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  • David Docquier
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  • High resolution

Last edited by David Docquier Oct 02, 2020
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High resolution

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Go to SST restoring experiments at standard resolution.

Go to Atlantic and Pacific SST experiments at standard resolution.

The effect of horizontal resolution on the OHT - sea ice relationships is investigated by performing a similar set of sensitivity experiments with SST restoring as EC-Earth-SR (T255-ORCA1, see SST restoring experiments) with EC-Earth-HR (T511-ORCA025). Below are plots of March/September Arctic sea-ice area (Fig. 1) and volume (Fig. 2) for the historical Hh01 run (solid blue, run by Tim Kruschke), my control run (dashed blue) departing from the Hh01 run in 2014 using a 2000-year constant forcing, and a sensitivity experiment (dashed green) in which the SST in the North Atlantic is increased by 3K compared to the control run (ATL1+3K). For reference, the historical, control and sensitivity runs at standard resolution (T255-ORCA1) are also shown as solid red, dashed red and dashed gray curves, respectively, and the observations/reanalysis are in dashed black. The orders of magnitude of changes in sea-ice area and volume are similar at standard and high resolution.

SIA_Arctic_HR Fig. 1: Time series of Arctic sea-ice area in March (A) and September (B)

SIV_Arctic_HR Fig. 2: Time series of Arctic sea-ice volume in March (A) and September (B)

Important note: These figures were produced by D. Docquier and constitute preliminary results (not published in papers).

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