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: 2022-11-24

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-11-28

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 0 508 8 75 16 0 0 0
OW 0 27 3 47 26 0 0 0
VODI 0 19 1 42 43 6 0 0
ODI 0 1 3 31 39 14 0 0
CDI 0 0 0 13 66 33 3 0
VCDI 0 0 0 1 121 1323 4489 29944
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 475 5 50 14 0 0 0
OW 0 44 6 42 17 0 0 0
VODI 0 25 0 50 33 5 0 0
ODI 0 11 3 23 36 13 0 0
CDI 0 0 1 25 51 22 9 0
VCDI 0 0 0 19 160 1336 4483 29944

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 0 141 706 2286
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 0 141 706 2286

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 8 13 0 0
ODI 0 0 0 0 57 34 0 0
CDI 0 0 0 0 9 63 2 0
VCDI 0 0 0 0 0 228 5471 4097
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 1 0 0
OW 0 0 0 0 13 9 0 0
VODI 0 0 0 0 40 30 0 0
ODI 0 0 0 0 16 34 11 0
CDI 0 0 0 0 5 38 21 0
VCDI 0 0 0 0 0 226 5441 4097

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 585 22 44 4 0 0 0
OW 0 146 35 299 23 0 0 0
VODI 0 33 10 307 425 0 0 0
ODI 0 0 0 0 389 165 0 0
CDI 0 0 0 0 22 411 50 0
VCDI 0 0 0 0 0 584 1827 273
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 619 37 275 51 0 0 0
OW 0 142 28 268 209 1 0 0
VODI 0 3 2 107 415 58 0 0
ODI 0 0 0 0 157 247 0 0
CDI 0 0 0 0 30 271 61 0
VCDI 0 0 0 0 1 583 1816 273

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 4
VCDI 0 0 0 0 0 16 909 6317
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 22
VCDI 0 0 0 0 0 16 909 6299

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 1 4 0
VCDI 0 0 0 0 0 38 1940 3343
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 4 0
VCDI 0 0 0 0 0 38 1940 3343

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14 1451 25 96 69 0 0 0
OW 0 48 12 45 20 2 0 0
VODI 0 12 9 90 42 11 0 0
ODI 0 8 1 15 133 41 0 0
CDI 0 5 2 9 68 172 26 0
VCDI 0 0 0 21 71 237 2268 1308
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14 1338 21 86 66 0 0 0
OW 0 92 6 21 28 2 0 0
VODI 0 63 11 55 47 16 0 0
ODI 0 18 6 54 65 57 0 0
CDI 0 11 3 28 55 74 22 1
VCDI 0 2 2 32 142 314 2272 1307

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8168 2572 30 56 0 0 0 0
OW 0 33 5 32 17 0 0 0
VODI 0 3 3 33 36 0 0 0
ODI 0 0 0 7 42 17 0 0
CDI 0 0 0 0 19 53 10 0
VCDI 0 0 0 0 0 24 171 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8168 2554 29 66 4 0 0 0
OW 0 34 2 17 24 0 0 0
VODI 0 20 7 18 29 1 0 0
ODI 0 0 0 26 25 20 0 0
CDI 0 0 0 1 29 40 5 0
VCDI 0 0 0 0 3 33 176 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 6446 2540 24 76 7 1 0 0
OW 0 74 9 90 25 2 0 0
VODI 0 14 4 92 93 2 0 0
ODI 0 1 1 39 127 2 0 0
CDI 0 0 0 3 209 128 0 0
VCDI 0 0 0 0 21 717 923 26
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6446 2526 21 84 18 1 0 0
OW 0 79 10 59 29 3 0 0
VODI 0 22 6 83 76 2 0 0
ODI 0 2 1 52 86 12 0 0
CDI 0 0 0 22 220 91 0 0
VCDI 0 0 0 0 53 743 923 26

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10534 1943 28 143 164 112 12 0
OW 0 3 1 4 9 13 0 0
VODI 0 0 0 4 16 0 0 0
ODI 0 0 0 0 2 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10534 1943 29 147 174 122 12 0
OW 0 3 0 4 11 3 0 0
VODI 0 0 0 0 6 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 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 0 790 15 46 1 0 0 0
OW 0 25 5 64 10 0 0 0
VODI 0 5 2 64 43 2 0 0
ODI 0 0 0 23 71 23 0 0
CDI 0 0 0 3 98 120 2 0
VCDI 0 0 0 0 139 1383 2577 292
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 737 9 14 0 0 0 0
OW 0 50 6 47 0 0 0 0
VODI 0 29 4 68 17 0 0 0
ODI 0 4 3 44 36 0 0 0
CDI 0 0 0 21 81 33 0 0
VCDI 0 0 0 6 228 1495 2579 292

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2314 2877 29 122 22 2 0 0
OW 57 356 22 192 169 29 0 0
VODI 6 104 10 144 122 30 0 0
ODI 0 24 5 37 155 62 0 0
CDI 0 6 1 12 62 303 20 0
VCDI 0 0 0 12 96 1018 167 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2330 2706 33 178 76 22 0 0
OW 39 424 15 101 150 20 0 0
VODI 8 190 10 119 108 40 0 0
ODI 0 37 6 71 82 41 0 0
CDI 0 8 2 19 76 188 18 0
VCDI 0 2 1 31 134 1133 169 0

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15939 3199 18 20 0 0 0 0
OW 12 62 19 51 2 0 0 0
VODI 0 11 3 62 33 0 0 0
ODI 0 0 0 21 89 0 0 0
CDI 0 0 0 5 109 1 0 0
VCDI 0 0 0 0 118 383 52 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15844 3064 21 22 0 0 0 0
OW 51 120 10 48 1 0 0 0
VODI 56 88 9 45 35 0 0 0
ODI 0 0 0 30 48 0 0 0
CDI 0 0 0 14 92 1 0 0
VCDI 0 0 0 0 175 383 52 0


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