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: 2022-04-14

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-04-18

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 0 2 22 25 17 0 0
OW 0 0 0 8 10 10 2 0
VODI 0 0 0 7 7 16 14 0
ODI 0 0 0 2 15 21 13 0
CDI 0 0 0 2 4 30 79 6
VCDI 0 0 0 0 0 214 4179 32197
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 2 27 29 26 3 0
OW 0 0 0 6 6 12 11 0
VODI 0 0 0 5 13 20 24 0
ODI 0 0 0 3 10 16 34 0
CDI 0 0 0 0 3 16 85 6
VCDI 0 0 0 0 0 218 4130 32197

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 2 119 3012
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 2 119 3012

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 1 7 0
VCDI 0 0 0 0 0 13 1144 8817
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 1 9 0
VCDI 0 0 0 0 0 13 1142 8817

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 7 19 10 0
ODI 0 0 0 0 8 37 7 0
CDI 0 0 0 0 0 122 16 0
VCDI 0 0 0 0 0 345 2726 2357
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 3 0 0 0
VODI 0 0 0 0 12 30 0 0
ODI 0 0 0 0 0 45 6 0
CDI 0 0 0 0 0 121 20 0
VCDI 0 0 0 0 0 327 2733 2357

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 1 2 6
VCDI 0 0 0 0 0 46 1093 6098
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 13 9 14
VCDI 0 0 0 0 0 34 1086 6090

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 20 3 0
CDI 0 0 0 0 7 65 20 0
VCDI 0 0 0 0 25 357 2312 2517
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 11 2 0
CDI 0 0 0 0 5 47 18 0
VCDI 0 0 0 0 27 384 2315 2517

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 0 0 0 3 0 0 0
OW 0 0 0 0 10 5 0 0
VODI 0 0 0 0 14 17 0 0
ODI 0 0 0 0 11 30 1 0
CDI 0 0 0 0 20 87 45 0
VCDI 0 0 0 0 4 871 5176 37
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 7 4 0 0
OW 0 0 0 0 7 6 0 0
VODI 0 0 0 0 9 8 0 0
ODI 0 0 0 0 4 9 3 0
CDI 0 0 0 0 10 62 72 0
VCDI 0 0 0 0 25 921 5147 37

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3627 3144 31 265 44 0 0 0
OW 0 178 16 164 93 4 0 0
VODI 0 74 15 201 233 13 0 0
ODI 0 2 2 28 391 34 0 0
CDI 0 0 0 0 210 231 4 0
VCDI 0 0 0 0 51 408 1868 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3627 3163 39 318 68 1 0 0
OW 0 141 12 148 102 6 0 0
VODI 0 88 6 95 229 11 0 0
ODI 0 6 7 70 190 30 0 0
CDI 0 0 0 27 238 133 16 0
VCDI 0 0 0 0 195 509 1856 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 4698 3354 15 95 3 0 0 0
OW 0 97 14 87 34 0 0 0
VODI 0 17 12 94 82 0 0 0
ODI 0 3 3 48 134 7 0 0
CDI 0 0 0 22 151 244 117 0
VCDI 0 0 0 3 39 416 1755 152
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4698 3341 16 100 4 0 0 0
OW 0 80 11 70 16 0 0 0
VODI 0 41 10 76 53 0 0 0
ODI 0 7 5 61 86 0 0 0
CDI 0 2 2 34 199 106 4 0
VCDI 0 0 0 8 85 561 1868 152

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8277 3282 39 133 130 45 0 0
OW 0 91 23 60 16 1 0 0
VODI 0 24 14 98 43 0 0 0
ODI 0 0 1 27 121 20 5 0
CDI 0 0 0 2 123 186 32 0
VCDI 0 0 0 0 0 113 82 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8277 3262 43 158 136 46 0 0
OW 0 84 13 36 18 0 0 0
VODI 0 45 16 60 62 14 5 0
ODI 0 6 5 52 88 40 8 0
CDI 0 0 0 14 125 162 46 0
VCDI 0 0 0 0 4 103 60 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 3 0 0 0 0
OW 0 0 0 3 0 0 0 0
VODI 0 0 0 5 6 0 0 0
ODI 0 0 0 0 17 0 0 0
CDI 0 0 0 0 74 15 0 0
VCDI 0 0 0 0 68 542 3919 1151
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 2 0 0 0 0
OW 0 0 0 4 0 0 0 0
VODI 0 0 0 3 4 0 0 0
ODI 0 0 0 2 11 0 0 0
CDI 0 0 0 0 45 1 1 0
VCDI 0 0 0 0 105 556 3918 1151

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 10 0 0
ODI 0 0 0 0 8 36 12 0
CDI 0 0 0 0 13 205 67 13
VCDI 0 0 0 0 41 991 4436 2755
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 1 4 2 0
CDI 0 0 0 0 15 64 71 25
VCDI 0 0 0 0 46 1174 4442 2743

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11178 4195 33 195 51 0 0 0
OW 0 163 22 163 99 0 0 0
VODI 0 6 6 128 275 37 0 0
ODI 0 0 0 9 637 159 0 0
CDI 0 0 0 0 229 638 22 0
VCDI 0 0 0 7 78 930 949 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11178 4271 52 328 124 0 0 0
OW 0 68 3 113 193 12 0 0
VODI 0 25 6 41 408 105 0 0
ODI 0 0 0 13 236 287 13 0
CDI 0 0 0 0 265 361 57 0
VCDI 0 0 0 7 143 999 901 0


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