Evidence map›Paper›PMID 34380230›Full record

ArticleEnvironmental pollution (Barking, Essex : 1987)2021

Changes in air quality in Mexico City, London and Delhi in response to various stages and levels of lockdowns and easing of restrictions during COVID-19 pandemic.

E Vega, A Namdeo, L Bramwell, Y Miquelajauregui, C G Resendiz-Martinez, M Jaimes-Palomera, F Luna-Falfan, A Terrazas-Ahumada, K J Maji, J Entwistle and 5 more

Abstract read
In one paragraph

Article in Environmental pollution (Barking, Essex : 1987), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing 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

9 citing papers in PubMed.

  1. Article
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  5. Article
  6. Decade-low aerosol levels over the Bohai and Yellow Seas amid the COVID-19 lockdown.International journal of applied earth observation and geoinformation : ITC journal · 2022
    Article
  7. Article
  8. Article
  9. 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

15 authors.

E VegaCentro de Ciencias de la Atmósfera, National Autonomous University of Mexico (UNAM), Mexico. Electronic address: evega@atmosfera.unam.mx.
A NamdeoGeography and Environmental Sciences Department, Northumbria University, UK.
L BramwellGeography and Environmental Sciences Department, Northumbria University, UK.
Y MiquelajaureguiLaboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, UNAM, Mexico.
C G Resendiz-MartinezSecretaría de Medio Ambiente, Dirección de Monitoreo de Calidad del Aire, Subdirección de Análisis y Modelación, Mexico.
M Jaimes-PalomeraSecretaría de Medio Ambiente, Dirección de Monitoreo de Calidad del Aire, Subdirección de Análisis y Modelación, Mexico.
F Luna-FalfanSecretaría de Medio Ambiente, Dirección de Monitoreo de Calidad del Aire, Subdirección de Análisis y Modelación, Mexico.
A Terrazas-AhumadaSecretaría de Medio Ambiente, Dirección de Monitoreo de Calidad del Aire, Subdirección de Análisis y Modelación, Mexico.
K J MajiGeography and Environmental Sciences Department, Northumbria University, UK.
J EntwistleGeography and Environmental Sciences Department, Northumbria University, UK.
J C Núñez EnríquezInstituto Mexicano del Seguro Social (IMSS), Mexico.
J M MejiaInstituto Mexicano del Seguro Social (IMSS), Mexico.
A PortasMathematics, Physics and Electrical Engineering, Northumbria University, UK.
L HayesPopulation Health Sciences Institute, Newcastle University, UK.
R McNallyPopulation Health Sciences Institute, Newcastle University, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The impacts of COVID-19 lockdown restrictions have provided a valuable global experiment into the extent of improvements in air quality possible with reductions in vehicle movements. Mexico City, London and Delhi all share the problem of air quality failing WHO guideline limits, each with unique situations and influencing factors. We determine, discuss and compare the air quality changes across these cities during the COVID-19, to understand how the findings may support future improvements in their air quality and associated health of citizens. We analysed ground-level PM

Indexed as

Air PollutantsAir PollutionCOVID-19CitiesCommunicable Disease ControlEnvironmental MonitoringHumansIndiaLondonMexicoPandemicsParticulate MatterSARS-CoV-2Air PollutantsParticulate MatterAir pollutionCovid-19 restrictionsDelhiLockdownLondonMexico CityParticulate matter

Identifiers

PMID34380230
PMCPMC8802357

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.