Mass balance of the Antarctic ice sheet from 1992 to 2017

Shepherd, A.; Ivins, E.; Rignot, E.; Smith, B.; van den Broeke, M.; Velicogna, I.; Whitehouse, P.; Briggs, K.; Joughin, I.; Krinner, G.; Nowicki, S.; Payne, T.; Scambos, T.; Schlegel, N.; Geruo, A.; Agosta, C.; Ahlstrøm, A.; Babonis, G.; Barletta, V.; Blazquez, A.; Bonin, J.; Csatho, B.; Cullather, R.; Felikson, D.; Fettweis, X.; Forsberg, R.; Gallee, H.; Gardner, A.; Gilbert, L.; Groh, A.; Gunter, B.; Hanna, E.; Harig, C.; Helm, V.; Horvath, A.; Horwath, M.; Khan, S.; Kjeldsen, K.; Konrad, H.; Langen, P.; Lecavalier, B.; Loomis, B.; Luthcke, S.; McMillan, M.; Melini, D.; Mernild, S.; Mohajerani, Y.; Moore, P.; Mouginot, J.; Moyano, G.; Muir, A.; Nagler, T.; Nield, G.; Nilsson, J.; Noel, B.; Otosaka, I.; Pattle, M.P.; Peltier, W.R.; Nadege, P.; Rietbroek, R.; Rott, H.; Sandberg-Sørensen, L.; Sasgen, I.; Save, H.; Schrama, E.; Schröder, L.; Seo, K-W.; Simonsen, S.; Slater, T.; Spada, G.; Sutterley, T.; Talpe, M.; Tarasov, L.; van de Berg, W.J.; van der Wal, W.; van Wessem, M.; Vishwakarma, B.D.; Wiese, D.; Wouters, B.

doi:10.1038/s41586-018-0179-y

Mass balance of the Antarctic ice sheet from 1992 to 2017

Shepherd, A.; Ivins, E.; Rignot, E.; Smith, B.; van den Broeke, M.; Velicogna, I.; Whitehouse, P.; Briggs, K.; Joughin, I.; Krinner, G.; Nowicki, S.; Payne, T.; Scambos, T.; Schlegel, N.; Geruo, A.; Agosta, C.; Ahlstrøm, A.; Babonis, G.; Barletta, V.; Blazquez, A.; Bonin, J.; Csatho, B.; Cullather, R.; Felikson, D.; Fettweis, X.; Forsberg, R.; Gallee, H.; Gardner, A.; Gilbert, L.; Groh, A.; Gunter, B.; Hanna, E.; Harig, C.; Helm, V.; Horvath, A.; Horwath, M.; Khan, S.; Kjeldsen, K.; Konrad, H.; Langen, P.; Lecavalier, B.; Loomis, B.; Luthcke, S.; McMillan, M.; Melini, D.; Mernild, S.; Mohajerani, Y.; Moore, P.; Mouginot, J.; Moyano, G.; Muir, A.; Nagler, T.; Nield, G.; Nilsson, J.; Noel, B.; Otosaka, I.; Pattle, M.P.; Peltier, W.R.; Nadege, P.; Rietbroek, R.; Rott, H.; Sandberg-Sørensen, L.; Sasgen, I.; Save, H.; Schrama, E.; Schröder, L.; Seo, K-W.; Simonsen, S.; Slater, T.; Spada, G.; Sutterley, T.; Talpe, M.; Tarasov, L.; van de Berg, W.J.; van der Wal, W.; van Wessem, M.; Vishwakar...

Authors

A. Shepherd

E. Ivins

E. Rignot

B. Smith

M. van den Broeke

I. Velicogna

Professor Pippa Whitehouse pippa.whitehouse@durham.ac.uk
Honorary Professor

K. Briggs

I. Joughin

G. Krinner

S. Nowicki

T. Payne

T. Scambos

N. Schlegel

A. Geruo

C. Agosta

A. Ahlstrøm

G. Babonis

V. Barletta

A. Blazquez

J. Bonin

B. Csatho

R. Cullather

D. Felikson

X. Fettweis

R. Forsberg

H. Gallee

A. Gardner

L. Gilbert

A. Groh

B. Gunter

E. Hanna

C. Harig

V. Helm

A. Horvath

M. Horwath

S. Khan

K. Kjeldsen

H. Konrad

P. Langen

B. Lecavalier

B. Loomis

S. Luthcke

M. McMillan

D. Melini

S. Mernild

Y. Mohajerani

P. Moore

J. Mouginot

G. Moyano

A. Muir

T. Nagler

Dr Grace Nield grace.a.nield@durham.ac.uk
Assistant Professor

J. Nilsson

B. Noel

I. Otosaka

M.P. Pattle

W.R. Peltier

P. Nadege

R. Rietbroek

H. Rott

L. Sandberg-Sørensen

I. Sasgen

H. Save

E. Schrama

L. Schröder

K-W. Seo

S. Simonsen

T. Slater

G. Spada

T. Sutterley

M. Talpe

L. Tarasov

W.J. van de Berg

W. van der Wal

M. van Wessem

B.D. Vishwakarma

D. Wiese

B. Wouters

Abstract

The Antarctic Ice Sheet is an important indicator of climate change and driver of sea-level rise. Here we combine satellite observations of its changing volume, flow and gravitational attraction with modelling of its surface mass balance to show that it lost 2,720 ± 1,390 billion tonnes of ice between 1992 and 2017, which corresponds to an increase in mean sea level of 7.6 ± 3.9 millimetres (errors are one standard deviation). Over this period, ocean-driven melting has caused rates of ice loss from West Antarctica to increase from 53 ± 29 billion to 159 ± 26 billion tonnes per year; ice-shelf collapse has increased the rate of ice loss from the Antarctic Peninsula from 7 ± 13 billion to 33 ± 16 billion tonnes per year. We find large variations in and among model estimates of surface mass balance and glacial isostatic adjustment for East Antarctica, with its average rate of mass gain over the period 1992–2017 (5 ± 46 billion tonnes per year) being the least certain.

Citation

Shepherd, A., Ivins, E., Rignot, E., Smith, B., van den Broeke, M., Velicogna, I., …Wouters, B. (2018). Mass balance of the Antarctic ice sheet from 1992 to 2017. Nature, 558(7709), 219-222. https://doi.org/10.1038/s41586-018-0179-y

Journal Article Type	Article
Acceptance Date	Apr 24, 2018
Online Publication Date	Jun 13, 2018
Publication Date	Jun 13, 2018
Deposit Date	May 14, 2018
Publicly Available Date	Dec 13, 2018
Journal	Nature
Print ISSN	0028-0836
Electronic ISSN	1476-4687
Publisher	Nature Research
Peer Reviewed	Peer Reviewed
Volume	558
Issue	7709
Pages	219-222
DOI	https://doi.org/10.1038/s41586-018-0179-y
Public URL	https://durham-repository.worktribe.com/output/1331072