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: 2024-05-09

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: 2024-05-13

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 1 0 0 0 0 0 0
OW 0 45 7 1 0 0 0 0
VODI 0 17 6 15 1 0 0 0
ODI 0 24 13 22 18 0 0 0
CDI 0 2 9 95 311 430 55 0
VCDI 0 0 0 26 87 542 8151 27024
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 13 4 2 0 0 0 0
VODI 0 16 5 8 0 0 0 0
ODI 0 14 2 9 9 0 0 0
CDI 0 43 14 38 175 175 46 0
VCDI 0 1 10 102 233 797 8160 27024

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 0 2 0 0 0
ODI 0 0 0 44 24 3 0 0
CDI 0 0 0 88 94 46 13 0
VCDI 0 0 0 14 12 129 942 1708
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 5 2 0 0
CDI 0 0 0 4 81 30 10 0
VCDI 0 0 0 142 46 146 945 1708

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 0 2 0 0 0
VODI 0 0 0 28 28 0 0 0
ODI 0 0 0 15 33 10 0 0
CDI 0 0 0 0 116 394 37 0
VCDI 0 0 0 0 11 639 5218 3447
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 3 0 0 0
VODI 0 0 0 15 13 0 2 0
ODI 0 0 0 13 20 10 1 0
CDI 0 0 0 15 82 181 67 1
VCDI 0 0 0 0 72 852 5185 3446

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 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 0 9 10 0 0
VCDI 0 0 0 0 92 356 2424 2762
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 0 0 0 64 18
VCDI 0 0 0 0 101 366 2360 2744

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 0 1 0 0
ODI 0 0 0 0 0 7 0 0
CDI 0 0 0 0 8 88 4 0
VCDI 0 0 0 0 5 158 2848 4105
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 2 0 0
ODI 0 0 0 0 0 10 0 0
CDI 0 0 0 0 0 80 72 0
VCDI 0 0 0 0 13 162 2780 4105

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 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 12 0
VCDI 0 0 0 0 95 169 2147 2876
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 0 0 0 22 2
VCDI 0 0 0 0 95 169 2137 2874

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 4 3 1 5 0
ODI 0 0 0 9 26 15 2 0
CDI 0 0 0 96 220 433 18 0
VCDI 0 0 0 49 410 762 4027 237
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 1 0
VODI 0 0 0 0 1 2 4 0
ODI 0 0 0 7 23 28 2 0
CDI 0 0 0 33 176 241 28 0
VCDI 0 0 0 118 459 940 4017 237

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3876 2557 1 12 0 0 0 0
OW 0 680 176 97 9 0 0 0
VODI 0 9 54 658 78 2 0 0
ODI 0 0 2 180 240 8 0 0
CDI 0 0 0 48 377 1088 15 0
VCDI 0 0 0 0 57 683 415 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3876 2285 1 13 1 0 0 0
OW 0 611 45 85 21 0 0 0
VODI 0 242 90 251 88 2 0 0
ODI 0 98 66 288 79 10 0 0
CDI 0 10 31 356 489 426 14 0
VCDI 0 0 0 2 83 1343 416 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 5235 2801 25 4 0 0 0 0
OW 0 254 138 93 2 0 0 0
VODI 0 0 7 322 63 0 0 0
ODI 0 0 0 35 447 45 0 0
CDI 0 0 0 0 357 1373 56 0
VCDI 0 0 0 0 0 101 338 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5235 2659 30 6 0 0 0 0
OW 0 320 56 65 12 0 0 0
VODI 0 73 77 211 37 8 0 0
ODI 0 3 7 165 243 95 5 0
CDI 0 0 0 7 575 1391 193 0
VCDI 0 0 0 0 2 25 196 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 7857 3063 32 17 0 0 0 0
OW 0 137 122 121 9 0 0 0
VODI 0 1 20 280 60 9 0 0
ODI 0 0 0 40 248 16 0 0
CDI 0 0 0 0 92 404 172 0
VCDI 0 0 0 0 0 9 278 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7857 3039 57 35 3 0 0 0
OW 0 148 79 169 46 4 0 0
VODI 0 13 36 197 92 25 3 0
ODI 0 1 2 57 181 45 10 0
CDI 0 0 0 0 87 364 437 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 0 194 0 0 0 0 0 0
OW 0 130 30 5 0 0 0 0
VODI 0 4 11 54 0 0 0 0
ODI 0 0 1 40 17 0 0 0
CDI 0 0 0 74 294 532 127 0
VCDI 0 0 0 32 117 524 3189 428
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 0 152 4 0 0 0 0 0
VODI 0 43 16 8 0 0 0 0
ODI 0 6 21 43 0 1 5 0
CDI 0 0 1 97 181 395 273 0
VCDI 0 0 0 57 247 660 3038 428

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 8 0 1 1 0 0 0
OW 0 162 28 62 10 0 0 0
VODI 0 44 28 184 51 6 0 0
ODI 0 31 20 298 216 29 0 0
CDI 0 0 0 104 971 616 31 0
VCDI 0 0 0 0 63 638 2968 1968
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 26 0 20 1 0 0 0
VODI 0 69 12 77 25 1 0 0
ODI 0 82 19 91 63 11 0 0
CDI 0 62 31 375 936 458 161 9
VCDI 0 4 14 86 287 819 2838 1959

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8551 3795 25 15 0 0 0 0
OW 0 268 112 99 7 1 0 0
VODI 0 23 36 465 136 14 0 0
ODI 0 1 1 143 682 60 0 0
CDI 0 0 0 12 424 534 54 0
VCDI 0 0 0 0 0 22 266 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8551 3563 23 9 0 0 0 0
OW 0 417 50 78 7 7 0 0
VODI 0 85 82 247 123 20 2 0
ODI 0 12 11 301 378 83 35 0
CDI 0 10 8 99 741 513 279 0
VCDI 0 0 0 0 0 8 4 0


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