Full text: Technical Commission VIII (B8)

Though the sea ice cover around Antarctica is primarily 
seasonal, no conclusion can be made from this study that a 
similar trend as revealed is occurring with regards to sea ice 
thickness. Imperative is the development of an improved way of 
assessing the Antarctic sea ice cover with regards to its 
thickness. The European Space Agency’s CryoSat-2 may offer 
this development, as the interpretation of its waveform may 
shed light on snow depth. This is crucial to fully assess the 
thickness of seasonal Antarctic se ice. 
This study is a basis to derive sea ice thickness maps in this 
specific region which requires information of snow on top of 
the sea ice. 
Arrigo, KR, van Dijken, GL, Ainley, DG, Fahnestock, MA & 
Markus, T 2002, 'Ecological impact of a large 
Antarctic iceberg', Geophys. Res. Lett., vol. 29, no. 7, 
p. 1104. 
Comiso, J 2010, Polar Oceans From Space, Springer, New 
Comiso, JC, Kwok, R, Martin, S & Gordon, AL 2011, 
'Variability and trends in sea ice extent and ice 
producution in the Ross Sea', Journal of Geophysical 
Research, vol. 116, C04021, 19 PP., 2011. 
Dempsey, DE, Langhorne, PJ, Robinson, NJ, Williams, MJM, 
Haskell, TG & Frew, RD 2010, 'Observation and 
modeling of platelet ice fabric in McMurdo Sound, 
Antarctica', J. Geophys. Res., vol. 115, C01007. 
Leonard, GH, Purdie, CR, Langhorne, PJ, Haskell, TG, 
Williams, MJM & Frew, RD 2006, 'Observations of 
platelet ice growth and oceanographic conditions 
during the winter of 2003 in McMurdo Sound, 
Antarctica’, J. Geophys. Res., vol. 111, no. C4, pp. 1- 
Markus, T, Massom, R, Worby, A, Lytle, V, Kurtz, N & 
Maksym, T 2011, 'Freeboard, snow depth and sea-ice 
roughness in East Antarctica from in situ and multiple 
satellite data', Annals of Glaciology, vol. 52. 
Purdie, CR, Langhorne, PJ, Leonard, GH & Haskell, TG 2006, 
'Growth of first-year landfast Antarctic sea ice 
determined from winter temperature measurements’, 
Annals of Glaciology, vol. 44, pp. 170-6. 
Worby, A, Steer, A, Lieser, JL, Heil, P, Yi, D, Markus, T, 
Allison, I, Massom, R, Galin, N & Zwally, HJ 2011, 
'Regional-scale sea-ice and snow thickness 
distributions from in situ and satellite measurements 
over East Antartica during SIPEX 2007', Deep-Sea 
Research II, vol. 58, pp. 1125-36. 
Xie, H, Ackley, SF, Yi, D, Zwally, HJ, Wagner, P, Weissling, 
B, Lewis, M & Ye, K 2011, 'Sea-ice thickness 
distribution of the Bellingshausen Sea from surface 
measurements and ICESat altimetry, Deep-Sea 
Research II, vol. 58, pp. 1039-51. 
Yi, D, Zwally, HJ & Robbins, JW 2011, 'ICESat observations 
of seasonal and interannual variations of sea-ice 
freeboard and estimated thickness in the Weddell Sea, 
Antarctica (2003-2009)', Annals of Glaciology, vol. 
52, no. 57, pp. 43-51. 
Zwaly, HJ, Yi, D, Kwok, R & Zhao, Y 2008, 'ICESat 
measurements of sea ice freeboard and estimates of 
sea ice thickness in the Weddell Sea', J. Geophys. 
Res., vol. 113, no. C2, p. C02S15. 
ICESat data is provided by the National Snow & Ice Data 
Centre, Boulder, Colorado. Gratitude is given to participants in 
the 2009 HL field work measurements. The field work was 
supported by Antarctica New Zealand in event K053 and K063.

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