Description of algorithm Full domain   Ice concntr, edge pos   Contingency tables American sector European sector Asian sector

Validation of sea ice edge, concentration - Full domain

Bulletin date: 2025-04-10

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. AMSR sea ice concentration

Sea ice concentration

Difference metrics	Bias (model-obs.)

Sea ice edge length, displacement

Sea ice edge length

Ice edge displacement metrics

Supplementary metrics

Relative distance metrics [IE/IIEE]	Integrated ice edge error (IIEE)

Ice Edge Maps

IIEE regions	Ice edges
Best estimate vs. observations, 2025-04-09
	Observations in blue, model best estimate in black
Forecast vs. observations, 2025-04-16
	Observations in blue, persistence in brown, model best estimate in black, model forecast in grey
Persistence forecast, 2025-04-16

Fractions skill score

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