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Brief communication: Arctic sea ice thickness internal variability and its changes under historical and anthropogenic forcing
Van Achter, G.; Ponsoni, L.; Massonnet, F.; Fichefet, T.; Legat, V. (2020). Brief communication: Arctic sea ice thickness internal variability and its changes under historical and anthropogenic forcing. Cryosphere 14(10): 3479-3486. https://dx.doi.org/10.5194/tc-14-3479-2020
In: The Cryosphere. Copernicus: Göttingen. ISSN 1994-0416; e-ISSN 1994-0424, meer
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  • Van Achter, G., meer
  • Ponsoni, L., meer
  • Massonnet, F., meer

Abstract
    We use model simulations from the CESM1-CAM5-BGC-LE dataset to characterise the Arctic sea ice thickness internal variability both spatially and temporally. These properties, and their stationarity, are investigated in three different contexts: (1) constant pre-industrial, (2) historical and (3) projected conditions. Spatial modes of variability show highly stationary patterns regardless of the forcing and mean state. A temporal analysis reveals two peaks of significant variability, and despite a non-stationarity on short timescales, they remain more or less stable until the first half of the 21st century, where they start to change once summer ice-free events occur, after 2050.

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