Articles | Volume 17, issue 9
Research article
27 Sep 2023
Research article |  | 27 Sep 2023

Comparing elevation and backscatter retrievals from CryoSat-2 and ICESat-2 over Arctic summer sea ice

Geoffrey J. Dawson and Jack C. Landy

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Cited articles

Andersen, O. B., Knudsen, P., and Stenseng, L.: The DTU13 MSS (Mean Sea Surface) and MDT (Mean Dynamic Topography) from 20 Years of Satellite Altimetry, in: International Association of Geodesy Symposia, edited by: Jin, S. and Barzaghi, R., Springer, 1–10,, 2015. 
AVISO+: Satellite Altimetry Data, AVISO+ [data set],, last access: January 2022. 
Babb, D., Landy, J., Barber, D., and Galley, R.: Winter sea ice export from the Beaufort Sea as a preconditioning mechanism for enhanced summer melt: A case study of 2016, J. Geophys. Res., 124, 6575–6600,, 2019. 
Bagnardi, M., Kurtz, N. T., Petty, A. A., and Kwok, R.: Sea surface height anomalies of the Arctic Ocean from ICESat-2: A first examination and comparisons with CryoSat-2, Geophys. Res. Lett., 48, e2021GL093155,, 2021. 
Blockley, E. W. and Peterson, K. A.: Improving Met Office seasonal predictions of Arctic sea ice using assimilation of CryoSat-2 thickness, The Cryosphere, 12, 3419–3438,, 2018. 
Short summary
In this study, we compared measurements from CryoSat-2 and ICESat-2 over Arctic summer sea ice to understand any possible biases between the two satellites. We found that there is a difference when we measure elevation over summer sea ice using CryoSat-2 and ICESat-2, and this is likely due to surface melt ponds. The differences we found were in good agreement with theoretical predictions, and this work will be valuable for summer sea ice thickness measurements from both altimeters.