Search Results - (Author, Cooperation:D. J. Wingham)
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1Latest Papers from Table of Contents or Articles in PressA. Shepherd ; E. R. Ivins ; G. A ; V. R. Barletta ; M. J. Bentley ; S. Bettadpur ; K. H. Briggs ; D. H. Bromwich ; R. Forsberg ; N. Galin ; M. Horwath ; S. Jacobs ; I. Joughin ; M. A. King ; J. T. Lenaerts ; J. Li ; S. R. Ligtenberg ; A. Luckman ; S. B. Luthcke ; M. McMillan ; R. Meister ; G. Milne ; J. Mouginot ; A. Muir ; J. P. Nicolas ; J. Paden ; A. J. Payne ; H. Pritchard ; E. Rignot ; H. Rott ; L. S. Sorensen ; T. A. Scambos ; B. Scheuchl ; E. J. Schrama ; B. Smith ; A. V. Sundal ; J. H. van Angelen ; W. J. van de Berg ; M. R. van den Broeke ; D. G. Vaughan ; I. Velicogna ; J. Wahr ; P. L. Whitehouse ; D. J. Wingham ; D. Yi ; D. Young ; H. J. Zwally
American Association for the Advancement of Science (AAAS)
Published 2012Staff ViewPublication Date: 2012-12-01Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsKeywords: Antarctic Regions ; *Climate Change ; Geographic Information Systems ; Greenland ; *Ice CoverPublished by: -
2Articles: DFG German National LicensesStaff View
ISSN: 1573-1480Source: Springer Online Journal Archives 1860-2000Topics: GeosciencesPhysicsNotes: Abstract A one-dimensional, numerical model of time-evolving firn densification was used to simulate the response of the density profile through an ice sheet to changes in the temperature, density and accumulation rate at the surface. The equilibrium response of the model was compared with ice-core density profiles from Byrd, Antarctica and Site 2, Greenland, and the model predicted the density to within 10% of both cores. The response of the model to step-wise changes and random fluctuations in the surface boundary conditions was investigated. The standard deviation of elevation changes as a function of observation interval was computed. These changes were found to be small in comparison with the magnitude of present uncertainties in the mass balances of the Antarctic and Greenland Ice Sheets. It was concluded that, in the dry snow zones, natural variability in the densification will not prevent the geodetic determination of ice sheet mass balance from improving upon current estimates. Uncertainty in the constitutive equation for snow and firn is the dominant source of error in the calculations.Type of Medium: Electronic ResourceURL: