23 Nov 2022
 | 23 Nov 2022

Conservation of heat and mass in P-SKRIPS version 1: the coupled atmosphere-ice-ocean model of The Ross Sea

Alena Malyarenko, Alexandra Gossart, Rui Sun, and Mario Krapp

Abstract. Ocean-atmosphere-sea ice interactions are key to understanding the future of the Southern Ocean and the Antarctic continent. Regional coupled climate-sea ice-ocean models have been developed for several polar regions, however the conservation of heat and mass fluxes between coupled models is often overlooked due to computational difficulties. At regional scale, the non-conservation of water and energy can lead to model drift over multi-year model simulations. Here we present P-SKRIPS version 1, a new version of the SKRIPS coupled model set up for the Ross Sea region. Our development includes a full conservation of heat and mass fluxes transferred between the climate (PWRF) and sea ice-ocean (MITgcm) models. We examine open water, sea ice cover, and ice sheet interfaces. We show the evidence of the flux conservation in the results of a one month-long summer and one month-long winter test experiments. P-SKRIPS shows the advantages of conserving heat flux over the Terra Nova Bay and Ross Sea polynyas in August 2016, eliminating the mismatch between total flux calculation in PWRF and MITgcm up to 922 W m-2.

Alena Malyarenko et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • CEC1: 'Comment on egusphere-2022-1135', Juan Antonio Añel, 12 Dec 2022
    • AC1: 'Reply on CEC1', Alena Malyarenko, 17 Dec 2022
      • CEC2: 'Reply on AC1', Juan Antonio Añel, 17 Dec 2022
        • AC2: 'Reply on CEC2', Alena Malyarenko, 20 Mar 2023
          • EC1: 'Reply on AC2', Christopher Horvat, 20 Mar 2023
  • RC1: 'Comment on egusphere-2022-1135', Anonymous Referee #1, 23 Jan 2023
    • AC3: 'Reply on RC1', Alena Malyarenko, 20 Mar 2023
  • RC2: 'Comment on egusphere-2022-1135', Anonymous Referee #2, 30 Jan 2023
    • AC4: 'Reply on RC2', Alena Malyarenko, 20 Mar 2023

Alena Malyarenko et al.

Model code and software

P-SKRIPS A. Malyarenko, A. Gossart

Alena Malyarenko et al.


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Short summary
Simultaneous modelling of ocean, sea ice and atmosphere in coupled models is critical for understanding all of the processes that happen in the Antarctic. Here we have developed a coupled model for the Ross Sea, P-SKRIPS, that conserves heat and mass between the ocean and sea ice model (MITgcm) and the atmosphere model (PWRF). We have shown that our developments reduce the model drift, which is important for long-term simulations. P-SKRIPS shows good results in modelling coastal polynyas.