Sea ice thickness distribution (ITD) Model for the Arctic, links to NetCDF files ...

• Main Authors: Ungermann, Mischa, Tremblay, L Bruno, Martin, Torge, Losch, Martin
• Format: Dataset
• Language: English
• Published: PANGAEA 2017
• Subjects: File content; File name; File format; File size; Uniform resource locator/link to file; Arctic Ocean; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.865445; https://doi.pangaea.de/10.1594/PANGAEA.865445

The impact of a subgrid-scale ice thickness distribution (ITD) and two standard ice strength formulations on simulated Arctic sea ice climate is investigated. To this end different model configurations with and without an ITD were tuned by minimizing the weighted mean error between the simulated and observed sea ice concentration, thickness and drift speed with an semi-automatic parameter optimization routine. The standard ITD and ice strength parameterization lead to larger errors when compared to the simple single-category model with an ice strength parameterization based on the mean ice thickness. Interestingly, the simpler ice strength formulation, which depends linearly on the mean ice thickness, also reduces the model-observation error when using an ITD. For the ice strength parameterization that makes use of the ITD, the effective ice strength depends strongly on the number of thickness categories, so that introducing more categories can lead to overall thicker ice that is more easily deformed. ... : Monthly mean values for sea ice thickness, concentration, drift and ice strength from model simulations. The model area covers the Arctic Ocean; thickness, concentration and drift are given from 1979 to 2009, ice strength is given from 1999 to 2011. The different model configurations are as described in the article. ...