Evidence map›Paper›PMID 33380771›Full record

ArticleGlobal biogeochemical cycles2020

Changes to Carbon Isotopes in Atmospheric CO

Heather Graven, Ralph F Keeling, Joeri Rogelj

Open access · hybridAbstract read
In one paragraph

Article in Global biogeochemical cycles, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
6.4field-weighted citation impact, top 3% of its field
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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 177 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. How Well Do We Know VPDB-Part 2: Interlaboratory Assessment of Existing δRapid communications in mass spectrometry : RCM · 2026
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  4. Minimal impact of recent decline in CCommunications earth & environment · 2026
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  7. Revealing the Stable δMolecular pharmaceutics · 2025
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  9. Article
  10. Environmentally adjustedCommunications earth & environment · 2025
    Article
  11. Article
  12. Highly enriched carbon and oxygen isotopes in carbonate-derived COProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  13. Article
  14. Review
  15. Making the case for an International Decade of Radiocarbon.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2023
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

3 authors at 3 institutions in 3 countries.

Heather GravenDepartment of Physics Imperial College London London UK.ORCID https://orcid.org/0000-0003-3934-2502
Ralph F KeelingScripps Institution of Oceanography University of California, San Diego La Jolla CA USA.ORCID https://orcid.org/0000-0002-9749-2253
Joeri RogeljGrantham Institute for Climate Change and the Environment Imperial College London London UK.ORCID https://orcid.org/0000-0003-2056-9061
Imperial College London · GBInternational Institute for Applied Systems Analysis · ATScripps Institution of Oceanography · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this "Grand Challenges" paper, we review how the carbon isotopic composition of atmospheric CO

Indexed as

carbon‐13carbon cyclecarbon dioxidefossil fuelsnuclear bombsradiocarbon

Identifiers

PMID33380771
PMCPMC7757245
OpenAlexW3093733790

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.