The Cryosphere
The Cryosphere
TC
Articles | Volume 18, issue 5
Articles | Volume 18, issue 5
https://doi.org/10.5194/tc-18-2357-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-18-2357-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 5
Research article
 | 
13 May 2024
Research article |  | 13 May 2024

The role of upper-ocean heat content in the regional variability of Arctic sea ice at sub-seasonal timescales

Elena Bianco, Doroteaciro Iovino, Simona Masina, Stefano Materia, and Paolo Ruggieri

Data sets

ERA5 monthly averaged data on single levels from 1940 to present H. Hersbach et al. https://doi.org/10.24381/cds.f17050d7

The CMCC Eddy-permitting Global Ocean Physical Reanalysis (C-GLORS v5, 1980-2014), links to NetCDF files Andrea Storto and Simona Masina https://doi.org/10.1594/PANGAEA.857995

ORAS5 global ocean reanalysis monthly data from 1958 to present Copernicus Climate Change Service, Climate Data Store https://doi.org/10.24381/cds.67e8eeb7

Global Ocean Ensemble Physics Reanalysis Copernicus Marine Service https://doi.org/10.48670/moi-00024

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Short summary
Changes in ocean heat transport and surface heat fluxes in recent decades have altered the Arctic Ocean heat budget and caused warming of the upper ocean. Using two eddy-permitting ocean reanalyses, we show that this has important implications for sea ice variability. In the Arctic regional seas, upper-ocean heat content acts as an important precursor for sea ice anomalies on sub-seasonal timescales, and this link has strengthened since the 2000s.
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