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: 2021-05-20

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-05-24

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 0 34 98 1 0
OW 0 0 0 2 3 28 5 0
VODI 0 0 0 6 12 39 8 0
ODI 0 0 0 5 15 39 4 0
CDI 0 0 0 43 191 224 87 0
VCDI 0 0 0 0 46 2547 10407 23058
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 35 115 6 0
OW 0 0 0 2 0 42 4 0
VODI 0 0 0 2 9 55 6 0
ODI 0 0 0 5 16 48 23 0
CDI 0 0 0 41 87 165 75 0
VCDI 0 0 0 6 154 2550 10398 23058

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 1 2 29 17 2 0 0
CDI 0 13 6 29 81 77 17 0
VCDI 0 0 0 0 21 78 651 2107
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 3 5 1 0 0
CDI 0 14 8 56 80 51 25 0
VCDI 0 0 0 0 35 105 643 2107

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 16 7 23 15 0 0 0
OW 0 35 3 18 22 1 0 0
VODI 0 18 4 69 38 1 0 0
ODI 0 18 3 39 67 8 0 0
CDI 0 36 6 84 316 488 32 0
VCDI 0 1 2 28 52 1447 4316 2769
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 10 6 19 8 0 0 0
OW 0 13 3 12 26 1 0 0
VODI 0 26 2 58 42 2 0 0
ODI 0 29 4 41 62 22 2 0
CDI 0 26 6 78 223 410 130 0
VCDI 0 20 4 53 149 1510 4216 2769

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 5 1 0 0 0
VODI 0 23 5 28 7 0 6 0
ODI 0 31 2 55 16 6 6 0
CDI 0 100 10 200 300 276 33 0
VCDI 0 0 0 2 55 913 2706 868
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 14 1 10 2 0 10 0
ODI 0 18 5 20 9 7 10 0
CDI 0 122 11 168 141 75 96 38
VCDI 0 0 0 92 227 1113 2635 830

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 1 0 0 0
ODI 0 0 0 3 8 0 0 0
CDI 0 0 0 58 180 131 33 16
VCDI 0 0 0 0 54 398 3608 2756
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 29 50 68 264 19
VCDI 0 0 0 32 193 461 3377 2753

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 5 1 24 34 17 3 0
ODI 0 34 3 50 61 46 17 0
CDI 0 205 28 318 508 309 56 24
VCDI 0 0 1 0 197 2152 1022 211
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 12 8 4 4 0
ODI 0 15 4 30 50 53 21 2
CDI 0 176 11 136 164 186 207 89
VCDI 0 53 18 214 578 2281 866 144

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 48 6 59 0 0 0 0
OW 0 12 3 117 21 1 0 0
VODI 0 0 2 222 170 0 0 0
ODI 0 0 0 51 412 53 0 0
CDI 0 0 0 11 459 1699 38 0
VCDI 0 0 0 0 5 1142 1796 4
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 41 4 87 0 0 0 0
OW 0 14 3 94 19 1 0 0
VODI 0 5 4 157 213 6 0 0
ODI 0 0 0 76 279 66 0 0
CDI 0 0 0 46 482 1225 28 0
VCDI 0 0 0 0 74 1597 1806 4

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4474 3641 49 437 159 0 0 0
OW 0 188 23 142 96 0 0 0
VODI 0 56 13 212 201 2 0 0
ODI 0 15 3 89 543 28 0 0
CDI 0 4 3 67 362 492 1 0
VCDI 0 0 0 0 0 31 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4474 3599 50 493 242 0 0 0
OW 0 132 15 102 106 0 0 0
VODI 0 128 11 117 174 6 0 0
ODI 0 32 10 134 254 27 0 0
CDI 0 13 5 101 535 373 1 0
VCDI 0 0 0 0 50 147 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 5106 3271 29 173 74 13 0 0
OW 0 45 18 107 31 18 0 0
VODI 0 7 1 132 101 23 0 0
ODI 0 0 0 49 323 51 0 0
CDI 0 0 0 18 445 661 27 0
VCDI 0 0 0 4 40 170 759 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5106 3271 33 203 106 34 0 0
OW 0 43 12 91 50 27 0 0
VODI 0 9 3 109 98 57 0 0
ODI 0 0 0 53 220 65 0 0
CDI 0 0 0 12 467 488 34 0
VCDI 0 0 0 15 73 265 752 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 8308 3243 18 77 38 0 0 0
OW 0 55 35 77 15 0 0 0
VODI 0 0 2 110 96 3 0 0
ODI 0 0 0 0 306 53 2 0
CDI 0 0 0 0 86 196 36 0
VCDI 0 0 0 0 0 31 201 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8308 3267 33 104 49 0 0 0
OW 0 31 19 90 37 1 0 0
VODI 0 0 3 70 136 25 0 0
ODI 0 0 0 0 248 63 8 0
CDI 0 0 0 0 71 194 231 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 0 441 4 14 1 0 0 0
OW 0 63 8 56 10 0 0 0
VODI 0 17 3 133 87 0 1 0
ODI 0 6 1 73 278 0 4 0
CDI 0 7 2 9 357 813 27 0
VCDI 0 0 3 19 141 1261 1964 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 370 0 18 2 0 0 0
OW 0 56 4 13 13 0 0 0
VODI 0 46 5 63 23 0 5 0
ODI 0 24 6 103 140 0 13 0
CDI 0 16 1 71 421 338 18 0
VCDI 0 22 5 36 275 1736 1960 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 4 6 69 0 0 0 0
OW 0 17 5 104 40 1 0 0
VODI 0 22 5 160 243 15 0 0
ODI 0 0 1 85 297 91 5 0
CDI 0 0 2 39 578 634 173 0
VCDI 0 0 0 0 267 1711 3840 173
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 4 5 76 1 0 0 0
OW 0 7 3 88 63 0 0 0
VODI 0 17 2 89 201 22 0 0
ODI 0 14 5 81 189 97 9 0
CDI 0 1 4 109 367 395 181 0
VCDI 0 0 0 14 604 1938 3828 173

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14343 4171 60 242 54 0 0 0
OW 0 34 9 160 29 0 0 0
VODI 0 0 1 129 216 0 0 0
ODI 0 0 0 12 556 74 0 0
CDI 0 0 0 0 69 50 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 14343 4176 65 371 69 0 0 0
OW 0 29 5 107 96 0 0 0
VODI 0 0 0 36 315 12 0 0
ODI 0 0 0 29 323 74 0 0
CDI 0 0 0 0 121 38 0 0
VCDI 0 0 0 0 0 0 0 0


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