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: 2024-06-27

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: 2024-07-01

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 4 0 0 0 0 0 0
OW 0 33 16 20 4 0 0 0
VODI 0 6 20 288 91 0 0 0
ODI 0 0 4 164 1101 75 0 0
CDI 0 0 0 0 558 17394 301 0
VCDI 0 0 0 0 134 14068 2621 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 13 0 0 0 0
OW 0 9 1 23 4 0 0 0
VODI 0 17 17 62 56 2 0 0
ODI 0 16 15 175 405 132 0 0
CDI 0 1 7 199 1256 10935 845 0
VCDI 0 0 0 0 167 20468 2077 0

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 20 223 0 0 0 0 0 0
OW 1 25 10 15 7 0 0 0
VODI 0 25 3 43 14 0 0 0
ODI 0 2 1 16 9 2 0 0
CDI 26 0 0 10 111 171 0 0
VCDI 7 0 0 16 1123 1147 92 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 21 216 0 0 0 0 0 0
OW 0 35 4 21 13 0 0 0
VODI 0 12 9 24 7 0 0 0
ODI 0 9 0 18 10 2 0 0
CDI 2 3 1 21 87 47 0 0
VCDI 31 0 0 16 1147 1271 92 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 67 880 22 22 0 0 0 0
OW 4 168 110 61 0 0 0 0
VODI 1 0 16 454 90 0 0 0
ODI 0 0 0 54 1919 148 0 0
CDI 0 0 0 0 560 4732 0 0
VCDI 0 0 0 0 0 468 202 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 66 809 14 11 0 0 0 0
OW 5 210 93 122 5 0 0 0
VODI 1 28 33 334 102 0 0 0
ODI 0 1 8 112 719 76 0 0
CDI 0 0 0 12 1688 3308 0 0
VCDI 0 0 0 0 55 1964 202 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 0 597 9 2 0 0 0 0
OW 0 262 78 39 0 0 0 0
VODI 0 1 16 254 50 0 0 0
ODI 0 0 0 41 515 46 0 0
CDI 0 0 0 11 527 1461 0 0
VCDI 0 0 0 0 50 1694 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 536 8 6 0 0 0 0
OW 0 217 32 34 5 0 0 0
VODI 0 92 39 128 50 3 0 0
ODI 0 15 24 96 163 76 0 0
CDI 0 0 0 83 616 460 0 0
VCDI 0 0 0 0 308 2662 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 0 185 0 0 15 0 0 0
OW 0 119 25 41 46 0 0 0
VODI 0 15 9 272 168 1 0 0
ODI 0 0 1 283 1125 52 0 0
CDI 0 0 0 260 1378 1308 0 0
VCDI 0 0 0 1 918 1002 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 77 0 0 27 0 0 0
OW 0 184 1 28 78 0 0 0
VODI 0 40 22 101 216 2 0 0
ODI 0 12 6 130 347 26 0 0
CDI 0 6 6 470 1275 470 0 0
VCDI 0 0 0 128 1707 1865 0 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 0 781 72 66 0 0 0 0
OW 0 294 257 250 7 0 0 0
VODI 0 0 3 994 267 0 0 0
ODI 0 0 0 51 1675 20 0 0
CDI 0 0 0 2 85 470 0 0
VCDI 0 0 0 0 5 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 0 643 102 114 5 0 0 0
OW 0 388 138 237 48 0 0 0
VODI 0 44 91 726 489 0 0 0
ODI 0 0 1 271 842 0 0 0
CDI 0 0 0 15 649 490 0 0
VCDI 0 0 0 0 6 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 0 428 41 85 16 0 0 0
OW 0 482 210 93 16 0 0 0
VODI 0 3 41 1054 190 0 0 0
ODI 0 0 0 70 1146 130 0 0
CDI 0 0 0 4 553 1412 0 0
VCDI 0 0 0 0 27 316 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 243 33 73 16 0 0 0
OW 0 445 79 75 16 0 0 0
VODI 0 162 132 494 138 1 0 0
ODI 0 63 45 551 680 100 0 0
CDI 0 0 3 105 793 676 0 0
VCDI 0 0 0 8 305 1081 0 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 8761 2087 9 2 0 0 0 0
OW 0 380 35 10 0 0 0 0
VODI 0 4 13 21 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 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 8751 1823 5 2 0 0 0 0
OW 10 493 27 11 0 0 0 0
VODI 0 149 14 9 0 0 0 0
ODI 0 6 11 11 0 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 6604 2570 44 12 0 0 0 0
OW 0 238 105 97 2 0 0 0
VODI 0 2 22 453 136 1 0 0
ODI 0 0 0 55 612 72 0 0
CDI 0 0 0 0 290 315 58 0
VCDI 0 0 0 0 0 0 8 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6604 2499 51 20 0 0 0 0
OW 0 192 49 116 2 0 0 0
VODI 0 102 46 290 115 2 0 0
ODI 0 17 25 189 389 45 2 0
CDI 0 0 0 2 534 341 60 0
VCDI 0 0 0 0 0 0 4 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 8453 2993 63 22 0 0 0 0
OW 0 256 149 213 2 0 0 0
VODI 0 0 6 396 175 0 0 0
ODI 0 0 0 1 258 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 8453 2859 63 33 0 0 0 0
OW 0 362 122 272 7 0 0 0
VODI 0 28 33 324 244 0 0 0
ODI 0 0 0 3 184 0 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 14 1334 16 2 0 0 0 0
OW 0 471 179 77 0 0 0 0
VODI 0 9 23 554 74 0 0 0
ODI 0 0 0 66 1025 47 0 0
CDI 0 0 0 22 269 1557 28 0
VCDI 0 0 0 0 1 35 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14 1127 19 4 0 0 0 0
OW 0 489 75 71 1 0 0 0
VODI 0 175 89 230 29 0 0 0
ODI 0 23 35 307 491 37 0 0
CDI 0 0 0 106 837 1562 28 0
VCDI 0 0 0 3 11 40 0 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 2310 1958 9 3 3 0 0 0
OW 0 1036 151 126 15 0 0 0
VODI 0 34 28 958 235 1 0 0
ODI 0 0 0 105 844 155 0 0
CDI 0 0 0 1 162 404 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 2310 1741 7 2 12 0 0 0
OW 0 598 55 118 64 1 0 0
VODI 0 353 41 452 371 72 0 0
ODI 0 336 83 467 567 161 0 0
CDI 0 0 2 154 244 280 0 0
VCDI 0 0 0 0 1 46 0 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 11857 2944 38 22 0 0 0 0
OW 0 237 69 79 0 0 0 0
VODI 0 6 8 208 19 0 0 0
ODI 0 0 0 22 151 27 0 0
CDI 0 0 0 0 7 52 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 11857 2800 30 14 0 0 0 0
OW 0 358 57 103 0 0 0 0
VODI 0 28 24 170 41 0 0 0
ODI 0 1 4 44 122 42 0 0
CDI 0 0 0 0 14 37 0 0
VCDI 0 0 0 0 0 0 0 0


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