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

Validation of sea ice concentration - GODAE regions

Bulletin date: 2023-03-02

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-03-06

Best estimate

Forecast

Arctic Deep Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 127 7 48 2 0 0 0
OW 0 19 3 29 14 0 0 0
VODI 0 18 2 29 35 0 0 0
ODI 0 12 2 8 39 4 0 0
CDI 0 10 2 20 58 16 0 0
VCDI 0 15 4 45 129 802 5657 29746
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 124 7 25 1 0 0 0
OW 0 15 5 33 3 0 0 0
VODI 0 14 0 34 21 0 0 0
ODI 0 10 0 11 30 0 0 0
CDI 0 19 1 7 38 6 0 0
VCDI 0 19 7 69 184 816 5657 29746

Queen Elisabeth Islands:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 272 2861
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 272 2861

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 14 22 0
VCDI 0 0 0 0 0 161 1773 8012
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 20 24 0
VCDI 0 0 0 0 0 155 1771 8012

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 24 6 0
ODI 0 0 0 0 0 20 16 0
CDI 0 0 0 0 8 40 15 0
VCDI 0 0 0 0 10 105 1955 3455
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 6 2 0
VODI 0 0 0 0 0 34 19 0
ODI 0 0 0 0 4 20 25 0
CDI 0 0 0 0 11 41 59 0
VCDI 0 0 0 0 3 88 1887 3455

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 57 7189
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 57 7189

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 52 1714 3560
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 16 0
VCDI 0 0 0 0 0 52 1698 3560

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 104 6 11 0 0 0 0
OW 0 17 0 0 0 0 0 0
VODI 0 22 0 0 0 0 0 0
ODI 0 13 1 4 7 0 0 0
CDI 0 29 4 38 28 5 0 4
VCDI 0 12 7 62 157 272 2739 2789
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 83 6 11 0 0 0 0
OW 0 17 0 0 0 0 0 0
VODI 0 21 0 0 0 0 0 0
ODI 0 15 0 0 0 0 0 0
CDI 0 20 0 0 3 0 1 14
VCDI 0 41 12 104 189 277 2738 2779

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3410 4580 47 154 17 0 0 0
OW 0 157 11 122 31 0 0 0
VODI 0 54 24 157 96 1 0 0
ODI 0 14 0 79 150 13 0 0
CDI 0 11 0 7 225 112 4 0
VCDI 0 0 0 14 264 1339 238 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3410 4567 50 173 24 0 0 0
OW 0 148 18 87 40 1 0 0
VODI 0 70 14 145 89 4 0 0
ODI 0 13 0 87 100 13 0 0
CDI 0 12 0 23 148 82 7 0
VCDI 0 6 0 18 382 1365 235 0

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4558 3170 20 116 4 0 0 0
OW 0 55 16 95 19 0 0 0
VODI 0 11 7 105 75 0 0 0
ODI 0 0 1 45 130 12 0 0
CDI 0 0 0 15 187 247 151 0
VCDI 0 0 0 0 80 871 1706 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4558 3149 19 120 6 0 0 0
OW 0 59 11 73 20 0 0 0
VODI 0 28 11 87 51 0 0 0
ODI 0 0 3 60 79 0 0 0
CDI 0 0 0 34 140 30 0 0
VCDI 0 0 0 2 199 1100 1857 0

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7659 3541 28 85 69 27 4 0
OW 0 94 23 91 12 4 3 0
VODI 0 11 17 114 78 6 1 0
ODI 0 0 0 18 188 30 2 0
CDI 0 0 0 0 114 664 0 0
VCDI 0 0 0 0 0 89 16 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7659 3556 36 127 71 29 5 0
OW 0 75 13 76 44 3 2 0
VODI 0 15 18 84 89 13 2 0
ODI 0 0 1 21 137 47 1 0
CDI 0 0 0 0 120 415 16 0
VCDI 0 0 0 0 0 313 0 0

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 8 0 0 0 0
CDI 0 0 0 23 8 11 19 0
VCDI 0 0 0 2 142 462 3663 1465
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 1 5 7 5 0
VCDI 0 0 0 32 145 466 3677 1465

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 1 73 886 7627
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 1 73 886 7627

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11463 3684 11 91 21 0 0 0
OW 0 382 19 49 28 0 0 0
VODI 0 137 25 160 65 1 0 0
ODI 0 70 14 147 208 31 0 0
CDI 0 24 16 81 391 184 5 0
VCDI 0 2 0 16 275 1411 1198 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11463 3907 25 121 92 9 0 0
OW 0 210 17 55 41 35 0 0
VODI 0 141 33 113 77 53 0 0
ODI 0 40 8 141 126 62 0 0
CDI 0 1 2 104 273 300 14 0
VCDI 0 0 0 10 379 1168 1189 0


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