World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Mass Change of Arctic Ice Caps and Glaciers: Implications of Regionalizing Elevation Changes : Volume 7, Issue 6 (11/12/2013)

By Nilsson, J.

Click here to view

Book Id: WPLBN0004022956
Format Type: PDF Article :
File Size: Pages 32
Reproduction Date: 2015

Title: Mass Change of Arctic Ice Caps and Glaciers: Implications of Regionalizing Elevation Changes : Volume 7, Issue 6 (11/12/2013)  
Author: Nilsson, J.
Volume: Vol. 7, Issue 6
Language: English
Subject: Science, Cryosphere, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Forsberg, R., Barletta, V. R., Sørensen, L. S., & Nilsson, J. (2013). Mass Change of Arctic Ice Caps and Glaciers: Implications of Regionalizing Elevation Changes : Volume 7, Issue 6 (11/12/2013). Retrieved from

Description: Department of Geodynamics, DTU Space, Technical University of Denmark, Elektrovej 327, 2800 Lyngby, Denmark. Recent studies have determined mass changes of Arctic ice caps and glaciers from satellite altimetry. Determining regional mass balance of ice caps and glaciers using this technique is inherently difficult due to their size and geometry. Furthermore these studies have mostly relied on one method or the same types of methods to determine the regional mass balance, by extrapolating elevation changes using their relation to elevation. This makes the estimation of mass balance heavily dependent on the method used to regionalize the elevation changes. Left without consideration large discrepancies can arise in the mass change estimates and the interpretation of them. In this study we use Ice, Cloud, and land Elevation Satellite (ICESat) derived elevation changes from 2003–2009 and determine the impact of different regionalizing schemes on the mass change estimates of the Arctic ice caps and glaciers. Four different methods, based on interpolation and extrapolation of the elevation changes were used to quantify this effect on the regional mass changes. Secondly, a statistical criteria was developed to determine the optimum method for each region in order to derive robust mass changes and reduce the need of external validation data. In this study we found that the range or spread of the estimated mass changes, for the different regions, was highly correlated to the inter-annual variability of the elevation changes, driven by the different climatic conditions of the regions. Regions affected by a maritime climate show a large range in estimated values, on average 1.5–2 times larger than the predicted errors. For regions in a continental regime the opposite was observed, and the range of the values lies well inside the error estimates. We also found that the extrapolation methods tend on average to produce more negative values than the interpolation methods and that our four methods do not fully reproduce the original histogram. Instead, they produce more negative distributions than the original which may indicate that previous and these current estimates using ICESat observations might be overestimate by as much as 4–19%, depending on region. This should therefore be taken into account when deriving regional mass balance from satellite altimetry in regions which show high inter-annual variability of elevation changes. In these regions several different independent methods should be used to capture the elevation change pattern and then analyzed to determine the most suitable method. For regions in a continental climate regime, and with low variability of elevation changes, a single method may be sufficient to capture the regional elevation change pattern and hence mass balance.

Mass change of Arctic ice caps and glaciers: implications of regionalizing elevation changes

