TY - JOUR
T1 - The Greenland and Antarctic ice sheets under 1.5 °C global warming
AU - Pattyn, Frank
AU - Ritz, Catherine
AU - Hanna, Edward
AU - Asay-Davis, Xylar
AU - DeConto, Rob
AU - Durand, Gaël
AU - Favier, Lionel
AU - Fettweis, Xavier
AU - Goelzer, Heiko
AU - Golledge, Nicholas R.
AU - Kuipers Munneke, Peter
AU - Lenaerts, Jan T.M.
AU - Nowicki, Sophie
AU - Payne, Antony J.
AU - Robinson, Alexander
AU - Seroussi, Hélène
AU - Trusel, Luke D.
AU - van den Broeke, Michiel
N1 - Funding Information:
This paper is the result of the 2017 ISMASS (Ice-Sheet Mass Balance and Sea Level) workshop held in Brussels (Belgium), co-sponsored by WCRP/CliC (http://www.climate-cryosphere.org/activities/groups/ismass), IASC and SCAR. H.G., P.K.M. and M.v.d.B. acknowledge support from the NESSC.
Publisher Copyright:
© 2018, Springer Nature Limited.
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Even if anthropogenic warming were constrained to less than 2 °C above pre-industrial, the Greenland and Antarctic ice sheets will continue to lose mass this century, with rates similar to those observed over the past decade. However, nonlinear responses cannot be excluded, which may lead to larger rates of mass loss. Furthermore, large uncertainties in future projections still remain, pertaining to knowledge gaps in atmospheric (Greenland) and oceanic (Antarctica) forcing. On millennial timescales, both ice sheets have tipping points at or slightly above the 1.5–2.0 °C threshold; for Greenland, this may lead to irreversible mass loss due to the surface mass balance–elevation feedback, whereas for Antarctica, this could result in a collapse of major drainage basins due to ice-shelf weakening.
AB - Even if anthropogenic warming were constrained to less than 2 °C above pre-industrial, the Greenland and Antarctic ice sheets will continue to lose mass this century, with rates similar to those observed over the past decade. However, nonlinear responses cannot be excluded, which may lead to larger rates of mass loss. Furthermore, large uncertainties in future projections still remain, pertaining to knowledge gaps in atmospheric (Greenland) and oceanic (Antarctica) forcing. On millennial timescales, both ice sheets have tipping points at or slightly above the 1.5–2.0 °C threshold; for Greenland, this may lead to irreversible mass loss due to the surface mass balance–elevation feedback, whereas for Antarctica, this could result in a collapse of major drainage basins due to ice-shelf weakening.
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U2 - 10.1038/s41558-018-0305-8
DO - 10.1038/s41558-018-0305-8
M3 - Review article
AN - SCOPUS:85056662573
SN - 1758-678X
VL - 8
SP - 1053
EP - 1061
JO - Nature Climate Change
JF - Nature Climate Change
IS - 12
ER -