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: 2022-05-26

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-05-30

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 0 5 1 0 0 0
OW 0 1 1 6 6 0 0 0
VODI 0 2 1 33 19 0 0 0
ODI 0 3 1 19 36 3 0 0
CDI 0 9 3 86 233 188 41 0
VCDI 0 0 0 0 72 3236 11845 21052
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 6 3 0 0 0
OW 0 0 1 4 7 0 0 0
VODI 0 0 0 8 20 1 0 0
ODI 0 0 0 14 28 8 1 0
CDI 0 11 0 70 150 197 172 0
VCDI 0 4 5 47 159 3221 11713 21052

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 1 1 0 0 0
ODI 0 0 0 5 2 1 0 0
CDI 0 0 0 8 7 21 43 2
VCDI 0 0 0 0 0 48 1057 1937
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 1 1 0 0 0
CDI 0 0 0 13 9 30 51 2
VCDI 0 0 0 0 0 40 1049 1937

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 0 0 0
VCDI 0 0 0 91 204 393 3861 5433
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 91 204 393 3861 5433

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 141 2 7 7 9 1 0
OW 0 48 1 12 13 1 1 0
VODI 0 49 3 23 25 0 0 0
ODI 0 37 4 23 43 8 0 0
CDI 0 61 8 84 140 146 6 0
VCDI 0 51 8 59 137 555 3644 297
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 86 1 8 15 9 1 0
OW 0 48 0 12 9 1 1 0
VODI 0 49 1 5 5 0 0 0
ODI 0 34 3 16 21 1 0 0
CDI 0 87 9 50 101 93 46 0
VCDI 0 83 12 117 214 615 3604 297

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 56 12 0
VCDI 0 0 0 0 35 1262 4551 1330
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 4 16 0
CDI 0 0 0 0 0 84 261 0
VCDI 0 0 0 0 35 1230 4286 1330

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 3 0 0 0
VODI 0 3 2 35 23 3 0 0
ODI 0 16 5 28 36 11 2 0
CDI 0 102 11 127 181 174 59 0
VCDI 0 72 6 92 410 990 2522 413
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 11 3 0 0 0
ODI 0 3 2 19 19 7 9 0
CDI 0 47 6 42 54 45 114 0
VCDI 0 143 16 210 577 1126 2460 413

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 71 6 53 9 0 0 0
OW 0 63 11 103 16 0 1 0
VODI 0 12 8 211 112 6 0 0
ODI 0 5 1 104 478 46 1 0
CDI 0 3 2 104 788 1739 57 0
VCDI 0 0 0 0 42 1453 826 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 35 5 82 11 0 0 0
OW 0 43 5 79 28 1 1 0
VODI 0 42 9 96 93 7 1 0
ODI 0 15 3 119 228 42 16 0
CDI 0 19 6 162 813 1420 132 0
VCDI 0 0 0 37 272 1774 735 0

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5400 3698 50 74 0 0 0 0
OW 0 176 39 281 5 0 0 0
VODI 0 70 15 480 137 0 0 0
ODI 0 41 3 153 302 0 0 0
CDI 0 27 6 136 176 62 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 5400 3170 31 46 0 0 0 0
OW 0 201 23 119 13 0 0 0
VODI 0 123 19 298 55 0 0 0
ODI 0 269 24 396 212 0 0 0
CDI 0 249 16 251 328 62 0 0
VCDI 0 0 0 14 12 0 0 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 5483 2863 26 81 0 0 0 0
OW 0 20 16 156 15 0 0 0
VODI 0 0 0 170 107 0 0 0
ODI 0 0 0 75 451 37 0 0
CDI 0 0 0 5 691 1006 7 0
VCDI 0 0 0 0 32 201 254 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5483 2797 26 104 6 0 0 0
OW 0 57 4 91 26 0 0 0
VODI 0 29 9 93 89 0 0 0
ODI 0 0 3 115 199 25 0 0
CDI 0 0 0 84 921 938 94 0
VCDI 0 0 0 0 55 281 167 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 8158 3474 57 248 162 2 0 0
OW 0 6 6 67 90 12 0 0
VODI 0 0 0 32 98 26 0 0
ODI 0 0 0 3 169 90 0 0
CDI 0 0 0 0 10 270 8 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 8158 3473 60 290 239 14 0 0
OW 0 7 3 33 84 27 0 0
VODI 0 0 0 22 97 100 1 0
ODI 0 0 0 5 109 258 7 0
CDI 0 0 0 0 0 1 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 0 267 5 17 0 0 0 0
OW 0 45 10 35 9 0 0 0
VODI 0 13 6 70 58 1 0 0
ODI 0 3 3 70 269 36 0 0
CDI 0 0 0 90 542 743 266 0
VCDI 0 0 0 49 128 602 2466 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 239 1 13 8 0 0 0
OW 0 34 7 16 17 0 0 0
VODI 0 34 7 32 66 26 0 0
ODI 0 18 6 66 124 45 0 0
CDI 0 3 3 142 551 642 629 0
VCDI 0 0 0 62 240 669 2103 0

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 8 3 243 24 0 0 0
OW 0 29 3 270 164 0 0 0
VODI 0 0 1 183 733 1 0 0
ODI 0 1 1 30 933 42 0 0
CDI 0 8 2 42 389 1236 95 0
VCDI 0 0 0 3 34 1159 2916 34
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 27 4 331 118 0 0 0
OW 0 10 2 219 297 0 0 0
VODI 0 0 0 114 530 15 0 0
ODI 0 0 1 33 493 113 4 0
CDI 0 9 3 46 742 846 343 0
VCDI 0 0 0 28 97 1464 2664 34

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13082 4012 66 727 91 0 0 0
OW 0 14 8 153 71 0 0 0
VODI 0 0 0 78 423 2 0 0
ODI 0 0 0 0 571 110 0 0
CDI 0 0 0 0 120 681 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 13082 4006 67 851 437 22 0 0
OW 0 19 5 62 167 24 0 0
VODI 0 1 2 40 269 50 0 0
ODI 0 0 0 5 264 69 0 0
CDI 0 0 0 0 139 628 0 0
VCDI 0 0 0 0 0 0 0 0


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