Preprints
https://doi.org/10.5194/egusphere-2023-1560
https://doi.org/10.5194/egusphere-2023-1560
26 Jul 2023
 | 26 Jul 2023

Brief Communication: On the mid-summer melt pond fraction–September Arctic sea ice extent relationship in the EC-Earth3 climate model

Mukesh Gupta, Leandro Ponsoni, Jean Sterlin, François Massonnet, and Thierry Fichefet

Abstract. In a recent study, the springtime melt pond fraction has been suggested to be a predictor of subsequent September Arctic sea ice minimum extent anomalies. However, another study based on satellite data did not provide evidence for such a relationship. We explore this association in EC-Earth3, which includes an explicit treatment of melt ponds, for the present-day climate. We find a statistically significant inverse relationship between September sea ice extent and mid-summer (June–July) melt pond fraction on the seasonal scale. Our results support the satellite-based inferences that the mid-summer melt pond fraction highly correlates with the September ice extent.

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Mukesh Gupta, Leandro Ponsoni, Jean Sterlin, François Massonnet, and Thierry Fichefet

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-1560', Anonymous Referee #1, 24 Aug 2023
  • RC2: 'Comment on egusphere-2023-1560', Anonymous Referee #2, 04 Sep 2023

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2023-1560', Anonymous Referee #1, 24 Aug 2023
  • RC2: 'Comment on egusphere-2023-1560', Anonymous Referee #2, 04 Sep 2023
Mukesh Gupta, Leandro Ponsoni, Jean Sterlin, François Massonnet, and Thierry Fichefet
Mukesh Gupta, Leandro Ponsoni, Jean Sterlin, François Massonnet, and Thierry Fichefet

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Short summary
We explored the relationship of Arctic September minimum sea ice extent with mid-summer melt pond area fraction, under the present-day climate. We confirm through the advanced numerical modelling, with an explicit melt pond scheme in the global climate model, EC-EARTH3, that melt pond fraction in mid-summer (June–July, not May) shows a strong relationship with the Arctic September sea ice extent. Satellite-based inferences validated our findings of this association.