Articles | Volume 15, issue 11
The Cryosphere, 15, 5115–5132, 2021
https://doi.org/10.5194/tc-15-5115-2021
The Cryosphere, 15, 5115–5132, 2021
https://doi.org/10.5194/tc-15-5115-2021
Research article
12 Nov 2021
Research article | 12 Nov 2021

Supraglacial lake bathymetry automatically derived from ICESat-2 constraining lake depth estimates from multi-source satellite imagery

Rajashree Tri Datta and Bert Wouters

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Cited articles

Albright, A. and Glennie, C.: Nearshore Bathymetry From Fusion of Sentinel-2 and ICESat-2 Observations, IEEE Geosci. Remote Sens. Lett., 18, 900–904, https://doi.org/10.1109/LGRS.2020.2987778, 2020. 
Arthur, J. F., Stokes, C. R., Jamieson, S. S. R., Carr, J. R., and Leeson, A. A.: Distribution and seasonal evolution of supraglacial lakes on Shackleton Ice Shelf, East Antarctica, The Cryosphere, 14, 4103–4120, https://doi.org/10.5194/tc-14-4103-2020, 2020. 
Banwell, A. F., Caballero, M, Arnold, N., Blasser, N., Mac Cathles, L., and MacAyeal, D.: Supraglacial lakes on the Larsen B ice shelf, Antarctica, and at Paakitsoq, West Greenland: a comparative study, Ann. Glaciol., 55, 1–8, https://doi.org/10.3189/2014AoG66A049, 2014. 
Bell, R. E., Banwell, A. F., Trusel, L. D., and Kingslake, J.: Antarctic surface hydrology and impacts on ice-sheet mass balance, Nat. Clim. Change, 8, 1044–1052, https://doi.org/10.1038/s41558-018-0326-3, 2018. 
Besl, P. J. and McKay, N. D.: A method for registration of 3-D shapes, IEEE T. Pattern Anal. Mach. Intel., 14, 239–256, https://doi.org/10.1109/34.121791, 1992. 
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Short summary
The ICESat-2 laser altimeter can detect the surface and bottom of a supraglacial lake. We introduce the Watta algorithm, automatically calculating lake surface, corrected bottom, and (sub-)surface ice at high resolution adapting to signal strength. ICESat-2 depths constrain full lake depths of 46 lakes over Jakobshavn glacier using multiple sources of imagery, including very high-resolution Planet imagery, used for the first time to extract supraglacial lake depths empirically using ICESat-2.