The Cryosphere
The Cryosphere
TC
Articles | Volume 17, issue 6
Articles | Volume 17, issue 6
https://doi.org/10.5194/tc-17-2509-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-17-2509-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 6
Research article
 | 
27 Jun 2023
Research article |  | 27 Jun 2023

The effects of assimilating a sub-grid-scale sea ice thickness distribution in a new Arctic sea ice data assimilation system

Nicholas Williams, Nicholas Byrne, Daniel Feltham, Peter Jan Van Leeuwen, Ross Bannister, David Schroeder, Andrew Ridout, and Lars Nerger

Model code and software

CICE v5.1.2 Elizabeth Hunke, David Bailey, Adrian Turner, William Lipscomb, Alice DuVivier, Nicole Jeffery, and Daniela Flocco https://github.com/CICE-Consortium/CICE-svn-trunk/tree/cice-5.1.2

PDAF v2.0 Lars Nerger https://pdaf.awi.de/trac/wiki

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Short summary
Observations show that the Arctic sea ice cover has reduced over the last 40 years. This study uses ensemble-based data assimilation in a stand-alone sea ice model to investigate the impacts of assimilating three different kinds of sea ice observation, including the novel assimilation of sea ice thickness distribution. We show that assimilating ice thickness distribution has a positive impact on thickness and volume estimates within the ice pack, especially for very thick ice.
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