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Seasonal variation of snow-surface elevation in North Greenland as modeled and detected by satellite radar altimetry

  • Jun Li (a1), H. Jay Zwally (a2), Helen Cornejo (a1) and Donghui Yi (a1)

Abstract

Comparison of the distribution of seasonal variations in surface elevation derived from a firn-densification–elevation model with observed variations derived from ERS-1/-2 satellite radar altimetry shows close similarity in the patterns of the amplitude of the variations over the North Greenland ice sheet. The amplitudes of the seasonal variations decrease from west to east and from south to north, determined by the accumulation rate and the surface-temperature distribution pattern. Several methods of estimating the amplitude of the seasonal variation in the observations are compared, including the use of a three-frequency sinusoidal function derived from the modeled seasonal variation that is asymmetric. The resulting correlation coefficient between the observed amplitude, estimated with the three-frequency function, and the modeled amplitude is 0.66 and the slope is 0.7. Residual differences may be caused by interannual variability in accumulation and temperature and other approximations in the model.

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References

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Arthern, R.J. and Wingham, D.J. 1998. The natural fluctuations of firn densification and their effect on the geodetic determination of ice sheet mass balance. Climatic Change, 40(4), 605–624.
Brenner, A. C., Zwally, H. J., Cornejo, H. and Saba, J. L. 2000. Investigation of correlations between variations of radar backscatter with altimeter-derivedice sheet elevation changes and ERS-2/ERS-1 biases. In Sawaya-Lacoste, H., ed. ESA ERS-Envisat Symposium, 16–20 October 2000, Gothenburg. Proceedings. Noordwijk, European Space Agency. Publications Division ESTEC, CD-ROM.
Cuffey, K. M. 2001. Interannual variability of elevation on the Greenland ice sheet: effects of firn densification, and establishment of a multi-century benchmark. J. Glaciol.,47(158), 369–377.
Herron, M. M. and Langway, C. C. Jr., 1980. Firn densification: an empirical model. J. Glaciol.,25(93), 373–385.
Jacka, T.H. and LiJun 1994. The steady-state crystal size of deforming ice. Ann. Glaciol., 20, 13–18.
McConnell, J. R., Mosley-Thompson, E., Bromwich, D. H., Bales, R. C. and Kyne, J. D. 2000. Interannual variations of snow accumulation on the Greenland ice sheet (1985–1996): new observations versus model predictions. J. Geophys. Res., 105(D3), 4039–4046.
Steffen, K., Box, J.E. and Estupinen, J. 1999. Greenland ice sheet climatology: GC-NETstatus and applications. In Program for Arctic regional climate assessment (PARCA). Report of the Greenland science and planning meeting, 5–6 1998, NASA Wallops Flight Facility, Wallops Island, VA. Hanover, NH, NASA Center for Aerospace Information, 63–70.
Wingham, D.J. 2000. Small fluctuations in the density and thickness of a dry firn column. J. Glaciol.,46(154), 399–411.
Wingham, D. J., Ridout, A. L., Scharroo, R., Arthern, R. J. and Shum, C. K. 1998. Antarctic elevation change 1992 to 1996. Science, 282(5388), 456–458.
Zwally, H. J. and Brenner, A. C. 2001. The role of satellite radar altimetry in the study of ice sheet dynamics and mass balance. In Fu, L.-L., ed. Satellite altimetry and earth sciences. NewYork, Academic Press Inc., 351–369. (International Geophysical Series 69.)
Zwally, H. J. and Giovinetto, M. B. 2000. Spatial distribution of net surface mass balance on Greenland. Ann. Glaciol., 31, 126–132.
Zwally, H. J. and Li, Jun. 2002. Seasonal and interannual variations of firn densification and ice-sheet surface elevation at Greenland summit. J. Glaciol., 48(161), 199–207.
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Annals of Glaciology
  • ISSN: 0260-3055
  • EISSN: 1727-5644
  • URL: /core/journals/annals-of-glaciology
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