21st-century evolution of Greenland outlet glacier velocities

Science
T MoonI Howat

Abstract

Earlier observations on several of Greenland's outlet glaciers, starting near the turn of the 21st century, indicated rapid (annual-scale) and large (>100%) increases in glacier velocity. Combining data from several satellites, we produce a decade-long (2000 to 2010) record documenting the ongoing velocity evolution of nearly all (200+) of Greenland's major outlet glaciers, revealing complex spatial and temporal patterns. Changes on fast-flow marine-terminating glaciers contrast with steady velocities on ice-shelf-terminating glaciers and slow speeds on land-terminating glaciers. Regionally, glaciers in the northwest accelerated steadily, with more variability in the southeast and relatively steady flow elsewhere. Intraregional variability shows a complex response to regional and local forcing. Observed acceleration indicates that sea level rise from Greenland may fall well below proposed upper bounds.

References

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Citations

Dec 1, 2012·Proceedings. Mathematical, Physical, and Engineering Sciences·C Rosie WilliamsRobert J Arthern
May 5, 2012·Science·Richard B Alley, Ian Joughin
Dec 1, 2012·Science·Ian JoughinDavid M Holland
Dec 1, 2012·Science·Andrew ShepherdH Jay Zwally
Feb 26, 2016·Science·Joseph A MacGregorS Prasad Gogineni
Dec 17, 2014·Proceedings of the National Academy of Sciences of the United States of America·Beata M CsathoJan H van Angelen
Mar 31, 2015·Geophysical Research Letters·Twila MoonMika Usher
Jul 28, 2015·Journal of Geophysical Research. Earth Surface·Joseph A MacGregorMathieu Morlighem
Oct 28, 2016·Biology Letters·Kristin L LaidreBen Hudson
Nov 24, 2017·Scientific Reports·James D KirkhamWitold Szczuciński
Jan 1, 2017·Geoscientific Model Development·Stephen F PriceSophie M J Nowicki
Feb 3, 2016·Nature Communications·Andy AschwandenMartin Truffer
May 10, 2013·Nature·Faezeh M NickRoderik S W van de Wal
Dec 7, 2013·Nature·Fiammetta Straneo, Patrick Heimbach
Jun 7, 2013·Nature·Edward HannaH Jay Zwally
Mar 27, 2015·Reports on Progress in Physics·Shfaqat A KhanKurt H Kjær
Dec 11, 2019·Nature·UNKNOWN IMBIE Team
Jul 22, 2019·Nature Communications·Surui XieIrena Vaňková
Jun 26, 2018·Journal of Geophysical Research. Oceans·J L BamberB Noel
Feb 1, 2018·The Journal of Glaciology·Ian JoughinIan M Howat
Feb 1, 2016·The Journal of Glaciology·Ian JoughinTed A Scambos
Jan 1, 2018·The Cryosphere·Michalea D KingMichiel R van den Broeke
Sep 28, 2017·Scientific Reports·Laurence M DykeFlor Vermassen
Nov 19, 2020·Nature Communications·Shfaqat A KhanToni Schenk

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