World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Reducing Uncertainties in Projections of Antarctic Ice Mass Loss : Volume 9, Issue 2 (29/04/2015)

By Durand, G.

Click here to view

Book Id: WPLBN0004023202
Format Type: PDF Article :
File Size: Pages 30
Reproduction Date: 2015

Title: Reducing Uncertainties in Projections of Antarctic Ice Mass Loss : Volume 9, Issue 2 (29/04/2015)  
Author: Durand, G.
Volume: Vol. 9, Issue 2
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Durand, G., & Pattyn, F. (2015). Reducing Uncertainties in Projections of Antarctic Ice Mass Loss : Volume 9, Issue 2 (29/04/2015). Retrieved from http://www.ebooklibrary.org/


Description
Description: CNRS, LGGE, 38041 Grenoble, France. Climate model projections are often aggregated into multi-model averages of all models participating in an Intercomparison Project, such as the Coupled Model Intercomparison Project (CMIP). A first initiative of the ice-sheet modeling community, SeaRISE, to provide multi-model average projections of polar ice sheets' contribution to sea-level rise recently emerged. SeaRISE Antarctic numerical experiments aggregate results from all models willing to participate without any selection of the models regarding the processes implemented in. Here, using the experimental set-up proposed in SeaRISE we confirm that the representation of grounding line dynamics is essential to infer future Antarctic mass change. We further illustrate the significant impact on the ensemble mean and deviation of adding one model with a known biais in its ability of modeling grounding line dynamics. We show that this biased model can hardly be discriminated from the ensemble only based on its estimation of volume change. However, tools are available to test parts of the response of marine ice sheet models to perturbations of climatic and/or oceanic origin (MISMIP, MISMIP3d). Based on recent projections of the Pine Island Glacier mass loss, we further show that excluding ice sheet models that do not pass the MISMIP benchmarks decreases by an order of magnitude the mean contribution and standard deviation of the multi-model ensemble projection for that particular drainage basin.

Summary
Reducing uncertainties in projections of Antarctic ice mass loss

Excerpt
Bamber, J. L., Riva, R. E. M., Vermeersen, B. L. A., and LeBrocq, A. M.: Reassessment of the potential sea-level rise from a collapse of the West Antarctic Ice Sheet, Science, 324, 901–903, doi:10.1126/science.1169335, 2009.; Blatter, H.: Velocity and stress fields in grounded glaciers: a simple algorithm for including deviatoric stress gradients, J. Glaciol., 41, 333–344, 1995.; Baral, D. R., Hutter, K., and Greve, R.: Asymptotic theories of large-scale motion, temperature, and moisture distribution in land-based polythermal ice sheets: a critical review and new developments, Appl. Mech. Rev., 54, 215–256, 2001.; Bindschadler, R. A., Nowicki, S., Abe-Ouchi, A., Aschwanden, A., Choi, H., Fastook, J., Granzow, G., Greve, R., Gutowski, G., Herzfeld, U., Jackson, C., Johnson, J., Khroulev, C., Levermann, A., Lipscomb, W. H., Martin, M. A., Morlighem, M., Parizek, B. R., Pollard, D., Price, S. F., Ren, D., Saito, F., Sato, T., Seddik, H., Seroussi, H., Takahashi, K., Walker, R., and Wang, W. L.: Ice-sheet model sensitivities to environmental forcing and their use in projecting future sea level (the SeaRISE project), Journal of Glaciology, 59, 195–224, doi:doi:10.3189/2013JoG12J125, 2013.; Church, J., Clark, P., Cazenave, A., Gregory, J., Jevrejeva, S., Levermann, A., Merrifield, M., Milne, G., Nerem, R., Nunn, P., Payne, A., Pfeffer, W., Stammer, D., and Unnikrishnan, A.: Sea level change, in: Climate Change 2013: The Physical Science Basis, Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Stocker, T., Qin, D., Plattner, G.-K., Tignor, M., Allen, S., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P., Cambridge University Press, Cambridge, UK, New York, NY, USA, 1137–1216 , 2013.; Cornford, S. L., Martin, D. F., Graves, D. T., Ranken, D. F., Brocq, A. M. L., Gladstone, R. M., Payne, A. J., Ng, E. G., and Lipscomb, W. H.: Adaptive mesh, finite volume modeling of marine ice sheets, J. Comput. Phys., 232, 529–549, doi:10.1016/j.jcp.2012.08.037, 2013.; Docquier, D., Perichon, L., and Pattyn, F.: Representing grounding line dynamics in numerical ice sheet models: recent advances and outlook, Surv. Geophys., 32, 417–435, 2011.; Drouet, A. S., Docquier, D., Durand, G., Hindmarsh, R., Pattyn, F., Gagliardini, O., and Zwinger, T.: Grounding line transient response in marine ice sheet models, The Cryosphere, 7, 395–406, doi:10.5194/tc-7-395-2013, 2013.; Durand, G., Gagliardini, O., de Fleurian, B., Zwinger, T., and Le Meur, E.: Marine ice sheet dynamics: hysteresis and neutral equilibrium, J. Geophys. Res.-Earth, 114, F03009, doi:10.1029/2008JF001170, 2009.; Fastook, J. L. and Holmlund, P.: A glaciological model of the Younger Dryas event in Scandinavia, J. Glaciol., 40, 125–131, 1994.; Favier, L., Durand, G., Cornford, S., Gudmundsson, G., Gagliardini, O., Gillet-Chaulet, F., Zwinger, T., Payne, A., and Le Brocq, A.: Retreat of Pine Island Glacier controlled by marine ice-sheet instability, Nature Clim. Change, 4, 117–121, 2014.; Gillet-Chaulet, F. and Durand, G.: Glaciology: ice-sheet advance in Antarctica, Nature, 467, 794–795, doi:10.1038/467794a, 2010.; Gillet-Chaulet, F., Gagliardini, O., Seddik, H., Nodet, M., Durand, G., Ritz, C., Zwinger, T., Greve, R., and Vaughan, D. G.: Greenland ice sheet contribution to sea-level rise from a new-generation ice-sheet model, The Cryosphere, 6, 1561–1576, doi:10.5194/tc-6-1561-2012, 2012.; Hutter, K.: Theoretical Glaciology: Material Science of Ice and the Mechanics of

 

Click To View

Additional Books


  • Layer Disturbances and the Radio-echo Fr... (by )
  • Glacier Changes in the Karakoram Region ... (by )
  • Assessing Spatio-temporal Variability an... (by )
  • A Sea Ice Thickness Retrieval Model for ... (by )
  • Local Scaling Characteristics of Antarct... (by )
  • Spatial Structures in the Heat Budget of... (by )
  • A Novel Integrated Method to Describe Du... (by )
  • Mapping Radiation Transfer Through Sea I... (by )
  • The Impact of Ice Layers on Gas Transpor... (by )
  • Influence of Ablation-related Processes ... (by )
  • A Process-based Approach to Estimate Poi... (by )
  • A Sea Ice Concentration Estimation Algor... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.