分段（change_segment） │ │ ├───城市不确定性（city_uncertainty） │ │ ├───每日变化量（daily_change） │ │ └───每日质量控制标记（daily_qa_flags） │ └───恢复（recovery） 数据集开源仓库：https://github.com/srijac/covid-19_Nightlights 配套学术论文：Chakraborty S, Stokes E C, Alexander O. Global urban activity changes from COVID-19 physical distancing restrictions[J]. Scientific Data, 2025, 12: 98. DOI: 10.1038/s41597-025-04398-x