Evidence map›Paper›PMID 39897438›Full record

ArticleGeoHealth2025

Impact of Reduced Anthropogenic Emissions Associated With COVID-19 Lockdown on PM

Samaneh Ashraf, Francesco S R Pausata, Sylvie Leroyer, Robin Stevens, Rodrigo Munoz-Alpizar

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in GeoHealth, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Trends in incidence of gastroschisis before and after the start of the COVID-19 pandemic.Journal of perinatology : official journal of the California Perinatal Association · 2026
    Article
  2. 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

5 authors.

Samaneh AshrafDepartment of Chemistry, University of Montreal (UdeM) Montreal QC Canada.ORCID https://orcid.org/0000-0003-4858-6496
Francesco S R PausataCentre ESCER (Étude et la Simulation du Climat à l'Échelle Régionale) and GEOTOP (Research Centre in Earth System Dynamics), Department of Earth and Atmospheric Sciences, University of Quebec in Montreal (UQAM) Montreal QC Canada.ORCID https://orcid.org/0000-0001-5182-8420
Sylvie LeroyerMeteorological Research Division Environment and Climate Change Canada Montreal QC Canada.
Robin StevensDepartment of Chemistry, University of Montreal (UdeM) Montreal QC Canada.
Rodrigo Munoz-AlpizarMeteorological Service of Canada, Environment and Climate Change Canada Montreal QC Canada.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Extensive lockdowns during the COVID-19 pandemic caused a remarkable decline in human activities that have influenced urban climate, especially air quality and urban heat islands. However, the impact of such changes on local climate based on long term ground-level observations has hitherto not been investigated. Using air pollution measurements for the four major Canadian metropolitan areas (Toronto, Montreal, Vancouver, and Calgary), we find that PM

Identifiers

PMID39897438
PMCPMC11786188

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.