Evidence map›Paper›PMID 36091644›Full record

ArticleChinese geographical science2022

Lockdown-induced Urban Aerosol Change over Changchun, China During COVID-19 Outbreak with Polarization LiDAR.

Weiwei Chen, Lingjian Duanmu, Yang Qin, Hongwu Yang, Jing Fu, Chengwei Lu, Wei Feng, Li Guo

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Chinese geographical science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Weiwei ChenKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102 China.
Lingjian DuanmuKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102 China.
Yang QinJilin Provincial Ecological Environment Monitoring Center, Changchun, 130012 China.
Hongwu YangHongke Photonics Company, Liaoyuan, 136200 China.
Jing FuKey Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, 130102 China.
Chengwei LuThe Department of Ophthalmology, The First Hospital of Jilin University, Changchun, 130021 China.
Wei FengKey Lab of Groundwater Resources and Environment, Jilin University, Changchun, 130021 China.
Li GuoCollege of Biological and Agricultural Engineering, Jilin University, Changchun, 130022 China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Depending on various government policies, COVID-19 (Corona Virus Disease-19) lockdowns have had diverse impacts on global aerosol concentrations. In 2022, Changchun, a provincial capital city in Northeast China, suffered a severe COVID-19 outbreak and implemented a very strict lockdown that lasted for nearly two months. Using ground-based polarization Light Detection and Ranging (LiDAR), we detected real-time aerosol profile parameters (EC, extinction coefficient; DR, depolarization ratio; AOD, aerosol optical depth), as well as air-quality and meteorological indexes from 1 March to 30 April in 2021 and 2022 to quantify the effects of lockdown on aerosol concentrations. The period in 2022 was divided into three stages: pre-lockdown (1-10 March), strict lockdown (11 March to 10 April), and partial lockdown (11-30 April). The results showed that, during the strict lockdown period, compared with the pre-lockdown period, there were substantial reductions in aerosol parameters (EC and AOD), and this was consistent with the concentrations of the atmospheric pollutants PM

Indexed as

aerosol optical depth (AOD)COVID-19 (Corona Virus Disease-19) lockdowndepolarization ratioextinction coefficientNO2O3PM2.5 (particulate matter with an aerodynamic diameter ≤ 2.5 µm)

Identifiers

PMID36091644
PMCPMC9446648

What OpenQuestion holds

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Registered trials

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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.