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: 2025-06-26

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: 2025-06-30

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 0 612 6 0 0 0 0 0
OW 0 272 44 18 1 1 0 0
VODI 0 79 49 133 39 10 0 0
ODI 0 13 30 140 135 39 1 7
CDI 0 0 5 278 607 2024 751 16
VCDI 0 0 0 6 475 11196 12962 6953
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 586 1 0 0 0 0 0
OW 0 274 29 9 1 1 0 0
VODI 0 99 68 146 36 8 0 0
ODI 0 17 30 141 177 39 0 7
CDI 0 0 6 274 583 2415 780 14
VCDI 0 0 0 5 460 10807 12934 6955

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 1 0 0 0 0 0 0
VODI 0 19 2 9 7 2 0 0
ODI 0 19 0 14 65 28 0 0
CDI 0 27 0 14 287 200 0 0
VCDI 0 0 0 0 783 1043 598 1
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 1 0 0 0 0 0 0
VODI 0 21 2 10 6 2 0 0
ODI 0 20 0 10 70 28 0 0
CDI 0 24 0 17 279 195 0 0
VCDI 0 0 0 0 787 1048 598 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 28 9 38 4 0 0 0
OW 0 11 2 80 17 4 0 0
VODI 0 7 3 104 36 31 0 0
ODI 0 0 3 69 186 72 0 0
CDI 0 0 0 34 545 2593 0 0
VCDI 0 0 0 0 130 5842 130 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 29 9 53 0 0 0 0
OW 0 12 2 73 10 1 0 0
VODI 0 5 2 100 45 29 0 0
ODI 0 0 4 63 201 86 0 0
CDI 0 0 0 36 468 2507 1 0
VCDI 0 0 0 0 194 5919 129 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 66 560 30 25 0 0 0 0
OW 0 336 30 94 10 0 0 0
VODI 0 75 66 190 179 0 0 0
ODI 0 25 19 158 670 172 0 0
CDI 0 0 0 5 733 1684 0 0
VCDI 0 0 0 0 240 286 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 66 529 28 23 0 0 0 0
OW 0 334 31 82 3 0 0 0
VODI 0 102 66 184 224 0 0 0
ODI 0 31 20 178 735 210 0 0
CDI 0 0 0 5 719 1641 0 0
VCDI 0 0 0 0 151 291 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 0 0 0 0 0 0 0
OW 0 23 14 13 1 0 0 0
VODI 0 9 17 146 23 2 0 0
ODI 0 0 4 139 729 398 0 0
CDI 0 0 0 0 1018 4338 170 0
VCDI 0 0 0 0 8 172 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 0 0 0 0 0 0 0
OW 0 25 7 6 1 0 0 0
VODI 0 7 23 137 20 4 0 0
ODI 0 0 5 155 826 418 0 0
CDI 0 0 0 0 931 4324 170 0
VCDI 0 0 0 0 1 164 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 0 518 23 45 4 0 0 0
OW 0 267 134 222 44 2 0 0
VODI 0 28 32 222 212 82 0 0
ODI 0 2 9 162 315 205 1 0
CDI 0 0 0 39 451 1071 230 0
VCDI 0 0 0 0 1 354 624 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 391 17 34 3 0 0 0
OW 0 380 128 192 16 1 0 0
VODI 0 44 44 262 240 92 0 0
ODI 0 0 9 160 377 206 1 0
CDI 0 0 0 42 390 1120 227 0
VCDI 0 0 0 0 1 295 627 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 630 2854 21 32 7 0 0 0
OW 0 870 116 71 12 0 0 0
VODI 0 137 75 220 76 1 0 0
ODI 0 8 11 119 231 65 8 0
CDI 0 0 1 30 394 296 20 0
VCDI 0 0 0 0 0 0 12 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 630 2698 22 29 9 0 0 0
OW 0 1012 112 59 7 0 0 0
VODI 0 155 84 245 77 3 0 0
ODI 0 4 6 122 254 79 9 0
CDI 0 0 0 17 373 279 17 0
VCDI 0 0 0 0 0 1 14 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 9094 1755 2 8 0 0 0 0
OW 0 170 58 73 0 0 0 0
VODI 0 0 1 115 45 0 0 0
ODI 0 0 0 0 1 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 9094 1780 1 8 0 0 0 0
OW 0 145 60 97 0 0 0 0
VODI 0 0 0 91 44 0 0 0
ODI 0 0 0 0 2 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 6806 2118 22 5 0 0 0 0
OW 0 311 87 71 2 0 0 0
VODI 0 29 57 326 91 0 0 0
ODI 0 0 0 147 507 47 0 0
CDI 0 0 0 13 356 456 153 0
VCDI 0 0 0 0 3 55 34 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6806 2094 19 4 0 0 0 0
OW 0 328 85 56 1 0 0 0
VODI 0 36 62 347 79 0 0 0
ODI 0 0 0 153 545 50 2 0
CDI 0 0 0 2 330 435 156 0
VCDI 0 0 0 0 4 73 29 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 10953 1502 0 0 0 0 0 0
OW 0 134 62 55 0 0 0 0
VODI 0 14 18 121 39 0 0 0
ODI 0 0 0 4 85 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 10953 1491 1 0 0 0 0 0
OW 0 144 65 71 0 0 0 0
VODI 0 15 14 106 51 0 0 0
ODI 0 0 0 3 71 0 0 0
CDI 0 0 0 0 2 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 271 2588 9 18 0 0 0 0
OW 0 730 61 46 7 6 0 0
VODI 0 172 33 130 17 6 0 0
ODI 0 34 42 109 58 15 0 0
CDI 0 0 6 129 402 441 0 0
VCDI 0 0 0 0 0 473 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 271 2507 8 15 0 0 0 0
OW 0 785 51 46 5 6 0 0
VODI 0 192 43 130 18 7 0 0
ODI 0 40 44 118 55 13 0 0
CDI 0 0 5 123 406 419 0 0
VCDI 0 0 0 0 0 496 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 1829 1753 4 7 11 0 0 0
OW 58 661 20 85 106 5 0 0
VODI 1 356 64 1270 323 15 4 0
ODI 0 32 10 925 282 50 15 0
CDI 0 5 2 274 113 151 30 0
VCDI 0 0 0 0 13 47 17 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1833 1724 6 3 1 0 0 0
OW 55 707 17 104 69 0 0 0
VODI 0 339 65 1210 373 17 3 0
ODI 0 32 10 1045 287 80 16 0
CDI 0 5 2 198 91 129 32 0
VCDI 0 0 0 1 27 42 15 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 12926 1334 8 0 0 0 0 0
OW 354 256 17 14 0 0 0 0
VODI 28 77 45 143 37 0 0 0
ODI 0 0 0 33 167 22 0 0
CDI 0 0 0 0 123 154 8 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 12941 1323 8 0 0 0 0 0
OW 343 269 9 11 0 0 0 0
VODI 24 75 53 146 35 0 0 0
ODI 0 0 0 33 186 37 0 0
CDI 0 0 0 0 106 139 8 0
VCDI 0 0 0 0 0 0 0 0


Generated by /metno/routine/sms/V3/SIconcentrationValidation5/SICmultiWebPage5GODAE.sh Fri Jul 4 02:36:49 UTC 2025 on arcval2

 
See Met Privacy