14 Jul 2020
14 Jul 2020
Multidecadal Polynya Formation in a Conceptual (Box) Model
- 1Institute for Marine and Atmospheric research Utrecht, Department of Physics, Utrecht University, Utrecht, the Netherlands
- 2Center for Complex Systems Studies, Utrecht University, Utrecht, the Netherlands
- 1Institute for Marine and Atmospheric research Utrecht, Department of Physics, Utrecht University, Utrecht, the Netherlands
- 2Center for Complex Systems Studies, Utrecht University, Utrecht, the Netherlands
Abstract. Maud Rise Polynyas (MRPs) form due to deep convection, which is caused by static instability of the water column. Recent studies with the Community Earth System Model (CESM) have indicated that a multidecadal varying heat accumulation in the subsurface layer occurs prior to MRP formation due to the heat transport over the Weddell gyre. In this study, a conceptual MRP box model, forced with CESM data, is used to investigate the role of this subsurface heat accumulation in MRP formation. Cases excluding and including multidecadal varying subsurface heat and salt fluxes are considered and multiple polynya events are only simulated in the cases where subsurface fluxes are included. The dominant frequency for MRP events in these results, approximately the frequency of the subsurface heat and salt accumulation, is still visible in cases where white noise is added to the freshwater flux. This indicates the importance and dominance of the subsurface heat accumulation in MRP formation.
Daan Boot et al.


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RC1: 'Review of Multidecadal Polynya Formation in a Conceptual (Box) Model by Boot at al.', David Bailey, 11 Aug 2020
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AC1: 'Point-by-point reply to reviewer 1', Daan Boot, 22 Sep 2020
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AC1: 'Point-by-point reply to reviewer 1', Daan Boot, 22 Sep 2020
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RC2: 'Review of: “Multidecadal Polynya Formation in a Conceptual (Box) Model”, by Boot, van Westen, and Dijkstra.', Wilbert Weijer, 17 Aug 2020
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AC2: 'Point-by-point reply to reviewer 2', Daan Boot, 22 Sep 2020
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AC2: 'Point-by-point reply to reviewer 2', Daan Boot, 22 Sep 2020
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EC1: 'Editor comments', Andrew Moore, 22 Sep 2020


-
RC1: 'Review of Multidecadal Polynya Formation in a Conceptual (Box) Model by Boot at al.', David Bailey, 11 Aug 2020
-
AC1: 'Point-by-point reply to reviewer 1', Daan Boot, 22 Sep 2020
-
AC1: 'Point-by-point reply to reviewer 1', Daan Boot, 22 Sep 2020
-
RC2: 'Review of: “Multidecadal Polynya Formation in a Conceptual (Box) Model”, by Boot, van Westen, and Dijkstra.', Wilbert Weijer, 17 Aug 2020
-
AC2: 'Point-by-point reply to reviewer 2', Daan Boot, 22 Sep 2020
-
AC2: 'Point-by-point reply to reviewer 2', Daan Boot, 22 Sep 2020
-
EC1: 'Editor comments', Andrew Moore, 22 Sep 2020
Daan Boot et al.
Data sets
MRP_Conceptual_Box_Model Daan Boot https://doi.org/10.5281/zenodo.3941689
Model code and software
MRP_Conceptual_Box_Model Daan Boot https://doi.org/10.5281/zenodo.3941689
Daan Boot et al.
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