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Projected land ice contributions to twenty-first-century sea level rise

Urheber*innen

Edwards,  Tamsin L.
External Organizations;

Nowicki,  Sophie
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Marzeion,  Ben
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Hock,  Regine
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Goelzer,  Heiko
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Seroussi,  Hélène
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Smith,  Christopher J.
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Jourdain,  Nicolas C.
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Slater,  Donald
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McKenna,  Christine M.
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Simon,  Erika
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Abe-Ouchi,  Ayako
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Gregory,  Jonathan M.
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Larour,  Eric
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Lipscomb,  William H.
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Payne,  Antony J.
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Shepherd,  Andrew
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Turner,  Fiona
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Agosta,  Cécile
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Alexander,  Patrick
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/persons/resource/Torsten.Albrecht

Albrecht,  Torsten
Potsdam Institute for Climate Impact Research;

Anderson,  Brian
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Asay-Davis,  Xylar
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Aschwanden,  Andy
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Barthel,  Alice
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Bliss,  Andrew
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/persons/resource/Reinhard.Calov

Calov,  Reinhard
Potsdam Institute for Climate Impact Research;

Chambers,  Christopher
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Champollion,  Nicolas
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Choi,  Youngmin
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Cullather,  Richard
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Cuzzone,  Joshua
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Dumas,  Christophe
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Felikson,  Denis
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Fettweis,  Xavier
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Fujita,  Koji
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Galton-Fenzi,  Benjamin K.
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Gladstone,  Rupert
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Golledge,  Nicholas R.
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Greve,  Ralf
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Hattermann,  Tore
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Hoffman,  Matthew J.
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Humbert,  Angelika
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Huss,  Matthias
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Huybrechts,  Philippe
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Immerzeel,  Walter
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Kleiner,  Thomas
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Kraaijenbrink,  Philip
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Le clec'h,  Sébastien
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Lee,  Victoria
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Leguy,  Gunter R.
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Little,  Christopher M.
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Lowry,  Daniel P.
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Malles,  Jan-Hendrik
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Martin,  Daniel F.
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Maussion,  Fabien
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Morlighem,  Mathieu
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O'Neill,  James F.
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Nias,  Isabel
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Pattyn,  Frank
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Pelle,  Tyler
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Price,  Stephen
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Quiquet,  Aurélien
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Radić,  Valentina
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/persons/resource/Ronja.Reese

Reese,  Ronja
Potsdam Institute for Climate Impact Research;

Rounce,  David R.
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Rückamp,  Martin
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Sakai,  Akiko
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Shafer,  Courtney
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Schlegel,  Nicole-Jeanne
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Shannon,  Sarah
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Smith,  Robin S.
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Straneo,  Fiammetta
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Sun,  Sainan
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Tarasov,  Lev
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Trusel,  Luke D.
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Breedam,  Jonas Van
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van de Wal,  Roderik
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van den Broeke,  Michiel
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/persons/resource/Ricarda.Winkelmann

Winkelmann,  Ricarda
Potsdam Institute for Climate Impact Research;

Zekollari,  Harry
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Zhao,  Chen
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Zhang,  Tong
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Zwinger,  Thomas
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Volltexte (frei zugänglich)

25040oa_postprint.pdf
(Postprint), 41MB

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Zitation

Edwards, T. L., Nowicki, S., Marzeion, B., Hock, R., Goelzer, H., Seroussi, H., Smith, C. J., Jourdain, N. C., Slater, D., McKenna, C. M., Simon, E., Abe-Ouchi, A., Gregory, J. M., Larour, E., Lipscomb, W. H., Payne, A. J., Shepherd, A., Turner, F., Agosta, C., Alexander, P., Albrecht, T., Anderson, B., Asay-Davis, X., Aschwanden, A., Barthel, A., Bliss, A., Calov, R., Chambers, C., Champollion, N., Choi, Y., Cullather, R., Cuzzone, J., Dumas, C., Felikson, D., Fettweis, X., Fujita, K., Galton-Fenzi, B. K., Gladstone, R., Golledge, N. R., Greve, R., Hattermann, T., Hoffman, M. J., Humbert, A., Huss, M., Huybrechts, P., Immerzeel, W., Kleiner, T., Kraaijenbrink, P., Le clec'h, S., Lee, V., Leguy, G. R., Little, C. M., Lowry, D. P., Malles, J.-H., Martin, D. F., Maussion, F., Morlighem, M., O'Neill, J. F., Nias, I., Pattyn, F., Pelle, T., Price, S., Quiquet, A., Radić, V., Reese, R., Rounce, D. R., Rückamp, M., Sakai, A., Shafer, C., Schlegel, N.-J., Shannon, S., Smith, R. S., Straneo, F., Sun, S., Tarasov, L., Trusel, L. D., Breedam, J. V., van de Wal, R., van den Broeke, M., Winkelmann, R., Zekollari, H., Zhao, C., Zhang, T., Zwinger, T. (2021): Projected land ice contributions to twenty-first-century sea level rise. - Nature, 593, 7857, 74-82.
https://doi.org/10.1038/s41586-021-03302-y


Zitierlink: https://publications.pik-potsdam.de/pubman/item/item_25040
Zusammenfassung
The land ice contribution to global mean sea level rise has not yet been predicted with ice sheet and glacier models for the latest set of socio-economic scenarios, nor with coordinated exploration of uncertainties arising from the various computer models involved. Two recent international projects generated a large suite of projections using 100 multiple models, but mostly used previous generation scenarios and climate models, and could not fully explore known uncertainties. Here we estimate probability distributions for these projections under the new scenarios using statistical emulation of the ice sheet and glacier models, and find that limiting global warming to 1.5°C since preindustrial would halve the land ice contribution to sea level rise this century, relative to 105 predictions for current climate pledges under the Paris Agreement: the median 4 decreases from 25 to 13 cm sea level equivalent (SLE) by 2100, with glaciers responsible for half the sea level contribution. The Antarctic contribution does not show a clear response to emissions scenario, due to competing processes of increasing ice loss and snowfall accumulation in a warming climate. However, under risk-averse (pessimistic) assumptions, Antarctic ice loss could be five times higher, increasing 110 the median land ice contribution to 42 cm SLE under current policies and pledges, with the upper end (95th percentile) exceeding half a metre even under 1.5°C warming. This would severely limit the possibility of mitigating future coastal flooding. Until climate policies and the Antarctic response are further constrained, adaptation must therefore plan for a factor 115 of three uncertainty in the land ice contribution to global mean sea level rise.