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: 2024-06-20

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: 2024-06-24

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 33 2 0 0 0 0 0
OW 0 32 16 16 0 0 0 0
VODI 0 7 6 126 50 2 0 0
ODI 0 0 4 97 580 40 2 0
CDI 0 0 1 66 1198 7512 123 0
VCDI 0 0 0 0 0 16980 8808 1201
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 28 1 0 0 0 0 0
OW 0 12 6 6 2 0 0 0
VODI 0 6 8 32 46 7 0 0
ODI 0 8 1 57 173 120 14 0
CDI 0 18 13 200 1196 3446 637 24
VCDI 0 0 0 10 411 20961 8282 1177

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 144 75 4 0 0 0 0 0
OW 43 22 4 29 2 0 0 0
VODI 8 21 1 26 8 0 0 0
ODI 0 5 0 6 13 1 0 0
CDI 0 2 1 12 58 553 0 0
VCDI 0 0 0 19 1446 483 133 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 131 70 5 6 0 0 0 0
OW 43 18 3 19 4 0 0 0
VODI 19 7 1 31 7 0 0 0
ODI 2 6 0 3 14 0 0 0
CDI 0 24 1 10 44 203 0 0
VCDI 0 0 0 23 1458 834 133 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 179 652 9 25 0 0 0 0
OW 3 145 114 59 2 0 0 0
VODI 2 4 12 393 66 0 0 0
ODI 0 0 0 37 697 26 0 0
CDI 0 0 0 0 343 4919 77 0
VCDI 0 0 0 0 12 2083 119 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 174 584 20 30 0 0 0 0
OW 6 155 53 112 9 0 0 0
VODI 3 52 49 236 79 0 0 0
ODI 1 10 13 117 356 34 0 0
CDI 0 0 0 19 583 2659 77 0
VCDI 0 0 0 0 93 4335 119 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 0 322 1 0 0 0 0 0
OW 0 227 74 44 4 0 0 0
VODI 0 0 3 280 46 0 0 0
ODI 0 0 0 16 247 6 0 0
CDI 0 0 0 0 65 906 71 0
VCDI 0 0 0 0 0 1800 1541 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 276 7 1 0 0 0 0
OW 0 122 13 50 6 0 0 0
VODI 0 129 31 137 60 0 0 0
ODI 0 22 27 109 146 22 0 0
CDI 0 0 0 43 150 492 215 0
VCDI 0 0 0 0 0 2198 1397 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 30 0 0 17 5 0 0
OW 0 119 34 8 27 9 0 0
VODI 0 5 6 89 64 33 0 0
ODI 0 0 0 52 348 63 0 0
CDI 0 0 0 95 687 994 26 0
VCDI 0 0 0 22 1010 3415 66 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 18 0 0 19 17 0 0
OW 0 97 2 6 49 42 0 0
VODI 0 34 24 28 89 72 0 0
ODI 0 5 12 41 135 109 0 0
CDI 0 0 2 107 492 452 27 0
VCDI 0 0 0 84 1369 3827 65 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 0 416 23 16 22 0 0 0
OW 0 312 204 87 25 0 0 0
VODI 0 16 24 551 193 0 0 0
ODI 0 0 0 61 1774 97 0 0
CDI 0 0 0 3 237 1232 0 0
VCDI 0 0 0 0 0 6 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 318 19 17 19 0 0 0
OW 0 311 108 85 43 0 0 0
VODI 0 105 114 342 330 1 0 0
ODI 0 10 10 252 868 83 0 0
CDI 0 0 0 22 991 1074 0 0
VCDI 0 0 0 0 0 177 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 0 172 11 28 17 0 0 0
OW 0 291 107 79 4 0 0 0
VODI 0 31 32 581 65 0 0 0
ODI 0 5 0 79 1504 74 0 0
CDI 0 0 0 0 409 1688 66 0
VCDI 0 0 0 0 17 213 844 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 153 13 20 16 0 0 0
OW 0 186 70 117 10 0 0 0
VODI 0 113 48 364 60 1 0 0
ODI 0 15 15 209 766 112 5 0
CDI 0 32 4 57 1076 1066 141 0
VCDI 0 0 0 0 88 796 764 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 6415 3602 34 49 0 0 0 0
OW 0 517 152 91 1 0 0 0
VODI 0 23 9 263 28 0 0 0
ODI 0 0 0 9 129 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 6415 3192 35 56 0 0 0 0
OW 0 763 82 75 2 0 0 0
VODI 0 173 72 174 18 0 0 0
ODI 0 13 3 100 132 0 0 0
CDI 0 1 3 7 6 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 6772 2808 39 24 0 0 0 0
OW 0 87 117 116 0 0 0 0
VODI 0 0 2 295 51 0 0 0
ODI 0 0 0 23 371 17 0 0
CDI 0 0 0 0 383 335 30 0
VCDI 0 0 0 0 1 40 185 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6772 2778 66 52 0 0 0 0
OW 0 112 80 170 11 0 0 0
VODI 0 5 12 179 62 1 0 0
ODI 0 0 0 56 139 15 0 0
CDI 0 0 0 1 590 329 140 0
VCDI 0 0 0 0 4 47 75 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 8607 3005 32 17 0 0 0 0
OW 0 161 102 126 0 0 0 0
VODI 0 6 6 321 105 0 0 0
ODI 0 0 0 9 326 6 0 0
CDI 0 0 0 0 36 122 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 8607 2870 24 20 0 0 0 0
OW 0 276 70 118 17 0 0 0
VODI 0 26 46 305 220 0 0 0
ODI 0 0 0 30 182 27 0 0
CDI 0 0 0 0 48 101 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 13 848 7 1 0 0 0 0
OW 0 552 171 67 0 0 0 0
VODI 0 15 32 510 31 0 0 0
ODI 0 0 0 78 601 9 0 0
CDI 0 0 0 0 388 1661 130 0
VCDI 0 0 0 0 26 141 522 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 699 5 2 0 0 0 0
OW 0 508 87 68 0 0 0 0
VODI 0 183 81 246 14 0 0 0
ODI 0 25 35 237 158 2 0 0
CDI 0 0 2 103 813 1521 386 0
VCDI 0 0 0 0 61 288 266 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 1843 1728 2 6 0 1 0 0
OW 0 790 71 55 1 7 0 0
VODI 0 75 46 493 193 20 0 0
ODI 0 11 15 329 913 118 0 0
CDI 0 0 0 50 613 902 13 0
VCDI 0 0 0 0 13 82 148 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1843 1437 3 5 0 7 0 0
OW 0 552 29 93 18 24 0 0
VODI 0 355 28 175 236 75 0 0
ODI 0 218 40 284 253 424 1 0
CDI 0 21 14 258 1089 448 29 0
VCDI 0 21 20 118 137 152 131 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 10755 3664 87 110 12 0 0 0
OW 0 173 61 217 16 0 0 0
VODI 0 5 3 234 91 0 0 0
ODI 0 1 1 24 95 2 0 0
CDI 0 0 0 3 31 126 24 0
VCDI 0 0 0 0 0 0 11 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10755 3566 89 120 0 0 0 0
OW 0 260 59 302 54 0 0 0
VODI 0 15 4 129 96 0 0 0
ODI 0 2 0 32 44 1 0 0
CDI 0 0 0 5 51 127 33 0
VCDI 0 0 0 0 0 0 2 0


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