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: 2021-06-17

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-06-21

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 0 102 6 3 31 6 0 0
OW 0 13 8 40 10 14 0 0
VODI 0 0 1 78 60 24 0 0
ODI 0 0 0 21 240 58 3 0
CDI 0 0 0 18 1556 2610 331 0
VCDI 0 0 0 0 3574 6913 9835 11347
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 70 2 10 38 10 0 0
OW 0 24 6 33 29 24 0 0
VODI 0 20 5 38 66 39 3 0
ODI 0 1 2 28 147 75 12 0
CDI 0 0 0 51 617 1397 512 3
VCDI 0 0 0 0 4574 8080 9642 11344

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 0 145 7 52 7 0 0 0
OW 0 5 1 21 5 0 0 0
VODI 0 14 2 24 29 0 0 0
ODI 0 7 4 18 3 0 0 0
CDI 0 5 1 5 62 68 0 0
VCDI 0 0 0 1 1098 598 841 110
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 147 8 41 7 0 0 0
OW 0 2 0 31 7 0 0 0
VODI 0 15 2 23 26 0 0 0
ODI 0 6 3 12 3 0 0 0
CDI 0 6 2 11 32 37 0 0
VCDI 0 0 0 3 1129 629 841 110

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 338 29 132 17 0 0 0
OW 0 22 8 90 33 0 0 0
VODI 0 12 0 69 80 0 0 0
ODI 0 16 0 22 128 1 0 0
CDI 0 47 4 54 384 527 0 0
VCDI 0 8 3 35 224 7050 648 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 280 24 143 65 0 0 0
OW 0 33 7 80 70 0 0 0
VODI 0 24 2 40 48 0 0 0
ODI 0 19 4 28 69 6 0 0
CDI 0 38 0 20 224 412 0 0
VCDI 0 49 7 91 390 7160 648 1

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 90 957 4 5 0 0 0 0
OW 5 59 10 30 1 0 0 0
VODI 0 37 5 66 33 0 0 0
ODI 0 52 6 97 263 13 0 0
CDI 0 61 6 51 241 1237 213 0
VCDI 0 0 0 0 0 1203 909 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 88 685 3 6 0 0 0 0
OW 7 105 4 12 18 0 0 0
VODI 0 104 6 40 104 7 0 0
ODI 0 81 4 98 128 82 0 0
CDI 0 191 14 93 288 1169 276 0
VCDI 0 0 0 0 0 1195 846 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 0 603 27 35 0 0 0 0
OW 0 38 10 119 7 0 0 0
VODI 0 25 4 166 134 43 0 0
ODI 0 43 13 159 871 153 0 0
CDI 0 0 3 32 1367 2973 123 0
VCDI 0 0 0 8 33 219 38 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 426 11 31 0 0 0 0
OW 0 87 7 54 10 0 0 0
VODI 0 65 15 104 115 110 0 0
ODI 0 27 5 79 339 212 3 0
CDI 0 99 16 225 1848 2675 124 0
VCDI 0 5 3 26 100 391 34 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 1598 51 239 33 0 0 0
OW 0 144 37 407 71 0 0 0
VODI 0 154 5 630 413 0 0 0
ODI 0 5 2 46 829 1 0 0
CDI 0 2 0 3 355 300 0 0
VCDI 0 0 0 0 1 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 0 1560 64 425 77 0 0 0
OW 0 137 22 381 195 0 0 0
VODI 0 156 7 366 477 3 0 0
ODI 0 48 2 137 354 31 0 0
CDI 0 2 0 16 599 267 0 0
VCDI 0 0 0 0 0 0 0 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 203 1910 71 531 43 0 0 0
OW 0 44 18 276 59 0 0 0
VODI 0 0 0 141 271 10 0 0
ODI 0 0 0 2 490 175 0 0
CDI 0 0 0 0 28 437 14 0
VCDI 0 0 0 0 1 235 1308 64
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 203 1805 78 670 110 0 0 0
OW 0 73 1 181 195 15 0 0
VODI 0 71 4 46 477 119 0 0
ODI 0 5 6 51 55 175 4 0
CDI 0 0 0 2 49 281 70 0
VCDI 0 0 0 0 6 267 1248 64

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8179 2269 6 20 0 0 0 0
OW 0 69 17 109 6 0 0 0
VODI 0 2 0 226 48 0 0 0
ODI 0 0 0 31 141 2 0 0
CDI 0 0 0 4 160 42 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 8179 2224 9 23 0 0 0 0
OW 0 79 10 113 2 0 0 0
VODI 0 24 3 162 44 0 0 0
ODI 0 10 1 58 92 1 0 0
CDI 0 3 0 34 215 42 0 0
VCDI 0 0 0 0 2 1 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 6471 2759 30 190 12 0 0 0
OW 0 23 7 164 5 0 0 0
VODI 0 0 0 222 131 5 0 0
ODI 0 0 0 93 598 22 0 0
CDI 0 0 0 93 600 267 4 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 6471 2759 34 304 17 0 0 0
OW 0 23 2 146 31 0 0 0
VODI 0 0 1 124 131 4 0 0
ODI 0 0 0 66 362 24 0 0
CDI 0 0 0 122 805 266 4 0
VCDI 0 0 0 0 0 0 0 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 8988 3264 37 203 15 0 0 0
OW 0 13 3 98 26 0 0 0
VODI 0 0 0 51 87 1 0 0
ODI 0 0 0 1 187 14 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 8988 3276 38 252 31 0 0 0
OW 0 1 2 83 80 0 0 0
VODI 0 0 0 18 122 2 0 0
ODI 0 0 0 0 75 3 0 0
CDI 0 0 0 0 7 10 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 1584 36 133 51 0 0 0
OW 0 63 20 151 78 0 0 0
VODI 0 3 9 166 247 0 0 0
ODI 0 0 0 38 913 79 0 0
CDI 0 0 0 0 120 2004 22 0
VCDI 0 0 0 0 0 13 73 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1557 34 199 110 0 0 0
OW 0 64 18 125 133 0 0 0
VODI 0 27 7 118 495 18 0 0
ODI 0 2 6 35 484 126 0 0
CDI 0 0 0 11 176 1822 3 0
VCDI 0 0 0 0 11 130 92 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 1807 77 482 68 0 0 0
OW 0 70 23 458 110 0 0 0
VODI 0 5 3 422 493 1 0 0
ODI 0 0 0 66 1291 149 4 0
CDI 0 0 0 0 435 2094 103 0
VCDI 0 0 0 0 7 112 307 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1781 84 670 178 0 0 0
OW 0 86 16 339 254 6 0 0
VODI 0 15 3 267 431 8 0 0
ODI 0 0 0 110 713 120 17 0
CDI 0 0 0 42 765 2118 196 0
VCDI 0 0 0 0 63 104 201 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 17846 1872 31 255 71 0 0 0
OW 0 0 0 30 11 0 0 0
VODI 0 0 0 19 20 0 0 0
ODI 0 0 0 1 41 12 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 17846 1872 31 282 96 0 0 0
OW 0 0 0 17 13 0 0 0
VODI 0 0 0 6 27 7 0 0
ODI 0 0 0 0 7 5 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0


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