The Cryosphere
The Cryosphere
TC
Articles | Volume 16, issue 6
Articles | Volume 16, issue 6
https://doi.org/10.5194/tc-16-2629-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-16-2629-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 6
Research article
 | 
01 Jul 2022
Research article |  | 01 Jul 2022

Empirical correction of systematic orthorectification error in Sentinel-2 velocity fields for Greenlandic outlet glaciers

Thomas R. Chudley, Ian M. Howat, Bidhyananda Yadav, and Myoung-Jong Noh

Supplement

https://doi.org/10.5194/tc-16-2629-2022-supplement

Data sets

MEaSUREs Greenland 6 and 12 day Ice Sheet Velocity Mosaics from SAR I. Joughin https://doi.org/10.5067/6JKYGMOZQFYJ

MEaSUREs Greenland Ice Mapping Project (GIMP) Digital Elevation Model from GeoEye and WorldView Imagery I. Howat, A. Negrete, and B. Smith https://doi.org/10.5067/H0KUYVF53Q8M

MEaSUREs ITS_LIVE Landsat Image-Pair Glacier and Ice Sheet Surface Velocities A. S. Gardner, M. A. Fahnestock, and T. A. Scambos https://doi.org/10.5067/IMR9D3PEI28U

MEaSURES Greenland Ice Velocity: Selected Glacier Site Velocity Maps from Optical Imagery I. Howat https://doi.org/10.5067/RRFY5IW94X5W

Data supporting "Empirical correction of systematic orthorectification error in Sentinel-2 velocity fields for Greenlandic outlet glaciers" T. R. Chudley, I. M. Howat, B. N. Yadav, and M. J. Noh https://doi.org/10.5281/zenodo.6676196

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Short summary
Sentinel-2 images are subject to distortion due to orthorectification error, which makes it difficult to extract reliable glacier velocity fields from images from different orbits. Here, we use a complete record of velocity fields at four Greenlandic outlet glaciers to empirically estimate the systematic error, allowing us to correct cross-track glacier velocity fields to a comparable accuracy to other medium-resolution satellite datasets.
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