Evidence map›Paper›PMID 41941642›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2026

Configuration of circum-Antarctic circulation at the last green- to icehouse climate transition.

Hanna S Knahl, Johann P Klages, Lars Ackermann, Katharina Hochmuth, Lu Niu, Nicholas R Golledge, Gerrit Lohmann

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2026. 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.

Hanna S KnahlAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven 27570, Germany.ORCID 0009-0009-3315-7825
Johann P KlagesAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven 27570, Germany.ORCID 0000-0003-0968-1183
Lars AckermannAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven 27570, Germany.ORCID 0000-0001-6643-0714
Katharina HochmuthAustralian Centre of Excellence in Antarctic Science, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania 7001, Australia.ORCID 0000-0003-2789-2179
Lu NiuAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven 27570, Germany.ORCID 0000-0002-8314-7416
Nicholas R GolledgeAntarctic Research Centre, Victoria University of Wellington, Wellington 6140, New Zealand.ORCID 0000-0001-7676-8970
Gerrit LohmannAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven 27570, Germany.ORCID 0000-0003-2089-733X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

During the Eocene-Oligocene Transition ([Formula: see text]34.4 to 33.7 Ma), major climatic and tectonic changes initiated Earth's current icehouse climate. Plate motion intensified mountain building, reduced atmospheric CO

Indexed as

early Antarctic Circumpolar Currentocean circulationoceanic gatewayspaleoclimate

Identifiers

PMID41941642
PMCPMC13080016

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.