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: 2025-06-12

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-06-06:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77395 12374 396 449 3 0 0 0
OW 0 187 113 364 29 0 0 0
VODI 0 326 156 952 629 29 1 0
ODI 0 217 133 969 2790 996 245 0
CDI 0 0 0 2 448 3007 1752 0
VCDI 0 0 0 0 1 355 4262 509

Date: 2025-06-08:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78382 11714 380 519 7 0 0 0
OW 0 207 99 389 26 0 0 0
VODI 0 311 150 999 595 22 2 0
ODI 0 215 126 901 2618 845 133 0
CDI 0 0 0 6 288 2531 2068 0
VCDI 0 0 0 0 0 255 3963 1338

Date: 2025-06-10:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78928 11523 429 506 2 0 0 0
OW 0 145 90 453 20 0 0 0
VODI 0 298 101 990 622 22 0 0
ODI 0 187 125 909 2470 692 71 0
CDI 0 0 0 8 367 2586 1874 4
VCDI 0 0 0 0 0 85 1749 3833

Date: 2025-06-12:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77953 12904 428 540 0 0 0 0
OW 0 265 85 403 6 0 0 0
VODI 0 294 119 921 602 11 0 0
ODI 0 233 153 872 2019 713 91 0
CDI 0 1 0 21 228 1891 2531 0
VCDI 0 0 0 0 0 79 2224 3502

Date: 2025-06-14:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77963 13497 406 571 1 0 0 0
OW 0 239 62 406 16 0 0 0
VODI 0 315 116 798 594 7 0 0
ODI 0 211 132 912 1720 719 84 0
CDI 0 1 0 10 220 1466 2520 2
VCDI 0 0 0 0 0 138 2442 3521

Date: 2025-06-16:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80157 11609 379 453 1 0 0 0
OW 0 232 75 504 12 0 0 0
VODI 0 323 137 959 643 27 0 0
ODI 0 231 109 758 1617 511 48 0
CDI 0 0 0 3 243 1346 2024 1
VCDI 0 0 0 0 1 16 2401 4269

Date: 2025-06-18:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 81324 10920 389 437 8 0 0 0
OW 0 302 110 434 19 0 0 0
VODI 0 318 122 1095 455 9 0 0
ODI 0 147 108 686 1401 465 32 0
CDI 0 0 0 3 287 1288 1393 0
VCDI 0 0 0 0 7 200 3643 3487

Date: 2025-06-20:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 81190 11602 434 401 2 0 0 0
OW 0 312 96 471 11 0 0 0
VODI 0 254 116 982 462 20 0 0
ODI 0 150 115 628 1212 432 49 0
CDI 0 0 0 7 349 1365 1277 5
VCDI 0 0 0 0 11 182 3014 3940


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