ArticleGeophysical research letters2021
Spring Festival and COVID-19 Lockdown: Disentangling PM Sources in Major Chinese Cities.
Article in Geophysical research letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed.
- Widespread surface ozone reduction triggered by dust storm disturbance on ozone production and destruction chemistry.Science advances · 2025Article
- Challenges in Observation of Ultrafine Particles: Addressing Estimation Miscalculations and the Necessity of Temporal Trends.Environmental science & technology · 2025Article
- Further improvement in London's air quality demands more than the Ultra Low Emission Zone policy.NPJ clean air · 2025Article
- Unraveling the OAtmospheric environment (Oxford, England : 1994) · 2023Article
- A machine learning-based study on the impact of COVID-19 on three kinds of pollution in Beijing-Tianjin-Hebei region.The Science of the total environment · 2023Article
- The worldwide COVID-19 lockdown impacts on global secondary inorganic aerosols and radiative budget.Science advances · 2023Article
- The Relationship between the Transmission of Different SARS-CoV-2 Strains and Air Quality: A Case Study in China.International journal of environmental research and public health · 2023Article
- Variation of pollution sources and health effects on air pollution before and during COVID-19 pandemic in Linfen, Fenwei Plain.Environmental research · 2022Article
- Heat exposure misclassification: Do current methods of classifying diurnal range in individually experienced temperatures and heat indices accurately reflect personal exposure?International journal of biometeorology · 2022Article
- Evaluation of NOx emissions before, during, and after the COVID-19 lockdowns in China: A comparison of meteorological normalization methods.Atmospheric environment (Oxford, England : 1994) · 2022Article
- The impact of lockdown on air pollution: Evidence from an instrument.China economic review · 2022Article
- Impacts of emergency health protection measures upon air quality, traffic and public health: evidence from Oxford, UK.Environmental pollution (Barking, Essex : 1987) · 2022Article
- Changing weekend effects of air pollutants in Beijing under 2020 COVID-19 lockdown controls.npj urban sustainability · 2022Article
- Outdoor PMScientific reports · 2021Article
- Spring Festival and COVID-19 Lockdown: Disentangling PM Sources in Major Chinese Cities.Geophysical research letters · 2021Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
Abstract
Responding to the 2020 COVID-19 outbreak, China imposed an unprecedented lockdown producing reductions in air pollutant emissions. However, the lockdown driven air pollution changes have not been fully quantified. We applied machine learning to quantify the effects of meteorology on surface air quality data in 31 major Chinese cities. The meteorologically normalized NO
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.