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

Validation of sea ice concentration - Full domain

Reference date: 2025-05-22

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-05-16:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71296 14009 459 627 10 0 0 0
OW 0 367 101 509 36 0 0 0
VODI 0 723 316 2353 889 40 9 0
ODI 0 603 343 2222 4831 1083 78 6
CDI 0 143 21 408 2931 9257 3841 112
VCDI 0 0 0 1 72 2938 36012 30393

Date: 2025-05-18:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71391 14159 529 789 19 0 0 0
OW 0 319 108 744 90 0 0 0
VODI 0 684 272 2483 849 44 1 0
ODI 0 647 309 2014 5413 1059 68 3
CDI 0 4 3 257 2577 9340 2852 181
VCDI 0 0 0 0 60 2598 32254 34919

Date: 2025-05-20:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71445 14418 532 1042 199 0 0 0
OW 0 369 146 762 113 0 0 0
VODI 0 599 378 2219 874 31 13 0
ODI 0 664 285 1878 5098 1417 193 21
CDI 0 1 4 344 2406 10368 2916 138
VCDI 0 0 0 0 22 3826 29946 34372

Date: 2025-05-22:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71836 14212 571 1201 53 0 0 0
OW 0 347 171 848 153 2 0 0
VODI 0 633 346 2243 881 73 10 0
ODI 0 624 266 1859 5525 1431 176 18
CDI 0 23 19 430 2493 10775 3343 312
VCDI 0 0 0 0 49 3362 27826 34928

Date: 2025-05-24:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 72705 14008 624 913 40 0 0 0
OW 0 334 212 692 138 3 0 0
VODI 0 713 425 2283 857 49 6 0
ODI 0 626 268 1921 6120 1161 73 0
CDI 0 47 38 407 2685 12031 3574 110
VCDI 0 0 0 0 30 3894 24905 35147

Date: 2025-05-26:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 74818 12945 538 708 7 0 0 0
OW 0 380 219 616 24 2 0 0
VODI 0 686 378 2353 805 92 6 0
ODI 0 577 230 1776 6114 1755 106 0
CDI 0 65 27 363 2511 12631 4538 90
VCDI 0 0 0 0 128 3239 31041 27271

Date: 2025-05-28:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 74967 13458 613 1078 56 0 0 0
OW 0 368 175 622 103 2 0 0
VODI 0 688 352 2060 919 61 0 0
ODI 0 623 311 1997 6023 1540 84 0
CDI 0 35 32 410 4687 11588 3885 26
VCDI 0 0 0 7 315 3008 27974 28972

Date: 2025-05-30:

Best estimate
...observations not yet available


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