Mass balance of the Antarctic Ice Sheet from 1992 to 2017

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作者
机构
[1] University of Leeds,Centre for Polar Observation and Modelling
[2] NASA Jet Propulsion Laboratory,Department of Earth System Science
[3] University of California,Department of Earth and Space Sciences
[4] University of Washington,Institute for Marine and Atmospheric Research
[5] Utrecht University,Department of Geography
[6] Durham University,Institute of Environmental Geosciences
[7] Université Grenoble Alpes,Cryospheric Sciences Laboratory
[8] NASA Goddard Space Flight Centre,School of Geographical Sciences
[9] University of Bristol,National Snow and Ice Data Centre
[10] University of Colorado,Department of Geography
[11] University of Liège,Department of Geology
[12] Geological Survey of Denmark and Greenland,DTU Space, National Space Institute
[13] State University of New York at Buffalo,College of Marine Sciences
[14] Technical University of Denmark,Earth System Science Interdisciplinary Centre
[15] Spatial Geophysics and Oceanography Studies Laboratory,Centre for Space Research
[16] University of South Florida,Mullard Space Science Laboratory
[17] NASA Goddard Space Flight Centre,Institute for Planetary Geodesy
[18] University of Texas,Daniel Guggenheim School of Aerospace Engineering
[19] University College London,School of Geography
[20] Technische Universitat Dresden,Department of Geosciences
[21] Georgia Institute of Technology,Alfred Wegener Institute
[22] University of Lincoln,Institute of Astronomical and Physical Geodesy
[23] University of Arizona,Centre for GeoGenetics
[24] Helmholtz Centre for Polar and Marine Research,Department of Physics and Physical Oceanography
[25] Technical University Munich,Section of Seismology and Tectonophysics
[26] Natural History Museum of Denmark,Faculty of Engineering and Science
[27] Danish Meteorological Institute,Direction of Antarctic and Sub
[28] Memorial University of Newfoundland,Antarctic Programs
[29] National Institute of Geophysics and Volcanology,School of Civil Engineering and Geosciences
[30] Nansen Environmental and Remote Sensing Centre,Department of Physics
[31] Western Norway University of Applied Sciences,Institute of Geodesy and Geoinformation
[32] Universidad de Magallanes,Department of Space Engineering
[33] Newcastle University,Department of Earth Science Education
[34] isardSAT,Institute of Physics
[35] ENVEO,Aerospace Engineering Sciences, Centre for Astrodynamics Research
[36] University of Toronto,Geodetic Institute
[37] University of Bonn,undefined
[38] Delft University of Technology,undefined
[39] Seoul National University,undefined
[40] University of Urbino “Carlo Bo”,undefined
[41] University of Colorado,undefined
[42] University of Stuttgart,undefined
来源
Nature | 2018年 / 558卷
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摘要
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.
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页码:219 / 222
页数:3
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