Radić, V. and Hock, R.: Regionally differentiated contribution of mountain glaciers and ice caps to future sea-level rise, Nat. Geosci., 4, 91–94, doi:10.1038/NGEO1052, 2011.; Shepherd, A., Ivins, E. R., Geruo, A., Barletta, V. R., Bentley, M. J., Bettadpur, S., Briggs, K. H., Bromwich, D. H., Forsberg, R., Galin, N., Horwath, M., Jacobs, S., Joughin, I., King, M. A., Lenaerts, J. T. M., Li, J., Ligtenberg, S. R. M., Luckman, A., Luthcke, S. B., McMillan, M., Meister, R., Milne, G., Mouginot, J., Muir, A., Nicolas, J. P., Paden, J., Payne, A. J., Pritchard, H., Rignot, E., Rott, H., Sørensen, L. S., Scambos, T. A., Scheuchl, B., Schrama, E. J. O., Smith, B., Sundal, A. V., van Angelen, J. H., van de Berg, W. J., van den Broeke, M. R., Vaughan, D. G., Velicogna, I., Wahr, J., Whitehouse, P. L., Wingham, D. J., Yi, D., Young, D., and Zwally, H. J.: A reconciled estimate of ice sheet mass balance, Science, 338, 1183–1189, doi:10.1126/science.1228102, 2012.; Schutz, B. E., Zwally, H. J., Shuman, C. A., Hancock, D., and DiMarzio, J. P.: Overview of the ICESat mission, Geophys. Res. Lett., 32, L21S01, doi:10.1029/2005GL024009, 2005.; Siegfried, M. R., Hawley, R. L., and Burkhart, J. F.: High-resolution ground-based GPS measurements show intercampaign bias in ICESat elevation data near summit, Greenland, IEEE T. Geosci Remote, 49, 3393–3400, doi:10.1109/TGRS.2011.2127483, 2011.; Sørensen, L. S., Simonsen, S. B., Nielsen, K., Lucas-Picher, P., Spada, G., Adalgeirsdottir, G., Forsberg, R., and Hvidberg, C. S.: Mass balance of the Greenland ice sheet (2003–2008) from ICESat data – the impact of interpolation, sampling and firn density, The Cryosphere, 5, 173–186, doi:10.5194/tc-5-173-2011, 2011.; Wingham, D., Ridout, A., Scharroo, R., Arthern, R., and Shum, C. K.: Antartic elevation change from 1992–1996, Science, 282, 456–458, doi:10.1126/science.282.5388.456, 1998.; Abdalati, W., Krabill, W., Fredrick, E., Manizade, S., Martin, C., Sonntag, J., Swift, R., Thomas, R., Yungel, J., and Koerner, R.: Elevation changes of ice caps in the Canadian Arctic Archipelago, J. Geophys. Res., 109, F04007, doi:10.1029/2003JF000045, 2004.; Arendt, A., Echelmeyer, K., Harrison, W., Lingle, C., and Valentine, V.: Rapid wastage of Alaska glaciers and their contribution to rising sea level, Science, 297, 382, doi:10.1126/science.1072497, 2002.; Bamber, J., Krabill, W.,Raper, V., and Dowdeswell, J.: Anomalous recent growth of part of a large Arctic ice cap: Austfonna, Svalbard, Geophys. Res. Lett., 31, L12402, doi:10.1029/2004GL019667, 2004.; Berthier, E., Schiefer, E., Clarke, G. K. C., Menounos, B., and Rémy, F.: Contribution of Alaskan glaciers to sea-level rise derived from satellite imagery, Nat. Geosci., 3, 92–95, doi:10.1038/NGEO737, 2010.; Bolch, T., Sandberg S\o rensen, L., Simonsen, S. B., Mölg N., Machguth, H., Rastner, P., and Paul, F.: Mass loss of Greenland's glaciers and ice caps 2003–2008 revealed from ICESat laser altimetry data, Geophys. Res. Lett., 40, 875–881, doi:10.1002/grl.50270, 2013; Brenner, A., DiMarzio, J. P., and Zwally, H. J.: Precision and accuracy of satellite radar and laser altimeter data over the continental ice sheets, IEEE T. Geosci. Remote, 45, 321–331, doi:10.1109/TGRS.2006


Click To View

Additional Books

  • Influence of Surface Heterogeneity on Ob... (by )
  • Spectral Reflectance of Solar Light from... (by )
  • Increased Rate of Acceleration on Pine I... (by )
  • A Comparison of Basal Reflectivity and I... (by )
  • Comparing C- and L-band Sar Images for S... (by )
  • Sea Ice Inertial Oscillation Magnitudes ... (by )
  • Comparison of a Coupled Snow Thermodynam... (by )
  • A Range Correction for Icesat and Its Po... (by )
  • Site-level Model Intercomparison of High... (by )
  • Improving Estimation of Glacier Volume C... (by )
  • Assessment of Sea Ice Simulations in the... (by )
  • Snow and Albedo Climate Change Impacts A... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from Nook 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.