Mass balance of the Antarctic Ice Sheet from 1992 to 2017

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 betwe...

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Vydáno v:	Nature (London) Ročník 558; číslo 7709; s. 219 - 222
Hlavní autoři:	Shepherd, Andrew, Ivins, Erik, Rignot, Eric, Smith, Ben, van den Broeke, Michiel, Velicogna, Isabella, Whitehouse, Pippa, Briggs, Kate, Joughin, Ian, Krinner, Gerhard, Nowicki, Sophie, Payne, Tony, Scambos, Ted, Schlegel, Nicole, Geruo, A, Agosta, Cécile, Ahlstrøm, Andreas, Babonis, Greg, Barletta, Valentina, Blazquez, Alejandro, Bonin, Jennifer, Csatho, Beata, Cullather, Richard, Felikson, Denis, Fettweis, Xavier, sberg, Rene, Gallee, Hubert, Gardner, Alex, Gilbert, Lin, Groh, Andreas, Gunter, Brian, Hanna, Edward, Harig, Christopher, Helm, Veit, Horvath, Alexander, Horwath, Martin, Khan, Shfaqat, Kjeldsen, Kristian K, Konrad, Hannes, Langen, Peter, Lecavalier, Benoit, Loomis, Bryant, Luthcke, Scott, McMillan, Malcolm, Melini, Daniele, Mernild, Sebastian, Mohajerani, Yara, Moore, Philip, Mouginot, Jeremie, Moyano, Gorka, Muir, Alan, Nagler, Thomas, Nield, Grace, Nilsson, Johan, Noel, Brice, Otosaka, Ines, Pattle, Mark E, Peltier, W Richard, Pie, Nadege, Rietbroek, Roelof, Rott, Helmut, Sandberg-Sørensen, Louise, Sasgen, Ingo, Save, Himanshu, Scheuchl, Bernd, Schrama, Ernst, Schröder, Ludwig, Seo, Ki-Weon, Simonsen, Sebastian, Slater, Tom, Spada, Giorgio, Sutterley, Tyler, Talpe, Matthieu, Tarasov, Lev, van de Berg, Willem Jan, van der Wal, Wouter, vanWessem, Melchior, Vishwakarma, Bramha Dutt, Wiese, David, Wouters, Bert
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	London Nature Publishing Group UK 01.06.2018 Nature Publishing Group
Témata:	704/106/125 704/106/694/2739 Analysis Antarctic ice sheet Climate change Earth sciences & physical geography Environmental Sciences Geological research Global temperature changes Gravitational collapse Gravity Humanities and Social Sciences Ice Ice sheets Ice shelves Influence Mass balance of glaciers Mass balance of ice sheets Mean sea level multidisciplinary Oceans Physical, chemical, mathematical & earth Sciences Physique, chimie, mathématiques & sciences de la terre Satellite observation Science Science (multidisciplinary) Sciences de la terre & géographie physique Sea level Sea level changes Sea level rise Snow Trends Antarctica Amundsen Sea Lake Vostok Antarctic Peninsula Greenland
ISSN:	0028-0836, 1476-4687, 1476-4687
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Shrnutí:	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.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 scopus-id:2-s2.0-85048572838
ISSN:	0028-0836 1476-4687 1476-4687
DOI:	10.1038/s41586-018-0179-y