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Snow- and ice-height change in Antarctica from satellite gravimetry and altimetry data
Citation
Memin, A and Flament, T and Remy, F and Llubes, M, Snow- and ice-height change in Antarctica from satellite gravimetry and altimetry data, Earth and Planetary Science Letters, 404 pp. 344-353. ISSN 0012-821X (2014) [Refereed Article]
Copyright Statement
Copyright 2014 Elsevier B.V.
DOI: doi:10.1016/j.epsl.2014.08.008
Abstract
We combine the surface-elevation and surface-mass change derived from Envisat data and GRACE solutions, respectively, to estimate regional changes in air and ice content of the surface of the Antarctic Ice Sheet (AIS) between January 2003 and October 2010. This leads, upon certain assumptions, to the separation of the rates of recent snow-accumulation change and that of ice-mass change. We obtain that the height of ice in Thwaites and Pine Island glaciers sectors decreases (≤−15.7 cm/yr) while that in the Kamb glacier sector increases (≥5.3 cm/yr). The central part of the East AIS is mostly stable while the whole Dronning Maud Land coast is dominated by an increase in snow accumulation. The Kemp land regions show an ice-mass gain that accounts for 67–74% of the observed rates of elevation change in these regions. A good agreement is obtained over 68% of the investigated area, mostly in the East AIS, between our estimated rates of snow accumulation change and the predicted rates of the monthly surface mass balance derived from a regional atmospheric climate model.
Item Details
Item Type: | Refereed Article |
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Keywords: | Antarctica, ice-height changes, snow-height changes, GRACE, Envisat |
Research Division: | Earth Sciences |
Research Group: | Geophysics |
Research Field: | Geodesy |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the earth sciences |
UTAS Author: | Memin, A (Mr Anthony Memin) |
ID Code: | 94451 |
Year Published: | 2014 |
Web of Science® Times Cited: | 11 |
Deposited By: | Mathematics and Physics |
Deposited On: | 2014-09-09 |
Last Modified: | 2017-10-25 |
Downloads: | 0 |
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