HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Institute of Low Temperature Science >
Peer-reviewed Journal Articles, etc >

Resolution of ice streams and outlet glaciers in large-scale simulations of the Greenland ice sheet

Files in This Item:
Greve_Herzfeld_2013_AnnGlac.pdf1.47 MBPDFView/Open
Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/53424

Title: Resolution of ice streams and outlet glaciers in large-scale simulations of the Greenland ice sheet
Authors: Greve, Ralf Browse this author →KAKEN DB
Herzfeld, Ute C. Browse this author
Issue Date: Jul-2013
Publisher: Int Glaciol Soc
Journal Title: Annals of Glaciology
Volume: 54
Issue: 63
Start Page: 209
End Page: 220
Publisher DOI: 10.3189/2013AoG63A085
Abstract: The dynamic/thermodynamic shallow-ice model SICOPOLIS is applied to the Greenland ice sheet. Paleoclimatic spin-ups from 125 ka BP until today, as well as future-climate experiments 500 years into the future, are carried out with three different grid spacings, namely 20,10 and 5 km. The scenarios are a subset of those specified by the SeaRISE (Sea-level Response to Ice Sheet Evolution) community effort. The bed topography includes improved troughs for Jakobshavn Isbrae, Helheim, Kangerdlugssuaq and Petermann glaciers, processed by an algorithm that preserves shape, orientation and continuity of the troughs on the 5 km scale. Comparison of simulated and observed present-day surface velocities shows that these ice streams and outlet glaciers are resolved with different accuracies, ranging from poor (20 km grid) to reasonably good (5 km grid). In the future-climate experiments, the simulated absolute ice volumes depend significantly on the resolution, while the sensitivities (ice volumes relative to the constant-climate control run) vary only by a few centimeters of sea-level equivalent.
Rights: Copyright (c) 2013 International Glaciological Society
Relation: http://www.igsoc.org/
Type: article
URI: http://hdl.handle.net/2115/53424
Appears in Collections:低温科学研究所 (Institute of Low Temperature Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: Greve Ralf

Export metadata:

OAI-PMH ( junii2 , jpcoar )


 

Feedback - Hokkaido University