Earth System Science Data
Earth System Science Data
Earth System Science Data
Articles | Volume 18, issue 1
Articles | Volume 18, issue 1
https://doi.org/10.5194/essd-18-721-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-721-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 1
Data description article
 | 
30 Jan 2026
Data description article |  | 30 Jan 2026

A climate data record of sea ice age using Lagrangian advection of a triangular mesh

Anton Korosov, Léo Edel, Heather Regan, Thomas Lavergne, Signe Aaboe, and Emily Jane Down

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Latest update: 28 Aug 2026
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Short summary
We present a new long-term record of Arctic sea ice age spanning from 1991 to 2024. Using satellite data and a new tracking method, it maps fractions of sea ice from first- to sixth-year and includes uncertainty estimates. The dataset shows a decline in older ice and more first-year ice, it agrees well with buoy data, and supports Arctic monitoring, climate research, navigation, and model evaluation.
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