Evidence map›Paper›PMID 39772514›Full record

ArticleEnvironmental science & technology2025

Contrasting Summertime Trends in Vehicle Combustion Efficiency in Los Angeles, CA and Salt Lake City, UT.

Cindy C Yañez, Ryan Bares, Claudia I Czimczik, John Lin, Jiachen Zhang, Susan Bush, Francesca M Hopkins

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Environmental science & technology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Cindy C YañezDepartment of Earth System Science, University of California, Irvine, Irvine, California 92697, United States.ORCID 0000-0003-1521-2906
Ryan BaresDepartment of Atmospheric Sciences, University of Utah, Salt Lake City, Utah 84112, United States.
Claudia I CzimczikDepartment of Earth System Science, University of California, Irvine, Irvine, California 92697, United States.
John LinDepartment of Atmospheric Sciences, University of Utah, Salt Lake City, Utah 84112, United States.ORCID 0000-0003-2794-184X
Jiachen ZhangDepartment of Civil and Environmental Engineering, University of Southern California, Los Angeles, California 90089, United States.
Susan BushDepartment of Biological Sciences, University of Utah, Salt Lake City, Utah 84112, United States.
Francesca M HopkinsDepartment of Environmental Sciences, University of California, Riverside, Riverside, California 92521, United States.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Policy interventions and technological advances are mitigating emissions of air pollutants from motor vehicles. As a result, vehicle fleets are expected to progressively combust fuel more efficiently, with a declining ratio of carbon monoxide to carbon dioxide (CO/CO

Indexed as

Vehicle EmissionsAir PollutantsCarbon DioxideCarbon MonoxideCitiesCOVID-19Environmental MonitoringLos AngelesSeasonsUtahAir PollutantsCarbon DioxideCarbon MonoxideVehicle Emissionsair qualitycitiesemissionsLos AngelesSalt Lake Citytransportation

Identifiers

PMID39772514
PMCPMC11755713

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.