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Freshening by glacial meltwater enhances melting of ice shelves and reduces formation of Antarctic Bottom Water

Overview of attention for article published in Science Advances, April 2018
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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 (99th percentile)
  • High Attention Score compared to outputs of the same age and source (91st percentile)

Mentioned by

news
26 news outlets
blogs
6 blogs
twitter
358 tweeters
facebook
2 Facebook pages
googleplus
2 Google+ users

Citations

dimensions_citation
21 Dimensions

Readers on

mendeley
154 Mendeley
Title
Freshening by glacial meltwater enhances melting of ice shelves and reduces formation of Antarctic Bottom Water
Published in
Science Advances, April 2018
DOI 10.1126/sciadv.aap9467
Pubmed ID
Authors

Alessandro Silvano, Stephen Rich Rintoul, Beatriz Peña-Molino, William Richard Hobbs, Esmee van Wijk, Shigeru Aoki, Takeshi Tamura, Guy Darvall Williams

Abstract

Strong heat loss and brine release during sea ice formation in coastal polynyas act to cool and salinify waters on the Antarctic continental shelf. Polynya activity thus both limits the ocean heat flux to the Antarctic Ice Sheet and promotes formation of Dense Shelf Water (DSW), the precursor to Antarctic Bottom Water. However, despite the presence of strong polynyas, DSW is not formed on the Sabrina Coast in East Antarctica and in the Amundsen Sea in West Antarctica. Using a simple ocean model driven by observed forcing, we show that freshwater input from basal melt of ice shelves partially offsets the salt flux by sea ice formation in polynyas found in both regions, preventing full-depth convection and formation of DSW. In the absence of deep convection, warm water that reaches the continental shelf in the bottom layer does not lose much heat to the atmosphere and is thus available to drive the rapid basal melt observed at the Totten Ice Shelf on the Sabrina Coast and at the Dotson and Getz ice shelves in the Amundsen Sea. Our results suggest that increased glacial meltwater input in a warming climate will both reduce Antarctic Bottom Water formation and trigger increased mass loss from the Antarctic Ice Sheet, with consequences for the global overturning circulation and sea level rise.

Twitter Demographics

The data shown below were collected from the profiles of 358 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 154 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 154 100%

Demographic breakdown

Readers by professional status Count As %
Researcher 36 23%
Student > Master 29 19%
Student > Ph. D. Student 27 18%
Student > Bachelor 10 6%
Student > Doctoral Student 8 5%
Other 23 15%
Unknown 21 14%
Readers by discipline Count As %
Earth and Planetary Sciences 92 60%
Environmental Science 20 13%
Physics and Astronomy 7 5%
Agricultural and Biological Sciences 4 3%
Biochemistry, Genetics and Molecular Biology 1 <1%
Other 4 3%
Unknown 26 17%

Attention Score in Context

This research output has an Altmetric Attention Score of 443. 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 06 February 2020.
All research outputs
#24,293
of 14,574,990 outputs
Outputs from Science Advances
#252
of 4,063 outputs
Outputs of similar age
#1,129
of 276,208 outputs
Outputs of similar age from Science Advances
#20
of 241 outputs
Altmetric has tracked 14,574,990 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 4,063 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 120.6. This one has done particularly well, scoring higher than 93% 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 276,208 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 99% of its contemporaries.
We're also able to compare this research output to 241 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 91% of its contemporaries.