Description of algorithm
Interpretation of results
Full domain
American sector
European sector
  Ice concntr, edge pos
  Contingency tables
Asian sector

Validation of sea ice concentration - European sector

Reference date: 2025-06-19

Model: GLO MFC - NEMO

Data source: OSI SAF N.H. sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2025-06-13:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77934 13383 319 495 57 0 0 0
OW 0 320 118 276 68 0 0 0
VODI 0 402 96 675 541 86 1 0
ODI 0 433 149 781 1382 884 283 0
CDI 0 5 6 25 187 1413 2850 0
VCDI 0 0 0 0 1 363 4511 1044

Date: 2025-06-15:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78387 13101 396 572 53 2 0 0
OW 0 271 55 357 67 0 0 0
VODI 0 472 136 670 595 72 8 0
ODI 0 394 122 783 1265 775 273 0
CDI 0 3 3 21 232 1215 2446 0
VCDI 0 0 0 0 8 165 3255 2914

Date: 2025-06-17:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78515 13386 374 537 29 2 0 0
OW 0 308 85 406 44 0 0 0
VODI 0 448 161 803 587 67 0 0
ODI 0 324 139 650 1095 673 133 0
CDI 0 3 0 18 238 1164 1806 0
VCDI 0 0 0 0 8 168 4118 2799

Date: 2025-06-19:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80102 12487 337 417 28 0 0 0
OW 0 367 94 355 64 2 0 0
VODI 0 382 143 735 580 77 5 0
ODI 0 304 123 501 916 639 201 0
CDI 0 3 9 43 231 820 1849 0
VCDI 0 0 1 10 32 181 4391 2659

Date: 2025-06-21:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79737 13143 443 480 44 1 0 0
OW 0 315 88 405 66 0 0 0
VODI 0 371 145 646 572 89 8 0
ODI 0 232 131 443 891 636 109 0
CDI 0 9 5 40 209 1335 1407 0
VCDI 0 0 0 2 34 124 4070 2858

Date: 2025-06-23:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80063 13319 436 409 41 0 0 0
OW 0 295 140 431 82 6 0 0
VODI 0 348 129 533 539 57 6 0
ODI 0 125 118 462 1013 543 75 0
CDI 0 11 13 34 248 1544 1071 0
VCDI 0 0 0 4 30 215 4203 2545

Date: 2025-06-25:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 81300 12645 416 437 24 0 0 0
OW 0 312 89 378 72 3 0 0
VODI 0 261 109 506 466 62 14 0
ODI 0 100 94 463 938 476 139 0
CDI 0 11 14 40 227 1342 1335 0
VCDI 0 0 0 0 12 1114 5600 89

Date: 2025-06-27:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 82010 12532 321 426 48 0 0 0
OW 0 315 98 236 53 2 0 0
VODI 0 257 94 483 531 80 10 0
ODI 0 112 103 412 995 506 172 0
CDI 0 13 7 46 364 1712 990 0
VCDI 0 0 0 0 7 1299 4032 822


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