Articles | Volume 20, issue 8
https://doi.org/10.5194/tc-20-4563-2026
https://doi.org/10.5194/tc-20-4563-2026
Research article
 | 
20 Aug 2026
Research article |  | 20 Aug 2026

The multilayer ocean circulation melting the 79N Glacier ice tongue

Markus Reinert, Claudia Wekerle, Knut Klingbeil, Marvin Lorenz, and Hans Burchard

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The system of atmosphere, land, ice and ocean in the region near the 79N Glacier in northeast Greenland: synthesis and key findings from the Greenland Ice Sheet–Ocean Interaction (GROCE) experiment
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Cited articles

Alley, K. E., Scambos, T. A., Siegfried, M. R., and Fricker, H. A.: Impacts of Warm Water on Antarctic Ice Shelf Stability through Basal Channel Formation, Nat. Geosci., 9, https://doi.org/10.1038/ngeo2675, 2016. a, b
Arneborg, L., Fiekas, V., Umlauf, L., and Burchard, H.: Gravity Current Dynamics and Entrainment – A Process Study Based on Observations in the Arkona Basin, J. Phys. Oceanogr., 37, https://doi.org/10.1175/JPO3110.1, 2007. a
Böning, C. W., Behrens, E., Biastoch, A., Getzlaff, K., and Bamber, J. L.: Emerging impact of Greenland meltwater on deepwater formation in the North Atlantic Ocean, Nat. Geosci., 9, 523–527, 2016. a
Brown, K. A., Holding, J. M., and Carmack, E. C.: Understanding Regional and Seasonal Variability Is Key to Gaining a Pan-Arctic Perspective on Arctic Ocean Freshening, Front. Mar. Sci., 7, https://doi.org/10.3389/fmars.2020.00606, 2020. a
Burchard, H. and Beckers, J.-M.: Non-Uniform Adaptive Vertical Grids in One-Dimensional Numerical Ocean Models, Ocean Model., 6, https://doi.org/10.1016/S1463-5003(02)00060-4, 2004. a, b, c
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Short summary
The Greenland Ice Sheet is an important contributor to global sea level rise. In northern Greenland, floating glacier tongues are primarily melted by ocean currents. These processes are difficult to observe, so we developed a realistic numerical model to study ocean-driven melting at Greenland's largest floating ice tongue, the 79° North Glacier. Our simulation reveals the details of the oceanic currents bringing warm water toward the ice base, melting and shaping the glacier tongue from below.
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