Sea-ice induced Southern Ocean subsurface warming and surface cooling in a warming climate: ROMS model data

• Main Authors: Haumann, F. Alexander, Gruber, Nicolas, Münnich, Matthias
• Format: Dataset
• Language: English
• Published: 2020
• Subjects: Southern Ocean; polar; high latitude; Antarctica; climate change; ice shelf; modelling; ROMS; perturbation; factorial experiments; sea ice; wind; glacial meltwater; cooling; freshening; salinity; warming; heat content; stratification; Antarc*; Ice Shelf; Sea ice
• Online Access: https://zenodo.org/record/3709154; https://doi.org/10.5281/zenodo.3709154

Abstract: This data set contains model output data from the regional ocean modelling system (ROMS) that was set up for the Southern Ocean (south of 24 °S; Haumann, 2016) to analyze the effects of changing surface freshwater and momentum fluxes on Southern Ocean water-mass changes over the period 1980 to 2011. All data is provided in NetCDF format. The data set contains 3 sets 40-year long model spin-up, control, and 3 perturbation simulations each. The sets differ by their model mean state to assess the effect of surface salinity biases on the results. One set of simulations are reference simulations where salinity is restored to the observed surface salinity during model spin-up, and the other two sets are simulations in which the restoring surface salinity has been altered by plus and minus 0.1 PSU, respectively. The control and perturbation simulations are 40-year extensions of the respective model spin-up simulations. In the perturbation simulations either the surface freshwater fluxes or momentum fluxes are instantaneously perturbed after the spin-up simulation to reflect the observation-derived changes in these surface fluxes and then held constant (at the perturbed level) for 40 years. They consist of sea-ice freshwater flux, glacial meltwater flux, and atmosphere-ocean momentum flux changes. Details on the model setup, forcing, and simulations can be obtained from the related research article by Haumann et al. (2020; https://doi.org/10.1029/2019AV000132). Contacts: F. Alexander Haumann, orcid:0000-0002-8218-977X. Email: [e-mail] License: When using this data users must cite the original research article by Haumann et al. (2020) published in AGU Advances (https://doi.org/10.1029/2019AV000132). This model output data set is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/ Citations: Haumann, F. A., Gruber, N., Münnich, M. (2020): Sea-ice Induced Southern Ocean ...