Articles | Volume 15, issue 10
https://doi.org/10.5194/tc-15-4999-2021
https://doi.org/10.5194/tc-15-4999-2021
Brief communication
 | 
29 Oct 2021
Brief communication |  | 29 Oct 2021

Brief communication: The anomalous winter 2019 sea-ice conditions in McMurdo Sound, Antarctica

Greg H. Leonard, Kate E. Turner, Maren E. Richter, Maddy S. Whittaker, and Inga J. Smith

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Manuscript not accepted for further review
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Cited articles

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Brett, G. M., Irvin, A., Rack, W., Haas, C., Langhorne, P. J., and Leonard, G. H.: Variability in the Distribution of Fast Ice and the Sub-ice Platelet Layer Near McMurdo Ice Shelf, J. Geophys. Res.-Oceans, 125, e2019JC015678, https://doi.org/10.1029/2019JC015678, 2020. a, b
Brunt, K. M., Sergienko, O., and MacAyeal, D. R.: Observations of unusual fast-ice conditions in the southwest Ross Sea, Antarctica: preliminary analysis of iceberg and storminess effects, Ann. Glaciol., 44, 183–187, https://doi.org/10.3189/172756406781811754, 2006. a, b, c, d, e, f, g
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Short summary
McMurdo Sound sea ice can generally be partitioned into two regimes: a stable fast-ice cover forming south of approximately 77.6° S and a more dynamic region north of 77.6° S that is regularly impacted by polynyas. In 2019, a stable fast-ice cover formed unusually late due to repeated break-out events. This subsequently affected sea-ice operations in the 2019/20 field season. We analysed the 2019 sea-ice conditions and found a strong correlation with unusually large southerly wind events.
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