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: 2022-06-23

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-06-27

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 0 361 0 9 5 0 0 0
OW 0 71 2 9 2 0 0 0
VODI 0 69 1 19 8 0 0 0
ODI 0 37 11 25 34 10 2 0
CDI 0 49 11 108 300 372 7 0
VCDI 0 0 0 0 2552 6949 21480 4399
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 261 0 11 5 0 0 0
OW 0 76 0 5 3 0 0 0
VODI 0 92 3 7 10 2 0 0
ODI 0 84 3 22 27 15 2 0
CDI 0 74 19 125 291 301 77 0
VCDI 0 0 0 0 2565 7013 21410 4399

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 3 0 0 0 0
OW 0 1 0 4 0 0 0 0
VODI 0 0 0 9 5 0 0 0
ODI 0 0 0 3 12 7 0 0
CDI 0 0 0 0 145 328 0 0
VCDI 0 0 0 0 1033 1115 467 1
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 1 0 5 0 0 0 0
VODI 0 0 0 7 6 1 0 0
ODI 0 0 0 5 13 22 0 0
CDI 0 0 0 0 44 277 0 0
VCDI 0 0 0 0 1132 1150 467 1

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 1 6 0 0 0
VODI 0 2 0 4 27 0 0 0
ODI 0 9 0 32 80 0 0 0
CDI 0 5 2 166 1040 122 0 0
VCDI 0 3 4 237 7677 565 0 0
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 1 8 0 0 0
VODI 0 0 0 1 15 0 0 0
ODI 0 5 0 24 46 0 0 0
CDI 0 8 0 112 574 7 0 0
VCDI 0 6 6 302 8187 680 0 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 381 1324 6 14 0 0 0 0
OW 14 157 22 51 3 0 0 0
VODI 0 61 15 181 60 0 0 0
ODI 0 22 5 69 421 0 0 0
CDI 0 20 5 89 1167 580 0 0
VCDI 0 0 0 25 483 479 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 383 1133 4 13 0 0 0 0
OW 12 161 15 57 8 0 0 0
VODI 0 124 11 103 71 0 0 0
ODI 0 88 9 77 185 0 0 0
CDI 0 78 14 154 957 399 0 0
VCDI 0 0 0 25 913 660 0 0

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 5 3 0 0 0
VODI 0 0 0 38 112 13 0 0
ODI 0 0 0 75 352 65 0 0
CDI 0 0 0 21 749 2264 171 0
VCDI 0 0 0 0 7 2822 549 0
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 59 23 0 0
ODI 0 0 0 28 200 65 6 0
CDI 0 0 0 110 858 1830 76 0
VCDI 0 0 0 0 106 3246 638 0

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 1050 22 69 27 0 0 0
OW 0 116 26 68 69 13 0 0
VODI 0 39 18 148 90 62 0 0
ODI 0 22 6 121 323 146 0 0
CDI 0 18 5 74 314 1343 215 0
VCDI 0 0 0 0 2 229 691 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 955 22 95 77 26 0 0
OW 0 83 14 39 41 71 0 0
VODI 0 44 15 108 158 175 0 0
ODI 0 84 7 40 148 320 83 0
CDI 0 79 19 193 305 955 206 0
VCDI 0 0 0 5 96 246 617 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 3265 39 131 13 2 0 0
OW 0 218 52 251 39 7 0 0
VODI 0 20 20 563 198 5 0 0
ODI 0 2 3 89 610 103 0 0
CDI 0 0 0 21 153 339 11 0
VCDI 0 0 0 0 10 41 113 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 3094 33 183 25 5 0 0
OW 0 295 37 229 68 4 0 0
VODI 0 103 39 384 210 27 0 0
ODI 0 12 3 230 452 111 0 0
CDI 0 1 2 29 256 317 113 0
VCDI 0 0 0 0 12 33 11 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 8726 2381 14 31 1 0 0 0
OW 0 63 2 22 0 0 0 0
VODI 0 26 5 55 3 0 0 0
ODI 0 0 0 1 1 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 8726 2389 13 37 1 0 0 0
OW 0 61 4 25 1 0 0 0
VODI 0 20 4 37 2 0 0 0
ODI 0 0 0 10 1 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 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 7152 2450 11 60 3 0 0 0
OW 0 117 12 74 17 0 0 0
VODI 0 8 6 192 102 3 0 0
ODI 0 0 0 94 200 22 1 0
CDI 0 0 0 21 353 370 29 0
VCDI 0 0 0 0 34 161 204 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7152 2432 14 82 15 0 0 0
OW 0 107 5 78 38 0 0 0
VODI 0 34 7 97 121 10 0 0
ODI 0 2 3 114 118 104 1 0
CDI 0 0 0 70 347 250 29 0
VCDI 0 0 0 0 70 192 204 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 9393 2826 38 208 19 0 0 0
OW 0 27 10 86 38 0 0 0
VODI 0 0 0 49 91 3 0 0
ODI 0 0 0 2 109 36 0 0
CDI 0 0 0 0 16 37 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 9393 2847 46 254 46 0 0 0
OW 0 6 2 80 74 2 0 0
VODI 0 0 0 11 126 42 0 0
ODI 0 0 0 0 27 32 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 1489 59 303 90 13 0 0
OW 0 14 15 235 102 2 0 0
VODI 0 0 0 216 388 1 0 0
ODI 0 0 0 35 1268 79 0 0
CDI 0 0 0 0 150 1029 35 0
VCDI 0 0 0 0 0 14 266 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1495 64 429 170 13 0 0
OW 0 8 10 216 252 3 0 0
VODI 0 0 0 106 613 17 0 0
ODI 0 0 0 36 622 140 7 0
CDI 0 0 0 2 341 930 152 0
VCDI 0 0 0 0 0 35 142 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 747 3303 59 459 55 1 0 0
OW 0 3 4 313 109 9 3 0
VODI 0 0 0 326 696 23 9 0
ODI 0 0 0 88 1010 244 8 0
CDI 0 0 0 27 153 859 55 0
VCDI 0 0 0 0 0 0 24 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 747 3270 60 743 474 13 0 0
OW 0 36 3 294 781 68 9 0
VODI 0 0 0 49 422 448 22 0
ODI 0 0 0 20 147 399 4 0
CDI 0 0 0 107 199 203 52 0
VCDI 0 0 0 0 0 5 12 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 17105 2235 40 116 7 0 0 0
OW 0 9 10 109 29 0 0 0
VODI 0 0 0 171 96 0 0 0
ODI 0 0 0 6 129 11 0 0
CDI 0 0 0 0 45 91 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 17105 2229 43 188 27 0 0 0
OW 0 15 6 101 71 0 0 0
VODI 0 0 1 85 57 0 0 0
ODI 0 0 0 28 74 1 0 0
CDI 0 0 0 0 77 96 0 0
VCDI 0 0 0 0 0 5 0 0


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