Updates to the NEMO iceberg dynamics and grounding

Model code and input files for the simulations in Kostov et al. (2025) including code developed by Yavor Kostov to improve the iceberg dynamics and grounding capability in NEMO.

The updates are described in

Modelled dynamics of floating and grounded icebergs, with application to the Amundsen Sea

Yavor Kostov, Paul R. Holland, Kelly A. Hogan, James A. Smith, Andrew H. Fleming, Nicolas C. Jourdain, Pierre Mathiot, Anna Olivé Abelló, Andrew J. S. Meijers.

The customizations of the model code are compatible with NEMO 4.2 Kostov updated the pressure gradient force, the ocean drag, sediment resistance, gravity and Coulomb friction along the solid basement, and introduced iceberg substepping.

The boundary conditions in all experiments are based on the JRA55-do atmospheric reanalysis (Tsujino et al., 2018), https://doi.org/10.1016/j.ocemod.2018.07.002.

This research was supported by Ocean Cryosphere Exchanges in ANtarctica: Impacts on Climate and the Earth system, OCEAN ICE, which is funded by the European Union, Horizon Europe Funding Programme for research and innovation under grant agreement Nr. 101060452, 10.3030/101060452. (http://dx.doi.org/10.13039/501100007601) This work was funded by UK Research and Innovation (UKRI) under the UK government’s Horizon Europe funding Guarantee 10048443. A. Olivé Abello, N. Jourdain and P. Mathiot received funding from Agence Nationale de la Recherche - France 2030 as part of the PEPR TRACCS programme under grant numbers ANR-22-EXTR-0008 (IMPRESSION-ESM) and ANR-22-EXTR-0010 (ISClim).