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Subtropical Arctic Ocean temperatures during the Palaeocene/Eocene thermal maximum

Overview of attention for article published in Nature, June 2006
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (98th percentile)
  • Above-average Attention Score compared to outputs of the same age and source (61st percentile)

Mentioned by

7 news outlets
5 blogs
2 policy sources
2 tweeters
11 Wikipedia pages
1 video uploader


514 Dimensions

Readers on

615 Mendeley
3 CiteULike
2 Connotea
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Subtropical Arctic Ocean temperatures during the Palaeocene/Eocene thermal maximum
Published in
Nature, June 2006
DOI 10.1038/nature04668
Pubmed ID

Appy Sluijs, Stefan Schouten, Mark Pagani, Martijn Woltering, Henk Brinkhuis, Jaap S. Sinninghe Damsté, Gerald R. Dickens, Matthew Huber, Gert-Jan Reichart, Ruediger Stein, Jens Matthiessen, Lucas J. Lourens, Nikolai Pedentchouk, Jan Backman, Kathryn Moran


The Palaeocene/Eocene thermal maximum, approximately 55 million years ago, was a brief period of widespread, extreme climatic warming, that was associated with massive atmospheric greenhouse gas input. Although aspects of the resulting environmental changes are well documented at low latitudes, no data were available to quantify simultaneous changes in the Arctic region. Here we identify the Palaeocene/Eocene thermal maximum in a marine sedimentary sequence obtained during the Arctic Coring Expedition. We show that sea surface temperatures near the North Pole increased from 18 degrees C to over 23 degrees C during this event. Such warm values imply the absence of ice and thus exclude the influence of ice-albedo feedbacks on this Arctic warming. At the same time, sea level rose while anoxic and euxinic conditions developed in the ocean's bottom waters and photic zone, respectively. Increasing temperature and sea level match expectations based on palaeoclimate model simulations, but the absolute polar temperatures that we derive before, during and after the event are more than 10 degrees C warmer than those model-predicted. This suggests that higher-than-modern greenhouse gas concentrations must have operated in conjunction with other feedback mechanisms--perhaps polar stratospheric clouds or hurricane-induced ocean mixing--to amplify early Palaeogene polar temperatures.

Twitter Demographics

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Mendeley readers

The data shown below were compiled from readership statistics for 615 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 9 1%
Canada 3 <1%
Germany 2 <1%
Spain 2 <1%
Switzerland 2 <1%
Australia 2 <1%
Netherlands 2 <1%
Costa Rica 1 <1%
Ireland 1 <1%
Other 7 1%
Unknown 584 95%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 135 22%
Researcher 127 21%
Student > Master 78 13%
Student > Bachelor 76 12%
Professor 41 7%
Other 95 15%
Unknown 63 10%
Readers by discipline Count As %
Earth and Planetary Sciences 348 57%
Agricultural and Biological Sciences 76 12%
Environmental Science 52 8%
Biochemistry, Genetics and Molecular Biology 10 2%
Physics and Astronomy 8 1%
Other 33 5%
Unknown 88 14%

Attention Score in Context

This research output has an Altmetric Attention Score of 100. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 21 November 2021.
All research outputs
of 19,806,963 outputs
Outputs from Nature
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Outputs of similar age
of 311,151 outputs
Outputs of similar age from Nature
of 908 outputs
Altmetric has tracked 19,806,963 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 98th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 84,612 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 94.8. This one has done well, scoring higher than 80% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 311,151 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 98% of its contemporaries.
We're also able to compare this research output to 908 others from the same source and published within six weeks on either side of this one. This one has gotten more attention than average, scoring higher than 61% of its contemporaries.