Quantifying the Impact of Bedrock Topography Uncertainty in Pine Island Glacier Projections for This Century
Quantifying the Impact of Bedrock Topography Uncertainty in Pine Island Glacier Projections for This Century
复制标题
量化本世纪松岛冰川预测中基岩地形不确定性的影响
DOI:
10.1029/2021gl096589
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发表时间:
2022
影响因子:
5.2
通讯作者:
S. Cornford
中科院分区:
文献类型:
--
作者:
A. Wernecke;T. Edwards;P. Holden;N. Edwards;S. Cornford
The predicted Antarctic contribution to global‐mean sea‐level rise is one of the most uncertain among all major sources. Partly this is because of instability mechanisms of the ice flow over deep basins. Errors in bedrock topography can substantially impact the projected resilience of glaciers against such instabilities. Here we analyze the Pine Island Glacier topography to derive a statistical model representation. Our model allows for inhomogeneous and spatially dependent uncertainties and avoids unnecessary smoothing from spatial averaging or interpolation. A set of topography realizations is generated representing our best estimate of the topographic uncertainty in ice sheet model simulations. The bedrock uncertainty alone creates a 5%–25% uncertainty in the predicted sea level rise contribution at year 2100, depending on friction law and climate forcing. Pine Island Glacier simulations on this new set are consistent with simulations on the BedMachine reference topography but diverge from Bedmap2 simulations.
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影响因子:
30.7
作者:
Favier, L.;Durand, G.;Le Brocq, A. M.
通讯作者:
Le Brocq, A. M.
影响因子:
18.3
作者:
Rignot, Eric;Bamber, Jonathan L.;Van Meijgaard, Erik
通讯作者:
Van Meijgaard, Erik
DOI:
10.5194/tc-14-3111-2020
发表时间:
2020
期刊:
The Cryosphere
影响因子:
--
作者:
Jourdain, Nicolas C.;Asay-Davis, Xylar;Hattermann, Tore;Straneo, Fiammetta;Seroussi, Hélène;Little, Christopher M.;Nowicki, Sophie
通讯作者:
Nowicki, Sophie
影响因子:
4.1
作者:
Cornford, Stephen L.;Martin, Daniel F.;Lipscomb, William H.
通讯作者:
Lipscomb, William H.
DOI:
10.5194/tc-14-3033-2020
发表时间:
2020
期刊:
The Cryosphere
影响因子:
--
作者:
Seroussi, Hélène;Nowicki, Sophie;Payne, Antony J.;Goelzer, Heiko;Lipscomb, William H.;Abe-Ouchi, Ayako;Agosta, Cécile;Albrecht, Torsten;Asay-Davis, Xylar;Barthel, Alice
通讯作者:
Barthel, Alice