Articles | Volume 15, issue 9
The Cryosphere, 15, 4165–4178, 2021
https://doi.org/10.5194/tc-15-4165-2021

Special issue: The Weddell Sea and the ocean off Dronning Maud Land: unique...

The Cryosphere, 15, 4165–4178, 2021
https://doi.org/10.5194/tc-15-4165-2021
Research article
31 Aug 2021
Research article | 31 Aug 2021

Recent observations of superimposed ice and snow ice on sea ice in the northwestern Weddell Sea

Stefanie Arndt et al.

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Cited articles

Ackley, S., Lewis, M., Fritsen, C., and Xie, H.: Internal melting in Antarctic sea ice: Development of “gap layers”, Geophys. Res. Lett., 35, https://doi.org/10.1029/2008GL033644, 2008. 
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Arndt, S.: Snow stratigraphy measurements at ice stations during POLARSTERN cruise PS118, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.929010, 2021. 
Arndt, S. and Haas, C.: Spatiotemporal variability and decadal trends of snowmelt processes on Antarctic sea ice observed by satellite scatterometers, The Cryosphere, 13, 1943–1958, https://doi.org/10.5194/tc-13-1943-2019, 2019. 
Arndt, S. and Haas, C.: Snow thickness measurements at ice stations during POLARSTERN cruise PS118, PANGAEA [data set], https://doi.org/10.1594/PANGAEA.928966, 2021. 
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Short summary
We present here snow and ice core data from the northwestern Weddell Sea in late austral summer 2019, which allow insights into possible reasons for the recent low summer sea ice extent in the Weddell Sea. We suggest that the fraction of superimposed ice and snow ice can be used here as a sensitive indicator. However, snow and ice properties were not exceptional, suggesting that the summer surface energy balance and related seasonal transition of snow properties have changed little in the past.