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: 2024-06-13

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-06-17

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 1 0 0 0 0
OW 0 38 14 9 0 0 0 0
VODI 0 3 5 69 26 0 0 0
ODI 0 0 0 53 399 32 0 0
CDI 0 0 0 5 394 1570 154 0
VCDI 0 0 0 0 2 6642 14326 13160
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 12 0 6 0 0 0 0
VODI 0 15 5 30 37 0 0 0
ODI 0 11 6 39 149 163 12 0
CDI 0 3 8 62 629 1393 1506 80
VCDI 0 0 0 0 6 6688 12962 13080

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 0 135 0 0 0 0 0 0
OW 0 136 12 8 1 0 0 0
VODI 0 22 2 36 19 0 1 0
ODI 0 2 0 8 28 0 1 0
CDI 0 0 0 2 46 50 10 0
VCDI 0 0 0 3 525 935 1136 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 126 0 0 0 0 0 0
OW 0 75 3 2 1 0 0 0
VODI 0 67 9 18 14 0 1 0
ODI 0 25 1 17 25 0 3 0
CDI 0 2 1 20 45 4 29 0
VCDI 0 0 0 0 534 981 1115 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 0 527 12 28 2 0 0 0
OW 0 558 101 79 4 0 0 0
VODI 2 4 8 293 65 0 1 0
ODI 0 0 0 48 536 50 4 0
CDI 0 0 0 0 318 2381 89 0
VCDI 0 0 0 0 39 2825 2004 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 419 11 37 5 0 0 0
OW 0 535 73 95 4 0 0 0
VODI 2 132 29 196 104 9 3 0
ODI 0 3 8 93 197 72 27 0
CDI 0 0 0 27 594 979 123 0
VCDI 0 0 0 0 60 4196 1945 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 0 158 2 1 0 0 0 0
OW 0 189 33 17 0 1 0 0
VODI 0 10 35 158 32 4 0 0
ODI 0 0 0 81 269 15 0 0
CDI 0 0 0 1 171 1637 94 0
VCDI 0 0 0 0 10 1420 1309 6
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 127 0 0 0 0 0 0
OW 0 96 10 6 6 4 0 0
VODI 0 101 15 44 28 13 0 0
ODI 0 32 34 79 80 27 12 0
CDI 0 1 11 129 344 663 555 0
VCDI 0 0 0 0 24 2370 836 6

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 2 0 0 0 0 0 0
OW 0 32 20 8 9 0 0 0
VODI 0 3 2 39 47 5 0 0
ODI 0 0 0 25 121 46 0 0
CDI 0 0 0 21 571 706 75 0
VCDI 0 0 0 0 749 4394 349 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 1 0 0 0
OW 0 14 0 0 15 1 0 0
VODI 0 16 8 10 43 33 0 0
ODI 0 7 14 19 105 69 1 0
CDI 0 0 0 64 212 336 149 0
VCDI 0 0 0 0 1121 4712 274 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 45 17 30 31 0 0 0
OW 0 371 96 89 28 5 0 0
VODI 0 7 28 427 118 11 0 0
ODI 0 0 1 79 919 141 0 0
CDI 0 0 0 6 321 1916 63 0
VCDI 0 0 0 0 6 523 21 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 23 16 62 39 0 0 0
OW 0 123 37 74 38 5 0 0
VODI 0 184 38 212 156 42 0 0
ODI 0 92 41 189 600 181 0 0
CDI 0 1 10 94 561 1118 19 0
VCDI 0 0 0 0 29 1250 65 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 0 5 0 7 2 0 0 0
OW 0 57 83 110 16 1 0 0
VODI 0 2 5 486 123 6 0 0
ODI 0 0 0 107 1143 103 0 0
CDI 0 0 0 25 491 1782 74 0
VCDI 0 0 0 1 0 140 1520 28
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 5 2 29 2 0 0 0
OW 0 50 46 111 17 0 0 0
VODI 0 9 40 314 121 1 0 0
ODI 0 0 0 183 663 183 1 0
CDI 0 0 0 98 948 1554 343 0
VCDI 0 0 0 1 24 294 1250 28

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5517 3004 18 13 0 0 0 0
OW 27 1379 220 162 4 0 0 0
VODI 0 16 17 700 37 0 0 0
ODI 0 0 0 54 153 0 0 0
CDI 0 0 0 0 1 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 5495 2607 14 23 0 0 0 0
OW 49 1528 107 131 8 0 0 0
VODI 0 251 132 535 52 0 0 0
ODI 0 13 2 226 123 0 0 0
CDI 0 0 0 14 12 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 6357 2674 21 0 0 0 0 0
OW 0 246 153 93 0 0 0 0
VODI 0 0 12 463 44 0 0 0
ODI 0 0 0 56 381 3 0 0
CDI 0 0 0 0 250 654 14 0
VCDI 0 0 0 0 4 112 159 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6357 2530 33 13 0 0 0 0
OW 0 316 92 69 1 0 0 0
VODI 0 58 46 282 21 0 0 0
ODI 0 16 15 214 178 1 0 0
CDI 0 0 0 34 454 324 10 0
VCDI 0 0 0 0 25 444 163 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 8001 3041 43 26 0 0 0 0
OW 0 142 144 173 7 0 0 0
VODI 0 7 3 583 142 0 0 0
ODI 0 1 0 19 465 31 0 0
CDI 0 0 0 0 19 116 8 0
VCDI 0 0 0 0 0 0 16 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8001 2873 39 27 0 0 0 0
OW 0 311 126 206 28 0 0 0
VODI 0 7 25 532 311 11 0 0
ODI 0 0 0 36 274 106 5 0
CDI 0 0 0 0 20 30 19 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 9 569 15 6 0 0 0 0
OW 0 417 134 63 0 0 1 0
VODI 0 33 40 427 58 1 3 0
ODI 0 0 0 127 403 10 4 0
CDI 0 0 0 0 396 1429 73 0
VCDI 0 0 0 0 11 122 1438 14
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9 487 2 1 0 0 0 0
OW 0 267 65 91 0 0 1 0
VODI 0 193 47 165 55 1 4 0
ODI 0 66 62 200 181 7 4 0
CDI 0 6 13 166 607 1298 875 11
VCDI 0 0 0 0 25 256 635 3

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1519 1781 10 10 0 0 0 0
OW 0 627 11 61 8 0 0 0
VODI 0 176 33 289 104 5 3 0
ODI 0 44 23 271 409 42 9 0
CDI 0 10 3 167 829 1058 47 0
VCDI 0 0 0 10 64 412 503 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1518 1493 7 4 0 0 0 0
OW 1 480 8 102 48 0 0 0
VODI 0 217 3 95 90 3 0 0
ODI 0 172 4 92 141 43 10 0
CDI 0 276 58 393 651 425 229 0
VCDI 0 0 0 122 484 1046 323 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 11379 2945 14 33 15 0 0 0
OW 0 285 118 128 13 0 0 0
VODI 0 9 1 245 40 12 0 0
ODI 0 1 2 28 118 35 0 0
CDI 0 0 1 3 47 210 2 0
VCDI 0 0 0 0 0 37 25 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11372 2760 11 9 0 0 0 0
OW 7 423 98 232 47 17 0 0
VODI 0 56 20 138 84 107 0 0
ODI 0 1 7 50 46 13 0 0
CDI 0 0 0 8 56 118 4 0
VCDI 0 0 0 0 0 39 23 0


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