The Cryosphere
The Cryosphere
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Articles | Volume 19, issue 3
Articles | Volume 19, issue 3
https://doi.org/10.5194/tc-19-1391-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-19-1391-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 3
Research article
 | 
28 Mar 2025
Research article |  | 28 Mar 2025

National Weather Service Alaska Sea Ice Program: gridded ice concentration maps for the Alaskan Arctic

Astrid Pacini, Michael Steele, and Mary-Beth Schreck

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Short summary
While sea ice concentration data are critically important for climate research, obtaining high-resolution data remains a challenge. Here we present and validate the US National Weather Service Alaska Sea Ice Program (ASIP) ice maps. These maps are shown to be highly accurate when compared to in situ observations and to outperform a passive-microwave-based product, especially at low concentrations. Therefore, ASIP data provide an exciting new tool to study ice conditions in the Pacific Arctic.
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