Brief communication: Arctic sea ice thickness internal variability and its changes under historical and anthropogenic forcing

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) pro...

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Bibliographic Details
Published in:The Cryosphere
Main Authors: Van Achter, Guillian, Ponsoni, Leandro, Massonnet, François, Fichefet, Thierry, Legat, Vincent
Other Authors: UCL - SST/ELI/ELIC - Earth & Climate, UCL - SST/IMMC/MEMA - Applied mechanics and mathematics
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus GmbH 2020
Subjects:
Earth-Surface Processes
Water Science and Technology
Arctic
Sea ice
The Cryosphere
Online Access:http://hdl.handle.net/2078.1/240441
https://doi.org/10.5194/tc-14-3479-2020
Description
Summary: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 summerice-free events occur, after 2050.

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