Earth Observation
Earth Observation
EO
Articles | Volume 1, issue 1
Articles | Volume 1, issue 1
https://doi.org/10.5194/eo-1-129-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/eo-1-129-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 1, issue 1
Research article
 | 
30 Sep 2026
Research article |  | 30 Sep 2026

Pan-Antarctic evaluation of National Snow and Ice Data Center (NSIDC) sea ice drift product using high-resolution SAR and buoy data

Younghyun Koo, Walter N. Meier, and J. Scott Stewart

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Short summary
Passive microwave (PMW) satellite data have been widely used to monitor Antarctic sea ice velocity (SIV) on a pan-Antarctic scale. We present a comprehensive evaluation of a PMW-derived Antarctic SIV by leveraging high-resolution SIV fields derived from synthetic aperture radar imagery. We found a widespread ~ 1 km d−1 underestimation of ice drift speed across the Southern Ocean, caused by optimal interpolation.
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